NOAA Current Watches

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, light winds and limited air movements will lead to a period of stagnant air conditions. * WHERE...Lane County Lowlands. * WHEN...For the Dense Fog Advisory, until noon PST today. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Air Stagnation Advisory 2025-01-15T08:25:00-08:00 2025-01-15T08:25:00-08:00 2025-01-15T08:25:00-08:00 2025-01-15T12:00:00-08:00 Actual Update Met Expected Moderate Likely Lane County Lowlands SAME 041039 UGC ORZ118 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 151625 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ed0a3cb25ed816e5766ea2203c61afcbe3142ab5.001.1,2025-01-14T15:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97cc5f5f6e00872eecef89edc45e16d7616e1e14.001.1,2025-01-14T08:06:00-08:00

* WHAT...Light winds and limited air movements will lead to a period of stagnant air conditions. * WHERE...Central Willamette Valley, Benton County Lowlands, and Linn County Lowlands. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2025-01-15T08:25:00-08:00 2025-01-15T08:25:00-08:00 2025-01-15T08:25:00-08:00 2025-01-15T12:00:00-08:00 Actual Update Met Expected Moderate Likely West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands SAME 041071 SAME 041053 SAME 041047 SAME 041005 SAME 041003 SAME 041043 UGC ORZ114 UGC ORZ115 UGC ORZ116 UGC ORZ117 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 151625 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ed0a3cb25ed816e5766ea2203c61afcbe3142ab5.001.1,2025-01-14T15:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97cc5f5f6e00872eecef89edc45e16d7616e1e14.001.1,2025-01-14T08:06:00-08:00

Patchy dense freezing fog has been observed across north central Oregon as well as the Lower Columbia Basin of Oregon and the Blue Mountain Foothills. The visibility is less than one half mile in places. This includes Highway 11 near Weston, Interstate 84 in Hermiston, and Highways 97 and 197 north of Madras. Drivers should expect a sudden reduction in visibility as well as black ice on the roadways. Special Weather Statement 2025-01-15T06:11:00-08:00 2025-01-15T06:11:00-08:00 2025-01-15T06:11:00-08:00 2025-01-15T10:00:00-08:00 Actual Alert Met Expected Moderate Observed Lower Columbia Basin of Oregon; Foothills of the Northern Blue Mountains of Oregon; Foothills of the Southern Blue Mountains of Oregon; North Central Oregon SAME 041049 SAME 041059 SAME 041021 SAME 041069 SAME 041055 SAME 041065 UGC ORZ044 UGC ORZ507 UGC ORZ508 UGC ORZ510 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 151411 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

* WHAT...Light winds and limited air movements will lead to a period of stagnant air conditions. * WHERE...Central and Southern Willamette Valley. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2025-01-15T04:32:00-08:00 2025-01-15T04:32:00-08:00 2025-01-15T04:32:00-08:00 2025-01-16T04:00:00-08:00 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 151232 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.ed0a3cb25ed816e5766ea2203c61afcbe3142ab5.001.1,2025-01-14T15:22:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.97cc5f5f6e00872eecef89edc45e16d7616e1e14.001.1,2025-01-14T08:06:00-08:00

Patchy dense freezing fog has been observed across north central Oregon as well as the Lower Columbia Basin of Oregon and the Blue Mountain Foothills. The visibility is less than one half mile in places. This includes Highway 11 near Weston, Interstate 84 in Hermiston, and Highways 97 and 197 north of Madras. Drivers should expect a sudden reduction in visibility as well as black ice on the roadways. Special Weather Statement 2025-01-15T02:59:00-08:00 2025-01-15T02:59:00-08:00 2025-01-15T02:59:00-08:00 2025-01-15T06:00:00-08:00 Actual Alert Met Expected Moderate Observed Lower Columbia Basin of Oregon; Foothills of the Northern Blue Mountains of Oregon; Foothills of the Southern Blue Mountains of Oregon; North Central Oregon SAME 041049 SAME 041059 SAME 041021 SAME 041069 SAME 041055 SAME 041065 UGC ORZ044 UGC ORZ507 UGC ORZ508 UGC ORZ510 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 151059 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

