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 2024-12-04T09:16:00-07:00 2024-12-04T09:16:00-07:00 2024-12-04T09:16:00-07:00 2024-12-05T15:15:00-07:00 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 041616 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:2.49.0.1.840.0.77ecdddf9b7e8d195b7d677e5161864d61b6d4e3.002.1,2024-12-03T13:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ccbcca6cdef8951c8fc2da27f575719998bb9c0c.003.1,2024-12-03T18:38:00-07:00 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 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...Treasure Valley Zones. * WHEN...For the Dense Fog Advisory, until 2 PM MST Friday. 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. * ADDITIONAL DETAILS...Fog could produce patchy black icy for slick roads. Air Stagnation Advisory 2024-12-04T09:16:00-07:00 2024-12-04T09:16:00-07:00 2024-12-04T09:16:00-07:00 2024-12-05T15:15:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Upper Treasure Valley; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 016001 SAME 016039 SAME 041045 UGC IDZ012 UGC IDZ014 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 041616 NWSheadline DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM MST FRIDAY... ...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:2.49.0.1.840.0.77ecdddf9b7e8d195b7d677e5161864d61b6d4e3.002.1,2024-12-03T13:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.77ecdddf9b7e8d195b7d677e5161864d61b6d4e3.001.2,2024-12-03T13:48:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ccbcca6cdef8951c8fc2da27f575719998bb9c0c.002.1,2024-12-03T18:38:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ccbcca6cdef8951c8fc2da27f575719998bb9c0c.001.2,2024-12-03T18:38:00-07:00 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:2.49.0.1.840.0.00893a8d1350d5dc084db742860dcce192aa6747.002.1,2024-12-02T13:52:00-07:00 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.e0b810ec120b58252cac3ed09726b1ae2c397903.002.1,2024-12-02T09:43:00-07:00 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:2.49.0.1.840.0.2c6f04f53508d11ae9c4b107f0c3937b3c52e6a7.002.1,2024-12-01T16:59:00-07:00 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 of a mile in freezing fog. * WHERE...John Day Basin. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility and slick roads could make driving conditions hazardous. Freezing Fog Advisory 2024-12-04T06:03:00-08:00 2024-12-04T06:03:00-08:00 2024-12-04T06:03:00-08:00 2024-12-04T11:00:00-08:00 Actual Update Met Expected Moderate Likely John Day Basin SAME 041023 SAME 041031 SAME 041049 SAME 041065 SAME 041069 UGC ORZ505 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 041403 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-241204T1900Z/ eventEndingTime 2024-12-04T19:00:00+00:00

* 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 roads could make driving conditions hazardous. Freezing Fog Advisory 2024-12-04T06:03:00-08:00 2024-12-04T06:03:00-08:00 2024-12-04T06:03:00-08:00 2024-12-04T11:00:00-08:00 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 041403 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-241204T1900Z/ eventEndingTime 2024-12-04T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a090c3c8787c7d30d01ee9c14c265d9d8b504451.001.1,2024-12-03T10:40:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.bfcf16f50050d6e90a88e7c5da5f88e5e8aa1429.001.1,2024-12-03T04:59:00-08:00 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 quarter of a mile in freezing fog. * WHERE...Central Oregon. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility and slick roads could make driving conditions hazardous. Freezing Fog Advisory 2024-12-04T06:03:00-08:00 2024-12-04T06:03:00-08:00 2024-12-04T06:03:00-08:00 2024-12-04T11:00:00-08:00 Actual Update Met Expected Moderate Likely Central Oregon SAME 041013 SAME 041017 SAME 041031 UGC ORZ511 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 041403 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-241204T1900Z/ eventEndingTime 2024-12-04T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.a090c3c8787c7d30d01ee9c14c265d9d8b504451.002.1,2024-12-03T10:40:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.bfcf16f50050d6e90a88e7c5da5f88e5e8aa1429.002.1,2024-12-03T04:59:00-08:00 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...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...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T12:15:00-08:00 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 041036 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:2.49.0.1.840.0.8381347e106b1488078e7582ed5b3a8c195fda71.004.1,2024-12-01T04:25:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8381347e106b1488078e7582ed5b3a8c195fda71.001.2,2024-12-01T04:25:00-08:00 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:2.49.0.1.840.0.8d466aec059dff30a12ed0dca40bb3ec59ce3b09.002.1,2024-11-30T21:08:00-08:00 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:2.49.0.1.840.0.22f3aa05e658208dfe2e8e70be6a5574d7d1b26d.001.1,2024-11-30T11:49:00-08:00 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.a9bb6c9a5459b3ed795a81a2bf55436fcc5cc522.001.1,2024-11-30T02:40:00-08:00 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.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...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...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T12:15:00-08:00 Actual Update Met Expected Moderate Likely Inner Vancouver Metro SAME 053011 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 041036 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...For the Air Stagnation Advisory, 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. For the Freezing Fog Advisory, areas of fog and freezing fog, with visibility one quarter mile or less at times. * WHERE...Central and Southern Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Thursday. For the Freezing Fog Advisory, until noon PST today. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. 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 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T12:15:00-08:00 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 041036 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.ZF.Y.0003.000000T0000Z-241204T2000Z/ eventEndingTime 2024-12-04T20:00:00+00:00

