NOAA Current Watches

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants in valleys. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...Until 5 PM MST /4 PM PST/ Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T18:38:00-07:00 2024-12-03T18:38:00-07:00 2024-12-03T18:38:00-07:00 2024-12-04T05:00:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Boise Mountains; Western Magic Valley; Camas Prairie; Upper Weiser River; Harney County; Baker County; Malheur County SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016015 SAME 016025 SAME 016039 SAME 016047 SAME 016053 SAME 016083 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ013 UGC IDZ016 UGC IDZ028 UGC IDZ033 UGC ORZ061 UGC ORZ062 UGC ORZ063 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 040138 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ SATURDAY IN VALLEYS BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/ eventEndingTime 2024-12-08T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.137dd67a70e90ab60864f344f0883c520d2dbb25.002.1,2024-12-02T16:53:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.00893a8d1350d5dc084db742860dcce192aa6747.002.1,2024-12-02T13:52:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e0b810ec120b58252cac3ed09726b1ae2c397903.002.1,2024-12-02T09:43:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.002.1,2024-12-01T16:59:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.002.1,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.002.1,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b682194244eca9ed2e55bfb5408b48e7999c9171.001.1,2024-11-30T13:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.002.1,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22e45d1ee25ac3ce7540badf1dd139731c51402c.001.1,2024-11-29T13:11:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97a2eca6896fedb585f0cf5edc06c1d06a005abf.001.1,2024-11-29T03:02:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09553975593c16f95b3d5f53d57211095f3a7f57.001.1,2024-11-28T14:15:00-07:00

* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. * WHERE...Lower Treasure Valley Zones. * WHEN...For the Air Stagnation Advisory, until 5 PM MST Saturday. For the Dense Fog Advisory, until 2 PM MST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Air Stagnation Advisory 2024-12-03T18:38:00-07:00 2024-12-03T18:38:00-07:00 2024-12-03T18:38:00-07:00 2024-12-04T05:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 041045 UGC IDZ012 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 040138 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY IN VALLEYS... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/ eventEndingTime 2024-12-08T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.137dd67a70e90ab60864f344f0883c520d2dbb25.001.2,2024-12-02T16:53:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.00893a8d1350d5dc084db742860dcce192aa6747.001.2,2024-12-02T13:52:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e0b810ec120b58252cac3ed09726b1ae2c397903.001.2,2024-12-02T09:43:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.001.2,2024-12-01T16:59:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.002.1,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.001.2,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.002.1,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.001.2,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b682194244eca9ed2e55bfb5408b48e7999c9171.001.1,2024-11-30T13:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.002.1,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.001.2,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22e45d1ee25ac3ce7540badf1dd139731c51402c.001.1,2024-11-29T13:11:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97a2eca6896fedb585f0cf5edc06c1d06a005abf.001.1,2024-11-29T03:02:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09553975593c16f95b3d5f53d57211095f3a7f57.001.1,2024-11-28T14:15:00-07:00

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Inner Vancouver Metro. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-04T05:15:00-08:00 Actual Update Met Expected Moderate Likely Inner Vancouver Metro SAME 053011 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 040108 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.003.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.004.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0c333b54942b118cdc389c0938db5f92bb04096f.003.1,2024-12-02T16:44:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e3349c783618c6f24a0dd39e6f0f2c9a3d089ae7.003.1,2024-12-02T10:54:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c5a9b8571cb63891b04476170c08430195c2b8f.004.1,2024-12-02T04:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.64670f7cd7a29a82370ee72b3e18ba136ad108c7.002.1,2024-12-01T12:18:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.026db90e026c23795575c98d4158372e73dfc7d8.004.1,2024-12-01T16:42:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1d6558ac1d50f13795a18801016639790d051bf7.003.1,2024-12-01T12:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.77418e60d6ce0d21f718d6a86125be67157f0a7a.002.1,2024-12-01T12:12:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.493f8fdb6b41823a887fea75ef3758f9ef8a3b0f.002.2,2024-12-01T11:53:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.624fe1f039f7ebb3460638180d38b0bcea8a9d1e.003.1,2024-12-01T09:34:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f4e7a2b84aa6253cd5f571b251e46b75c95ef583.003.2,2024-12-01T08:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a4b59ebc83676d657dbb3ed8640dcc6b78cb77d9.003.1,2024-12-01T01:32:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8381347e106b1488078e7582ed5b3a8c195fda71.002.2,2024-12-01T04:25:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8d466aec059dff30a12ed0dca40bb3ec59ce3b09.003.1,2024-11-30T21:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22f3aa05e658208dfe2e8e70be6a5574d7d1b26d.002.1,2024-11-30T11:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a9bb6c9a5459b3ed795a81a2bf55436fcc5cc522.002.1,2024-11-30T02:40:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e8845522ba47f474ec0646f92a0f74e443c0d763.002.1,2024-11-29T13:30:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9cf80f145cd192344dfbe23e6bf7120cf9c88766.002.1,2024-11-29T05:28:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6f37457e270fa55fa866b6aa22a4acd53ec81671.002.1,2024-11-28T14:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d28e420adcd0dbfde8d3dabe234299df3b403222.002.2,2024-11-28T08:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6cb7a31bb4f5d5534fb91a98d0c7a8ea3b1b1df8.003.1,2024-11-28T02:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d569cdb484c1d336d7f6b4a304e870456bb81e5e.002.1,2024-11-27T23:06:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.002.2,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.003.1,2024-11-27T20:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e687fb99ac77517c94d13096528e22603fa46c74.003.1,2024-11-27T16:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.002.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.004.1,2024-11-27T10:55:00-08:00

