NOAA Current Watches

* 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, West Central Willamette Valley, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T11:00:00-08:00 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; West Central Willamette Valley; 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 ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051430 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d3c9eb102f71540f560d8affc7bd8f08a6c5473b.002.1,2024-12-04T17:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.002.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.003.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.002.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 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* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...South Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Saturday. For the Freezing Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible early Thursday. Freezing Fog Advisory 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041003 SAME 041043 SAME 041039 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051430 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.ZF.Y.0004.000000T0000Z-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d3c9eb102f71540f560d8affc7bd8f08a6c5473b.001.1,2024-12-04T17:04:00-08:00

* 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, West Central Willamette Valley, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T11:00:00-08:00 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; West Central Willamette Valley; 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 ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051430 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d3c9eb102f71540f560d8affc7bd8f08a6c5473b.002.1,2024-12-04T17:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.002.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.003.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.002.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 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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...East Central Willamette Valley. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely East Central Willamette Valley SAME 041047 SAME 041005 UGC ORZ115 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051430 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... ...FREEZING FOG ADVISORY IS CANCELLED BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d3c9eb102f71540f560d8affc7bd8f08a6c5473b.002.1,2024-12-04T17:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.002.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.001.2,2024-12-03T17:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.312ae7f357b1f56eb5b6d55da72213a88b859445.001.1,2024-12-03T11:41:00-08:00 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.002.1,2024-12-02T20:14:00-08:00 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.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:2.49.0.1.840.0.1d6558ac1d50f13795a18801016639790d051bf7.002.1,2024-12-01T12:04:00-08:00 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:2.49.0.1.840.0.624fe1f039f7ebb3460638180d38b0bcea8a9d1e.005.1,2024-12-01T09:34:00-08:00 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.a4b59ebc83676d657dbb3ed8640dcc6b78cb77d9.001.2,2024-12-01T01:32:00-08:00 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.d28e420adcd0dbfde8d3dabe234299df3b403222.003.1,2024-11-28T08:22:00-08:00 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.d569cdb484c1d336d7f6b4a304e870456bb81e5e.003.1,2024-11-27T23:06:00-08:00 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:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.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:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.001.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.001.2,2024-11-27T10:55:00-08:00

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...South Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Saturday. For the Freezing Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible early Thursday. Air Stagnation Advisory 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T06:30:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041003 SAME 041043 SAME 041039 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051430 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.d3c9eb102f71540f560d8affc7bd8f08a6c5473b.001.2,2024-12-04T17:04:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.001.2,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.002.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.001.2,2024-12-03T17:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.312ae7f357b1f56eb5b6d55da72213a88b859445.001.1,2024-12-03T11:41:00-08:00 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.002.1,2024-12-02T20:14:00-08:00 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:2.49.0.1.840.0.64670f7cd7a29a82370ee72b3e18ba136ad108c7.001.1,2024-12-01T12:18:00-08:00 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:2.49.0.1.840.0.6cb7a31bb4f5d5534fb91a98d0c7a8ea3b1b1df8.001.2,2024-11-28T02:47:00-08:00 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.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.e687fb99ac77517c94d13096528e22603fa46c74.001.1,2024-11-27T16:50:00-08:00

* WHAT...Visibility one quarter mile or less 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 2024-12-05T06:07:00-08:00 2024-12-05T06:07:00-08:00 2024-12-05T06:07:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely Central Oregon SAME 041013 SAME 041017 SAME 041031 UGC ORZ511 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 051407 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-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.86b8da04ee5fbf99e28335a8107bff4e1aaea39b.003.1,2024-12-04T10:45:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f148a675173efdb6b18e3cc09ecbb78b90cc3f27.003.1,2024-12-04T06:03:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0abb189538f39f2ce43751ff89f096e7bb6199f0.003.1,2024-12-03T19:32:00-08:00 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...Visibility one quarter mile or less 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 2024-12-05T06:07:00-08:00 2024-12-05T06:07:00-08:00 2024-12-05T06:07:00-08:00 2024-12-05T11:00:00-08:00 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 051407 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-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.86b8da04ee5fbf99e28335a8107bff4e1aaea39b.002.1,2024-12-04T10:45:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f148a675173efdb6b18e3cc09ecbb78b90cc3f27.002.1,2024-12-04T06:03:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0abb189538f39f2ce43751ff89f096e7bb6199f0.002.1,2024-12-03T19:32:00-08:00 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 one quarter mile or less 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 2024-12-05T06:07:00-08:00 2024-12-05T06:07:00-08:00 2024-12-05T06:07:00-08:00 2024-12-05T11:00:00-08:00 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 051407 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-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.86b8da04ee5fbf99e28335a8107bff4e1aaea39b.001.1,2024-12-04T10:45:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.f148a675173efdb6b18e3cc09ecbb78b90cc3f27.001.1,2024-12-04T06:03:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0abb189538f39f2ce43751ff89f096e7bb6199f0.001.1,2024-12-03T19:32:00-08:00