* 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...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T12:15:00-08:00 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 041036 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...For the Air Stagnation Advisory, 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. For the Freezing Fog Advisory, areas of fog and freezing fog, with visibility one quarter mile or less at times. * WHERE...Central and Southern Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Thursday. For the Freezing Fog Advisory, until noon PST today. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. 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 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T02:36:00-08:00 2024-12-04T12:15:00-08:00 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 041036 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY 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 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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...Visibility one quarter to one half mile in areas of dense fog and freezing fog. * WHERE...Hood Canal Area, Bellevue and Vicinity, Bremerton and Vicinity, Everett and Vicinity, Seattle and Vicinity, Southwest Interior, and Tacoma Area. * WHEN...Until 10 AM PST this morning. * IMPACTS...Areas of low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Sub-freezing temperatures have caused areas of freezing fog, which may cause black ice to form on roadways. Dense Fog Advisory 2024-12-04T02:05:00-08:00 2024-12-04T02:05:00-08:00 2024-12-04T02:05:00-08:00 2024-12-04T10:00:00-08:00 Actual Alert Met Expected Moderate Likely Southwest Interior; Everett and Vicinity; Tacoma Area; Hood Canal Area; Bellevue and Vicinity; Seattle and Vicinity; Bremerton and Vicinity SAME 053041 SAME 053067 SAME 053035 SAME 053061 SAME 053053 SAME 053031 SAME 053045 SAME 053033 UGC WAZ504 UGC WAZ507 UGC WAZ509 UGC WAZ511 UGC WAZ556 UGC WAZ558 UGC WAZ559 AWIPSidentifier NPWSEW WMOidentifier WWUS76 KSEW 041005 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KSEW.FG.Y.0003.241204T1005Z-241204T1800Z/ eventEndingTime 2024-12-04T18:00:00+00:00

* 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. Dense Fog Advisory 2024-12-04T03:05:00-07:00 2024-12-04T03:05:00-07:00 2024-12-04T03:05:00-07:00 2024-12-04T11:15:00-07:00 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 041005 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.FG.Y.0015.000000T0000Z-241205T2100Z/ eventEndingTime 2024-12-05T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.137dd67a70e90ab60864f344f0883c520d2dbb25.001.1,2024-12-02T16:53:00-07:00