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Foothills of the Northern and Central Oregon Cascades, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-04T05:15:00-08:00 Actual Update Met Expected Moderate Likely North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; Lower Columbia River; Tualatin Valley; Outer Southeast Portland Metro; Clackamas County Cascade Foothills; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills; Willapa and Wahkiakum Lowlands; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills SAME 041057 SAME 041007 SAME 041041 SAME 041067 SAME 041071 SAME 041039 SAME 041003 SAME 041053 SAME 041009 SAME 041051 SAME 041005 SAME 041047 SAME 041043 SAME 053049 SAME 053069 SAME 053015 SAME 053011 SAME 053059 UGC ORZ104 UGC ORZ105 UGC ORZ108 UGC ORZ109 UGC ORZ113 UGC ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 040108 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.002.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.003.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0c333b54942b118cdc389c0938db5f92bb04096f.002.1,2024-12-02T16:44:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e3349c783618c6f24a0dd39e6f0f2c9a3d089ae7.002.1,2024-12-02T10:54:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c5a9b8571cb63891b04476170c08430195c2b8f.003.1,2024-12-02T04:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.64670f7cd7a29a82370ee72b3e18ba136ad108c7.001.1,2024-12-01T12:18:00-08:00 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w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e8845522ba47f474ec0646f92a0f74e443c0d763.002.1,2024-11-29T13:30:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e8845522ba47f474ec0646f92a0f74e443c0d763.001.1,2024-11-29T13:30:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9cf80f145cd192344dfbe23e6bf7120cf9c88766.002.1,2024-11-29T05:28:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9cf80f145cd192344dfbe23e6bf7120cf9c88766.001.1,2024-11-29T05:28:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6f37457e270fa55fa866b6aa22a4acd53ec81671.002.1,2024-11-28T14:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6f37457e270fa55fa866b6aa22a4acd53ec81671.001.1,2024-11-28T14:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d28e420adcd0dbfde8d3dabe234299df3b403222.004.1,2024-11-28T08:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d28e420adcd0dbfde8d3dabe234299df3b403222.002.2,2024-11-28T08:22:00-08:00 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w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.005.1,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.002.2,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.001.2,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.003.1,2024-11-27T20:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.002.1,2024-11-27T20:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e687fb99ac77517c94d13096528e22603fa46c74.003.1,2024-11-27T16:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e687fb99ac77517c94d13096528e22603fa46c74.002.1,2024-11-27T16:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.002.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.001.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.004.1,2024-11-27T10:55:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.003.1,2024-11-27T10:55:00-08:00

* WHAT...For the Freezing Fog Advisory, areas of fog and freezing fog, with visibility one quarter mile or less. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Central and Southern Willamette Valley. * WHEN...For the Freezing Fog Advisory, until noon PST Wednesday. For the Air Stagnation Advisory, until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Fog will be reforming this evening. Low visibility could make driving conditions hazardous. With freezing temperatures, moisture in the fog could freeze on bridges and overpasses, making slick and icy spots. Freezing Fog Advisory 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-04T05:15:00-08:00 Actual Alert Met Expected Moderate Likely West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041071 SAME 041053 SAME 041047 SAME 041005 SAME 041003 SAME 041043 SAME 041039 UGC ORZ114 UGC ORZ115 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 040108 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL NOON PST WEDNESDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KPQR.ZF.Y.0003.241204T0108Z-241204T2000Z/ eventEndingTime 2024-12-04T20:00:00+00:00