* WHAT...Visibility one quarter to one half mile in areas of dense fog. * WHERE...Admiralty Inlet Area, Hood Canal Area, Western Skagit County, Western Whatcom County, and Bremerton and Vicinity. * WHEN...Until 10 AM PST this morning. * IMPACTS...Areas of low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-05T04:00:00-08:00 2024-12-05T04:00:00-08:00 2024-12-05T04:00:00-08:00 2024-12-05T10:00:00-08:00 Actual Update Met Expected Moderate Likely Western Whatcom County; Western Skagit County; Admiralty Inlet Area; Hood Canal Area; Bremerton and Vicinity SAME 053073 SAME 053057 SAME 053029 SAME 053031 SAME 053035 SAME 053045 UGC WAZ503 UGC WAZ506 UGC WAZ510 UGC WAZ511 UGC WAZ559 AWIPSidentifier NPWSEW WMOidentifier WWUS76 KSEW 051200 NWSheadline DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KSEW.FG.Y.0004.000000T0000Z-241205T1800Z/ eventEndingTime 2024-12-05T18:00:00+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...Inner Vancouver Metro. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely Inner Vancouver Metro SAME 053011 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.003.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.004.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.003.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.003.1,2024-12-03T17:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.312ae7f357b1f56eb5b6d55da72213a88b859445.002.1,2024-12-03T11:41:00-08:00 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. * 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, West Central Willamette Valley, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 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; West Central Willamette Valley; 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 ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.002.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.003.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.002.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.002.1,2024-12-03T17:08:00-08:00 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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, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...East Central Willamette Valley. * WHEN...For the Freezing Fog Advisory, until 11 AM PST this morning. For the Air Stagnation Advisory, until 4 AM PST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible overnight into early Thursday. Freezing Fog Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 Actual Alert Met Expected Moderate Likely East Central Willamette Valley SAME 041047 SAME 041005 UGC ORZ115 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL 11 AM PST THIS MORNING... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXA.KPQR.ZF.Y.0004.000000T0000Z-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...South Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Saturday. For the Freezing Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible overnight into early Thursday. Freezing Fog Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041003 SAME 041043 SAME 041039 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.ZF.Y.0004.000000T0000Z-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...South Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Saturday. For the Freezing Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible overnight into early Thursday. Air Stagnation Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041003 SAME 041043 SAME 041039 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THIS MORNING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.001.2,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.002.1,2024-12-04T09:47:00-08:00 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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:2.49.0.1.840.0.6cb7a31bb4f5d5534fb91a98d0c7a8ea3b1b1df8.001.2,2024-11-28T02:47:00-08:00 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.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.e687fb99ac77517c94d13096528e22603fa46c74.001.1,2024-11-27T16:50:00-08:00