* 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 2024-12-04T03:05:00-07:00 2024-12-04T03:05:00-07:00 2024-12-04T03:05:00-07:00 2024-12-04T11:15:00-07:00 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 041005 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...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 2024-12-04T03:05:00-07:00 2024-12-04T03:05:00-07:00 2024-12-04T03:05:00-07:00 2024-12-04T11:15:00-07:00 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 041005 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...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...Until 4 PM PST Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-03T23:23:00-08:00 2024-12-03T23:23:00-08:00 2024-12-03T23:23:00-08:00 2024-12-06T16:00:00-08:00 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 040723 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST FRIDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.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 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.9c27171c878268523476a08c8f428005abbc2916.002.1,2024-12-02T08:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2979ff05f9d447faf99cfe2c15994e0c54eedbd6.003.1,2024-12-02T07:55:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2979ff05f9d447faf99cfe2c15994e0c54eedbd6.001.2,2024-12-02T07:55:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b36104a02de10254ffd04e2821414cd4ac77f3eb.003.1,2024-12-01T17:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.b36104a02de10254ffd04e2821414cd4ac77f3eb.001.2,2024-12-01T17:37:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.2decfe30bcff2b1e4394c0c7af4cc7e93002145b.002.1,2024-12-01T13:02:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f2630113c6a23035d6da2eeb45f014686afb4bf3.004.1,2024-12-01T09:10:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f2630113c6a23035d6da2eeb45f014686afb4bf3.002.2,2024-12-01T09:10:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c983e2f605cdde96daa980af0b404b7c50e6a841.004.1,2024-12-01T04:20:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c983e2f605cdde96daa980af0b404b7c50e6a841.002.1,2024-12-01T04:20:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5e516d40508b3d2f114c1bac7f4b9d3284a3501b.004.1,2024-12-01T04:10:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5e516d40508b3d2f114c1bac7f4b9d3284a3501b.002.2,2024-12-01T04:10:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5e1a0d77014e0c17b5c15bd86f091783fea1243b.002.1,2024-12-01T03:24:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d86ec03bb3c5f97679cf15b6177bf510c0c994c4.002.1,2024-11-30T13:24:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.01a906ef6a8667afc0ddca03775b4458400e1364.004.1,2024-11-30T11:50:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.01a906ef6a8667afc0ddca03775b4458400e1364.001.2,2024-11-30T11:50:00-08:00 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

Dense freezing fog has formed along Interstate 84 east of Pendleton on Cabbage Hill, with visibilities less than one quarter mile. Motorists are urged to use caution when traveling this stretch of interstate tonight and be alert for patches of ice on the roadways. Special Weather Statement 2024-12-03T23:07:00-08:00 2024-12-03T23:07:00-08:00 2024-12-03T23:07:00-08:00 2024-12-04T10:00:00-08:00 Actual Alert Met Expected Moderate Observed Foothills of the Northern Blue Mountains of Oregon SAME 041059 UGC ORZ507 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 040707 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

* 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 Wednesday. * IMPACTS...Low visibility and slick roads could make driving conditions hazardous. Freezing Fog Advisory 2024-12-03T19:32:00-08:00 2024-12-03T19:32:00-08:00 2024-12-03T19:32:00-08:00 2024-12-04T07:00:00-08:00 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 040332 NWSheadline FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST WEDNESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.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.bfcf16f50050d6e90a88e7c5da5f88e5e8aa1429.001.1,2024-12-03T04:59:00-08:00 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 quarter of a mile in freezing fog. * WHERE...Central Oregon. * WHEN...Until 11 AM PST Wednesday. * IMPACTS...Low visibility and slick roads could make driving conditions hazardous. Freezing Fog Advisory 2024-12-03T19:32:00-08:00 2024-12-03T19:32:00-08:00 2024-12-03T19:32:00-08:00 2024-12-04T07:00:00-08:00 Actual Update Met Expected Moderate Likely Central Oregon SAME 041013 SAME 041017 SAME 041031 UGC ORZ511 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 040332 NWSheadline FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST WEDNESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.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.bfcf16f50050d6e90a88e7c5da5f88e5e8aa1429.002.1,2024-12-03T04:59:00-08:00 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...Visibility less than one quarter of a mile in freezing fog. * WHERE...John Day Basin. * WHEN...Until 11 AM PST Wednesday. * IMPACTS...Low visibility and slick roads could make driving conditions hazardous. Freezing Fog Advisory 2024-12-03T19:32:00-08:00 2024-12-03T19:32:00-08:00 2024-12-03T19:32:00-08:00 2024-12-04T07:00:00-08:00 Actual Alert Met Expected Moderate Likely John Day Basin SAME 041023 SAME 041031 SAME 041049 SAME 041065 SAME 041069 UGC ORZ505 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 040332 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL 11 AM PST WEDNESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXA.KPDT.ZF.Y.0011.000000T0000Z-241204T1900Z/ eventEndingTime 2024-12-04T19:00:00+00:00

* 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. Dense Fog 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.FG.Y.0015.000000T0000Z-241205T2100Z/ eventEndingTime 2024-12-05T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.137dd67a70e90ab60864f344f0883c520d2dbb25.001.1,2024-12-02T16:53:00-07:00