* WHAT...For the Freezing Fog Advisory, areas of fog and freezing fog, with visibility one quarter mile or less. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Central and Southern Willamette Valley. * WHEN...For the Freezing Fog Advisory, until noon PST Wednesday. For the Air Stagnation Advisory, until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Fog will be reforming this evening. Low visibility could make driving conditions hazardous. With freezing temperatures, moisture in the fog could freeze on bridges and overpasses, making slick and icy spots. Air Stagnation Advisory 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-04T05:15:00-08:00 Actual Update Met Expected Moderate Likely West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041071 SAME 041053 SAME 041047 SAME 041005 SAME 041003 SAME 041043 SAME 041039 UGC ORZ114 UGC ORZ115 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 040108 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL NOON PST WEDNESDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.001.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.002.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.001.2,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0c333b54942b118cdc389c0938db5f92bb04096f.002.1,2024-12-02T16:44:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0c333b54942b118cdc389c0938db5f92bb04096f.001.2,2024-12-02T16:44:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e3349c783618c6f24a0dd39e6f0f2c9a3d089ae7.001.2,2024-12-02T10:54:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c5a9b8571cb63891b04476170c08430195c2b8f.002.1,2024-12-02T04:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c5a9b8571cb63891b04476170c08430195c2b8f.001.1,2024-12-02T04:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.64670f7cd7a29a82370ee72b3e18ba136ad108c7.001.1,2024-12-01T12:18:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.026db90e026c23795575c98d4158372e73dfc7d8.001.2,2024-12-01T16:42:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.026db90e026c23795575c98d4158372e73dfc7d8.002.2,2024-12-01T16:42:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1d6558ac1d50f13795a18801016639790d051bf7.002.1,2024-12-01T12:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.77418e60d6ce0d21f718d6a86125be67157f0a7a.001.1,2024-12-01T12:12:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.493f8fdb6b41823a887fea75ef3758f9ef8a3b0f.003.2,2024-12-01T11:53:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.493f8fdb6b41823a887fea75ef3758f9ef8a3b0f.001.2,2024-12-01T11:53:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.624fe1f039f7ebb3460638180d38b0bcea8a9d1e.005.1,2024-12-01T09:34:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.624fe1f039f7ebb3460638180d38b0bcea8a9d1e.004.1,2024-12-01T09:34:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f4e7a2b84aa6253cd5f571b251e46b75c95ef583.004.2,2024-12-01T08:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f4e7a2b84aa6253cd5f571b251e46b75c95ef583.001.2,2024-12-01T08:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a4b59ebc83676d657dbb3ed8640dcc6b78cb77d9.002.1,2024-12-01T01:32:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a4b59ebc83676d657dbb3ed8640dcc6b78cb77d9.001.2,2024-12-01T01:32:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8381347e106b1488078e7582ed5b3a8c195fda71.004.1,2024-12-01T04:25:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8381347e106b1488078e7582ed5b3a8c195fda71.003.1,2024-12-01T04:25:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8d466aec059dff30a12ed0dca40bb3ec59ce3b09.002.1,2024-11-30T21:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22f3aa05e658208dfe2e8e70be6a5574d7d1b26d.001.1,2024-11-30T11:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a9bb6c9a5459b3ed795a81a2bf55436fcc5cc522.001.1,2024-11-30T02:40:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e8845522ba47f474ec0646f92a0f74e443c0d763.001.1,2024-11-29T13:30:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9cf80f145cd192344dfbe23e6bf7120cf9c88766.001.1,2024-11-29T05:28:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6f37457e270fa55fa866b6aa22a4acd53ec81671.001.1,2024-11-28T14:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d28e420adcd0dbfde8d3dabe234299df3b403222.004.1,2024-11-28T08:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d28e420adcd0dbfde8d3dabe234299df3b403222.003.1,2024-11-28T08:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6cb7a31bb4f5d5534fb91a98d0c7a8ea3b1b1df8.004.1,2024-11-28T02:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6cb7a31bb4f5d5534fb91a98d0c7a8ea3b1b1df8.001.2,2024-11-28T02:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d569cdb484c1d336d7f6b4a304e870456bb81e5e.003.1,2024-11-27T23:06:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d569cdb484c1d336d7f6b4a304e870456bb81e5e.001.1,2024-11-27T23:06:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.003.2,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.001.2,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.002.1,2024-11-27T20:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.001.2,2024-11-27T20:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e687fb99ac77517c94d13096528e22603fa46c74.002.1,2024-11-27T16:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e687fb99ac77517c94d13096528e22603fa46c74.001.1,2024-11-27T16:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.001.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.003.1,2024-11-27T10:55:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.001.2,2024-11-27T10:55:00-08:00