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...East Central Willamette Valley. * WHEN...For the Freezing Fog Advisory, until 11 AM PST this morning. For the Air Stagnation Advisory, until 4 AM PST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible overnight into early Thursday. Air Stagnation Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 Actual Update Met Expected Moderate Likely East Central Willamette Valley SAME 041047 SAME 041005 UGC ORZ115 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL 11 AM PST THIS MORNING... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.002.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.001.2,2024-12-03T17:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.312ae7f357b1f56eb5b6d55da72213a88b859445.001.1,2024-12-03T11:41:00-08:00 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.002.1,2024-12-02T20:14:00-08:00 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.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:2.49.0.1.840.0.1d6558ac1d50f13795a18801016639790d051bf7.002.1,2024-12-01T12:04:00-08:00 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:2.49.0.1.840.0.624fe1f039f7ebb3460638180d38b0bcea8a9d1e.005.1,2024-12-01T09:34:00-08:00 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.a4b59ebc83676d657dbb3ed8640dcc6b78cb77d9.001.2,2024-12-01T01:32:00-08:00 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.d28e420adcd0dbfde8d3dabe234299df3b403222.003.1,2024-11-28T08:22:00-08:00 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.d569cdb484c1d336d7f6b4a304e870456bb81e5e.003.1,2024-11-27T23:06:00-08:00 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:2.49.0.1.840.0.2e43107565bb75e40151c4e5a51b4e379352916c.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:2.49.0.1.840.0.3e384f61e5e30bc09e3bf73f0378b067870211cd.001.1,2024-11-27T12:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.7da93e300caaa1066d3cf61e9144c4b03b63b156.001.2,2024-11-27T10:55:00-08:00

* WHAT...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. * 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, West Central Willamette Valley, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T03:32:00-08:00 2024-12-05T11:00:00-08:00 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; West Central Willamette Valley; 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 ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 051132 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.48d2ffac87d57b7b2cf1f7272e2e5d0041d3f561.002.1,2024-12-04T11:59:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.003.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.002.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.002.1,2024-12-03T17:08:00-08:00 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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 2024-12-04T23:22:00-08:00 2024-12-04T23:22:00-08:00 2024-12-04T23:22:00-08:00 2024-12-05T11:00:00-08:00 Actual Alert Met Expected Moderate Observed Foothills of the Northern Blue Mountains of Oregon SAME 041059 UGC ORZ507 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 050722 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

* 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 Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-04T22:18:00-08:00 2024-12-04T22:18:00-08:00 2024-12-04T22:18:00-08:00 2024-12-05T11:15:00-08:00 Actual Update Met Expected Moderate Likely Inner Vancouver Metro SAME 053011 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 050618 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.004.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.003.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.003.1,2024-12-03T17:08:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.312ae7f357b1f56eb5b6d55da72213a88b859445.002.1,2024-12-03T11:41:00-08:00 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, Central Willamette Valley, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-04T22:18:00-08:00 2024-12-04T22:18:00-08:00 2024-12-04T22:18:00-08:00 2024-12-05T11:15:00-08:00 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; West Central Willamette Valley; East Central Willamette Valley; 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 ORZ123 UGC ORZ124 UGC ORZ125 UGC WAZ202 UGC WAZ204 UGC WAZ205 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 050618 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXT.KPQR.AS.Y.0001.000000T0000Z-241207T1200Z/ eventEndingTime 2024-12-07T12:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.003.1,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.5dd9f92a7e38919c65f0111c218b77fc42fad824.001.2,2024-12-04T09:47:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.002.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.067f3fa047ed72231e3a84a0d68d4836c5f5ee4d.001.1,2024-12-04T02:36:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.8cc1e43dab4fb0dac690e433210529b448df9133.002.1,2024-12-03T17:08:00-08:00 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* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in fog and freezing fog. 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. * WHERE...South Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Saturday. For the Freezing Fog Advisory, until 11 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. With temperatures at or just below freezing, fog droplets may freeze on contact with surfaces, with slick spots on roadways possible overnight into early Thursday. Freezing Fog Advisory 2024-12-04T22:18:00-08:00 2024-12-04T22:18:00-08:00 2024-12-04T22:18:00-08:00 2024-12-05T11:15:00-08:00 Actual Update Met Expected Moderate Likely Benton County Lowlands; Linn County Lowlands; Lane County Lowlands SAME 041003 SAME 041043 SAME 041039 UGC ORZ116 UGC ORZ117 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 050618 NWSheadline AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST SATURDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.ZF.Y.0004.000000T0000Z-241205T1900Z/ eventEndingTime 2024-12-05T19:00:00+00:00