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Foothills of the Northern and Central Oregon Cascades, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-03T17:08:00-08:00 2024-12-04T05:15:00-08:00 Actual Update Met Expected Moderate Likely North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; Lower Columbia River; Tualatin Valley; Outer Southeast Portland Metro; Clackamas County Cascade Foothills; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills; Willapa and Wahkiakum Lowlands; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills SAME 041057 SAME 041007 SAME 041041 SAME 041067 SAME 041071 SAME 041039 SAME 041003 SAME 041053 SAME 041009 SAME 041051 SAME 041005 SAME 041047 SAME 041043 SAME 053049 SAME 053069 SAME 053015 SAME 053011 SAME 053059 UGC ORZ104 UGC ORZ105 UGC ORZ108 UGC ORZ109 UGC ORZ113 UGC ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 040108 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.002.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.003.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0c333b54942b118cdc389c0938db5f92bb04096f.002.1,2024-12-02T16:44:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e3349c783618c6f24a0dd39e6f0f2c9a3d089ae7.002.1,2024-12-02T10:54:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c5a9b8571cb63891b04476170c08430195c2b8f.003.1,2024-12-02T04:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.64670f7cd7a29a82370ee72b3e18ba136ad108c7.001.1,2024-12-01T12:18:00-08:00 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* WHAT...A ridge of high pressure will lead to a strong inversion and stagnant air conditions near the surface that will continue to trap pollutants. This could worsen air quality over time. * WHERE...Valley locations across southern Oregon. West of the Cascades, this includes the Umpqua, Illinois, Applegate, and Rogue valleys. East of the Cascades, this includes Klamath Falls, Sprague River, Chiloquin, Chemult, Silver Lake, Paisley, and surrounding areas. * WHEN...For the Cold Weather Advisory, from 2 AM to 8 AM PST Monday. For the Air Stagnation Advisory, until 4 PM PST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. Watch for icy spots on roads. Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T14:42:00-08:00 2024-12-03T14:42:00-08:00 2024-12-03T14:42:00-08:00 2024-12-05T16:00:00-08:00 Actual Update Met Expected Moderate Likely Central Douglas County; Eastern Curry County and Josephine County; Jackson County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County SAME 041011 SAME 041019 SAME 041015 SAME 041033 SAME 041029 SAME 041035 SAME 041037 UGC ORZ023 UGC ORZ024 UGC ORZ026 UGC ORZ029 UGC ORZ030 UGC ORZ031 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 032242 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 PM PST FRIDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KMFR.AS.Y.0001.000000T0000Z-241207T0000Z/ eventEndingTime 2024-12-07T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.af2a9b42ca4dee7543a70a28ae872c71acae3811.002.1,2024-12-02T15:55:00-08:00 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w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5171f89497824428498eb599eb9bbd38382e6e34.004.1,2024-11-30T11:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5171f89497824428498eb599eb9bbd38382e6e34.002.1,2024-11-30T11:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5171f89497824428498eb599eb9bbd38382e6e34.001.2,2024-11-30T11:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c84c69385c8103e5fa73f3d691ad7267280237e.006.1,2024-11-30T08:43:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c84c69385c8103e5fa73f3d691ad7267280237e.005.1,2024-11-30T08:43:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c84c69385c8103e5fa73f3d691ad7267280237e.003.2,2024-11-30T08:43:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f7d7d33cb17a109bd488a03f9a3e62e0f0891846.003.1,2024-11-30T02:20:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f7d7d33cb17a109bd488a03f9a3e62e0f0891846.002.1,2024-11-30T02:20:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ef9754d3d12c82b4d679466bc6e5fdb06db145ac.006.1,2024-11-30T04:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ef9754d3d12c82b4d679466bc6e5fdb06db145ac.004.1,2024-11-30T04:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ef9754d3d12c82b4d679466bc6e5fdb06db145ac.002.2,2024-11-30T04:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d1f751a2b105f0732c5577dcd3952429b725f294.004.1,2024-11-30T03:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d1f751a2b105f0732c5577dcd3952429b725f294.003.1,2024-11-30T03:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0bb3a3f5dde75e6ef2bdf0bfee30ecea1beccfe2.003.1,2024-11-29T16:53:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0bb3a3f5dde75e6ef2bdf0bfee30ecea1beccfe2.002.2,2024-11-29T16:53:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1294077ece7e9110efc8f73ea2f811f86b3cbe7a.002.1,2024-11-29T15:46:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8ffaac7b62e66d2438403040cf7777c71172f13d.002.1,2024-11-29T13:56:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.bfa3fc0616eaf09d7197914df2de629fbb5ee08c.002.1,2024-11-29T10:55:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.bfa3fc0616eaf09d7197914df2de629fbb5ee08c.001.1,2024-11-29T10:55:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ef8a64c86a80a2b12d9634eb097a5c6094212aaa.001.1,2024-11-29T11:15:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c817e3c495f6f15fef7bfa33ce72f6c90c36fd8.002.1,2024-11-29T09:09:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.51e4ae1fd4e4763c756cf250b06303fd21dd1332.002.1,2024-11-29T02:09:00-08:00

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Lower Treasure Valley Zones. * WHEN...For the Dense Fog Advisory, until 2 PM MST Thursday. For the Air Stagnation Advisory, until 5 PM MST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-03T13:48:00-07:00 2024-12-03T13:48:00-07:00 2024-12-03T13:48:00-07:00 2024-12-04T07:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 041045 UGC IDZ012 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 032048 NWSheadline DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM MST THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY IN VALLEYS BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KBOI.FG.Y.0015.000000T0000Z-241205T2100Z/ eventEndingTime 2024-12-05T21:00:00+00:00

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Lower Treasure Valley Zones. * WHEN...For the Dense Fog Advisory, until 2 PM MST Thursday. For the Air Stagnation Advisory, until 5 PM MST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Air Stagnation Advisory 2024-12-03T13:48:00-07:00 2024-12-03T13:48:00-07:00 2024-12-03T13:48:00-07:00 2024-12-04T07:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 041045 UGC IDZ012 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 032048 NWSheadline DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM MST THURSDAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY IN VALLEYS BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/ eventEndingTime 2024-12-08T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e0b810ec120b58252cac3ed09726b1ae2c397903.001.2,2024-12-02T09:43:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.001.2,2024-12-01T16:59:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.002.1,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.001.2,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.002.1,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.001.2,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b682194244eca9ed2e55bfb5408b48e7999c9171.001.1,2024-11-30T13:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.002.1,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.001.2,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22e45d1ee25ac3ce7540badf1dd139731c51402c.001.1,2024-11-29T13:11:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97a2eca6896fedb585f0cf5edc06c1d06a005abf.001.1,2024-11-29T03:02:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09553975593c16f95b3d5f53d57211095f3a7f57.001.1,2024-11-28T14:15:00-07:00

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants in valleys. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...Until 5 PM MST /4 PM PST/ Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T13:48:00-07:00 2024-12-03T13:48:00-07:00 2024-12-03T13:48:00-07:00 2024-12-04T07:00:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Boise Mountains; Upper Treasure Valley; Western Magic Valley; Camas Prairie; Upper Weiser River; Harney County; Baker County; Malheur County SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016015 SAME 016025 SAME 016039 SAME 016001 SAME 016073 SAME 016047 SAME 016053 SAME 016083 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ013 UGC IDZ014 UGC IDZ016 UGC IDZ028 UGC IDZ033 UGC ORZ061 UGC ORZ062 UGC ORZ063 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 032048 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ SATURDAY IN VALLEYS BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/ eventEndingTime 2024-12-08T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e0b810ec120b58252cac3ed09726b1ae2c397903.002.1,2024-12-02T09:43:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.002.1,2024-12-01T16:59:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.002.1,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.002.1,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b682194244eca9ed2e55bfb5408b48e7999c9171.001.1,2024-11-30T13:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.002.1,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22e45d1ee25ac3ce7540badf1dd139731c51402c.001.1,2024-11-29T13:11:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97a2eca6896fedb585f0cf5edc06c1d06a005abf.001.1,2024-11-29T03:02:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09553975593c16f95b3d5f53d57211095f3a7f57.001.1,2024-11-28T14:15:00-07:00

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Inner Vancouver Metro. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T11:41:00-08:00 2024-12-03T11:41:00-08:00 2024-12-03T11:41:00-08:00 2024-12-04T04:00:00-08:00 Actual Alert Met Expected Moderate Likely Inner Vancouver Metro SAME 053011 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 031941 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.003.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.004.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0c333b54942b118cdc389c0938db5f92bb04096f.003.1,2024-12-02T16:44:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e3349c783618c6f24a0dd39e6f0f2c9a3d089ae7.003.1,2024-12-02T10:54:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.4c5a9b8571cb63891b04476170c08430195c2b8f.004.1,2024-12-02T04:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.64670f7cd7a29a82370ee72b3e18ba136ad108c7.002.1,2024-12-01T12:18:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.026db90e026c23795575c98d4158372e73dfc7d8.004.1,2024-12-01T16:42:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1d6558ac1d50f13795a18801016639790d051bf7.003.1,2024-12-01T12:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.77418e60d6ce0d21f718d6a86125be67157f0a7a.002.1,2024-12-01T12:12:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.493f8fdb6b41823a887fea75ef3758f9ef8a3b0f.002.2,2024-12-01T11:53:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.624fe1f039f7ebb3460638180d38b0bcea8a9d1e.003.1,2024-12-01T09:34:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f4e7a2b84aa6253cd5f571b251e46b75c95ef583.003.2,2024-12-01T08:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a4b59ebc83676d657dbb3ed8640dcc6b78cb77d9.003.1,2024-12-01T01:32:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8381347e106b1488078e7582ed5b3a8c195fda71.002.2,2024-12-01T04:25:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8d466aec059dff30a12ed0dca40bb3ec59ce3b09.003.1,2024-11-30T21:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22f3aa05e658208dfe2e8e70be6a5574d7d1b26d.002.1,2024-11-30T11:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a9bb6c9a5459b3ed795a81a2bf55436fcc5cc522.002.1,2024-11-30T02:40:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e8845522ba47f474ec0646f92a0f74e443c0d763.002.1,2024-11-29T13:30:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9cf80f145cd192344dfbe23e6bf7120cf9c88766.002.1,2024-11-29T05:28:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6f37457e270fa55fa866b6aa22a4acd53ec81671.002.1,2024-11-28T14:49:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d28e420adcd0dbfde8d3dabe234299df3b403222.002.2,2024-11-28T08:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.6cb7a31bb4f5d5534fb91a98d0c7a8ea3b1b1df8.003.1,2024-11-28T02:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d569cdb484c1d336d7f6b4a304e870456bb81e5e.002.1,2024-11-27T23:06:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.96deae15aa4df7130d51bb4d78fc4ae640c25d6b.002.2,2024-11-27T22:57:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.003.1,2024-11-27T20:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e687fb99ac77517c94d13096528e22603fa46c74.003.1,2024-11-27T16:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.002.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.004.1,2024-11-27T10:55:00-08:00

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Central and Southern Willamette Valley, Foothills of the Northern and Central Oregon Cascades, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T11:41:00-08:00 2024-12-03T11:41:00-08:00 2024-12-03T11:41:00-08:00 2024-12-04T04:00:00-08:00 Actual Alert Met Expected Moderate Likely North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; Lower Columbia River; Tualatin Valley; Outer Southeast Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; Clackamas County Cascade Foothills; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills; Willapa and Wahkiakum Lowlands; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills SAME 041057 SAME 041007 SAME 041041 SAME 041067 SAME 041071 SAME 041039 SAME 041003 SAME 041053 SAME 041009 SAME 041051 SAME 041005 SAME 041047 SAME 041043 SAME 053049 SAME 053069 SAME 053015 SAME 053011 SAME 053059 UGC ORZ104 UGC ORZ105 UGC ORZ108 UGC ORZ109 UGC ORZ113 UGC ORZ114 UGC ORZ115 UGC ORZ116 UGC ORZ117 UGC ORZ118 UGC ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 031941 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.002.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.001.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.003.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.002.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.001.2,2024-12-02T20:14:00-08:00 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* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Central and Southern Willamette Valley, Foothills of the Northern and Central Oregon Cascades, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T11:41:00-08:00 2024-12-03T11:41:00-08:00 2024-12-03T11:41:00-08:00 2024-12-04T04:00:00-08:00 Actual Alert Met Expected Moderate Likely North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; Lower Columbia River; Tualatin Valley; Outer Southeast Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; Clackamas County Cascade Foothills; Cascade Foothills of Marion and Linn Counties; Lane County Cascade Foothills; Willapa and Wahkiakum Lowlands; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills SAME 041057 SAME 041007 SAME 041041 SAME 041067 SAME 041071 SAME 041039 SAME 041003 SAME 041053 SAME 041009 SAME 041051 SAME 041005 SAME 041047 SAME 041043 SAME 053049 SAME 053069 SAME 053015 SAME 053011 SAME 053059 UGC ORZ104 UGC ORZ105 UGC ORZ108 UGC ORZ109 UGC ORZ113 UGC ORZ114 UGC ORZ115 UGC ORZ116 UGC ORZ117 UGC ORZ118 UGC ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 031941 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241205T1200Z/ eventEndingTime 2024-12-05T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.002.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ff526f5c84320257eef539769e436012fd7e09fc.001.1,2024-12-03T04:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.003.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.002.1,2024-12-02T20:14:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.34062e9bf0afc33feba171ea0c13ffa36d53444b.001.2,2024-12-02T20:14:00-08:00 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* WHAT...Visibility less than one mile in freezing fog. * WHERE...Foothills of the Southern Blue Mountains of Oregon and North Central Oregon. * WHEN...Until 11 AM PST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing Fog Advisory 2024-12-03T10:40:00-08:00 2024-12-03T10:40:00-08:00 2024-12-03T10:40:00-08:00 2024-12-03T23:00:00-08:00 Actual Update Met Expected Moderate Likely Foothills of the Southern Blue Mountains of Oregon; North Central Oregon SAME 041021 SAME 041049 SAME 041069 SAME 041055 SAME 041065 UGC ORZ508 UGC ORZ510 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 031840 NWSheadline FREEZING FOG ADVISORY NOW IN EFFECT UNTIL 11 AM PST WEDNESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KPDT.ZF.Y.0011.000000T0000Z-241204T1900Z/ eventEndingTime 2024-12-04T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e89c8c37ba7d46e2a8913729592d5b419620c629.002.1,2024-12-02T18:45:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0f3bb079d5947ebd4045a17477176654e18b62c8.001.1,2024-12-02T14:58:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d23cdfaa9d504be16f7a9fb95153acf5ef3ea68f.002.1,2024-12-02T11:17:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.03fb3b3384950c963a924be4006cb6d3c7ed404d.001.1,2024-12-02T10:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8e2c44abacb066283238496064351fdfa6542cf4.002.1,2024-12-02T10:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e41197bcddc488e7bd6dafb3de9735020cfe77ae.001.1,2024-12-02T04:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f3862b1d282acb9c0f8d1eb6633119423fc4e11e.001.1,2024-12-01T17:11:00-08:00

* WHAT...Visibility less than one mile in freezing fog. * WHERE...Central Oregon. * WHEN...Until 11 AM PST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibilities are expected to improve in parts of central Oregon this afternoon, before fog redevelops this evening. Freezing Fog Advisory 2024-12-03T10:40:00-08:00 2024-12-03T10:40:00-08:00 2024-12-03T10:40:00-08:00 2024-12-03T23:00:00-08:00 Actual Update Met Expected Moderate Likely Central Oregon SAME 041013 SAME 041017 SAME 041031 UGC ORZ511 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 031840 NWSheadline FREEZING FOG ADVISORY NOW IN EFFECT UNTIL 11 AM PST WEDNESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KPDT.ZF.Y.0011.000000T0000Z-241204T1900Z/ eventEndingTime 2024-12-04T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e89c8c37ba7d46e2a8913729592d5b419620c629.001.1,2024-12-02T18:45:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e41197bcddc488e7bd6dafb3de9735020cfe77ae.001.1,2024-12-02T04:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8e2c44abacb066283238496064351fdfa6542cf4.001.1,2024-12-02T10:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f3862b1d282acb9c0f8d1eb6633119423fc4e11e.001.1,2024-12-01T17:11:00-08:00

* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility one quarter to one half mile in dense fog. * WHERE...Lower Treasure Valley Zones. * WHEN...For the Air Stagnation Advisory, until 5 PM MST Saturday. For the Dense Fog Advisory, until 2 PM MST this afternoon. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-03T10:39:00-07:00 2024-12-03T10:39:00-07:00 2024-12-03T10:39:00-07:00 2024-12-04T15:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 041045 UGC IDZ012 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 031739 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 5 PM MST SATURDAY IN VALLEYS... ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM MST THIS AFTERNOON BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KBOI.FG.Y.0015.000000T0000Z-241203T2100Z/ eventEndingTime 2024-12-03T21:00:00+00:00

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants in valleys. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...Until 5 PM MST /4 PM PST/ Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T10:39:00-07:00 2024-12-03T10:39:00-07:00 2024-12-03T10:39:00-07:00 2024-12-04T15:00:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Boise Mountains; Western Magic Valley; Camas Prairie; Upper Weiser River; Harney County; Baker County; Malheur County SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016015 SAME 016025 SAME 016039 SAME 016047 SAME 016053 SAME 016083 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ013 UGC IDZ016 UGC IDZ028 UGC IDZ033 UGC ORZ061 UGC ORZ062 UGC ORZ063 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 031739 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 5 PM MST /4 PM PST/ SATURDAY IN VALLEYS BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/ eventEndingTime 2024-12-08T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e0b810ec120b58252cac3ed09726b1ae2c397903.002.1,2024-12-02T09:43:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.002.1,2024-12-01T16:59:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.002.1,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.002.1,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b682194244eca9ed2e55bfb5408b48e7999c9171.001.1,2024-11-30T13:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.002.1,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22e45d1ee25ac3ce7540badf1dd139731c51402c.001.1,2024-11-29T13:11:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97a2eca6896fedb585f0cf5edc06c1d06a005abf.001.1,2024-11-29T03:02:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09553975593c16f95b3d5f53d57211095f3a7f57.001.1,2024-11-28T14:15:00-07:00

* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility one quarter to one half mile in dense fog. * WHERE...Lower Treasure Valley Zones. * WHEN...For the Air Stagnation Advisory, until 5 PM MST Saturday. For the Dense Fog Advisory, until 2 PM MST this afternoon. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Air Stagnation Advisory 2024-12-03T10:39:00-07:00 2024-12-03T10:39:00-07:00 2024-12-03T10:39:00-07:00 2024-12-04T15:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 041045 UGC IDZ012 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 031739 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 5 PM MST SATURDAY IN VALLEYS... ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM MST THIS AFTERNOON BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/ eventEndingTime 2024-12-08T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e0b810ec120b58252cac3ed09726b1ae2c397903.001.2,2024-12-02T09:43:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.001.2,2024-12-01T16:59:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.002.1,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c91b3dc6d064093173e972c6c3c0a4a327405830.001.2,2024-12-01T13:51:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.002.1,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.54b7727f1bac15e9971216b3730ed18b1095c616.001.2,2024-12-01T11:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b682194244eca9ed2e55bfb5408b48e7999c9171.001.1,2024-11-30T13:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.002.1,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09939f1f9e601772fbcf0bbf9bfe328716a453c4.001.2,2024-12-01T08:01:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.22e45d1ee25ac3ce7540badf1dd139731c51402c.001.1,2024-11-29T13:11:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97a2eca6896fedb585f0cf5edc06c1d06a005abf.001.1,2024-11-29T03:02:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.09553975593c16f95b3d5f53d57211095f3a7f57.001.1,2024-11-28T14:15:00-07:00

* WHAT...Visibility less than one quarter mile in freezing fog. * WHERE...Foothills of the Southern Blue Mountains of Oregon and North Central Oregon. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility and slick roadways will make driving conditions hazardous. Freezing Fog Advisory 2024-12-03T04:59:00-08:00 2024-12-03T04:59:00-08:00 2024-12-03T04:59:00-08:00 2024-12-03T11:00:00-08:00 Actual Update Met Expected Moderate Likely Foothills of the Southern Blue Mountains of Oregon; North Central Oregon SAME 041021 SAME 041049 SAME 041069 SAME 041055 SAME 041065 UGC ORZ508 UGC ORZ510 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 031259 NWSheadline FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPDT.ZF.Y.0011.000000T0000Z-241203T1900Z/ eventEndingTime 2024-12-03T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0f3bb079d5947ebd4045a17477176654e18b62c8.001.1,2024-12-02T14:58:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d23cdfaa9d504be16f7a9fb95153acf5ef3ea68f.002.1,2024-12-02T11:17:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.03fb3b3384950c963a924be4006cb6d3c7ed404d.001.1,2024-12-02T10:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8e2c44abacb066283238496064351fdfa6542cf4.002.1,2024-12-02T10:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.e41197bcddc488e7bd6dafb3de9735020cfe77ae.001.1,2024-12-02T04:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f3862b1d282acb9c0f8d1eb6633119423fc4e11e.001.1,2024-12-01T17:11:00-08:00