* 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. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...Until 11 AM MST /10 AM PST/ Friday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2025-01-15T03:41:00-07:00 2025-01-15T03:41:00-07:00 2025-01-15T03:41:00-07:00 2025-01-16T05:00:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Lower Treasure Valley; Boise Mountains; Upper Treasure Valley; Southwest Highlands; Western Magic Valley; Camas Prairie; Owyhee Mountains; Southern Twin Falls County; Upper Weiser River; Harney County; Baker County; Malheur County; Oregon Lower Treasure Valley SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016027 SAME 016073 SAME 016075 SAME 016015 SAME 016025 SAME 016039 SAME 016001 SAME 016047 SAME 016053 SAME 016083 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ012 UGC IDZ013 UGC IDZ014 UGC IDZ015 UGC IDZ016 UGC IDZ028 UGC IDZ029 UGC IDZ030 UGC IDZ033 UGC ORZ061 UGC ORZ062 UGC ORZ063 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 151041 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ FRIDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0002.000000T0000Z-250117T1800Z/ eventEndingTime 2025-01-17T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.0bff693a6ed14962d6cd46825a6ae99a7725841b.001.1,2025-01-14T04:12:00-07:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.27083b3cc69f3c8fb57459905d4c7b3dde809a0b.001.1,2025-01-13T13:24:00-07:00

* WHAT...Visibility one quarter to one half mile in freezing fog. * WHERE...Lower Columbia Basin of Washington. * WHEN...Until noon PST today. * IMPACTS...Low visibility could make driving conditions hazardous. Slick spots on roadways possible under freezing fog. Freezing Fog Advisory 2025-01-15T00:47:00-08:00 2025-01-15T00:47:00-08:00 2025-01-15T00:47:00-08:00 2025-01-15T12:00:00-08:00 Actual Alert Met Expected Moderate Likely Lower Columbia Basin of Washington SAME 053005 SAME 053021 SAME 053039 SAME 053071 UGC WAZ028 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 150847 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXA.KPDT.ZF.Y.0005.000000T0000Z-250115T2000Z/ eventEndingTime 2025-01-15T20:00:00+00:00

* WHAT...Visibility one quarter to one half mile in freezing fog. * WHERE...Foothills of the Blue Mountains of Washington. * WHEN...Until noon PST today. * IMPACTS...Low visibility could make driving conditions hazardous. Slick spots on roadways possible under freezing fog. Freezing Fog Advisory 2025-01-15T00:47:00-08:00 2025-01-15T00:47:00-08:00 2025-01-15T00:47:00-08:00 2025-01-15T12:00:00-08:00 Actual Update Met Expected Moderate Likely Foothills of the Blue Mountains of Washington SAME 053013 SAME 053071 UGC WAZ029 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 150847 NWSheadline FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPDT.ZF.Y.0005.000000T0000Z-250115T2000Z/ eventEndingTime 2025-01-15T20:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cd6b3cfa3984edb2e326d6f013c68f98a289b8d2.001.1,2025-01-14T10:28:00-08:00

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in freezing fog. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Valleys in eastern Curry County and Josephine County and Jackson County. This includes, the Illinois, Rogue and Applegate valleys, including Grants Pass, Selma, Cave Junction, Applegate, Rogue River, Medford, Eagle Point, Jacksonville, Ashland and surrounding areas. * WHEN...For the Freezing Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing fog may allow spots of ice to develop on roadways. Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion. Freezing Fog Advisory 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T10:15:00-08:00 Actual Alert Met Expected Moderate Likely Eastern Curry County and Josephine County; Jackson County SAME 041015 SAME 041033 SAME 041029 UGC ORZ024 UGC ORZ026 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 150817 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KMFR.ZF.Y.0002.250115T0817Z-250115T1800Z/ eventEndingTime 2025-01-15T18:00:00+00:00

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Valleys in central Douglas County. This includes Roseburg, Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and surrounding areas. * WHEN...For the Dense Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion. Dense Fog Advisory 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T10:15:00-08:00 Actual Alert Met Expected Moderate Likely Central Douglas County SAME 041011 SAME 041019 UGC ORZ023 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 150817 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KMFR.FG.Y.0004.250115T0817Z-250115T1800Z/ eventEndingTime 2025-01-15T18:00:00+00:00

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Valleys in central Douglas County. This includes Roseburg, Sutherlin, Elkton, Camas Valley, Canyonville, Glendale and surrounding areas. * WHEN...For the Dense Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion. Air Stagnation Advisory 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T10:15:00-08:00 Actual Update Met Expected Moderate Likely Central Douglas County SAME 041011 SAME 041019 UGC ORZ023 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 150817 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KMFR.AS.Y.0002.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c13cf4c24650bd9efa1fede467b1992a9cbc7a3f.001.2,2025-01-14T02:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.87dfd35d4a314229ae2f8929115ac73db8f1591e.001.1,2025-01-13T10:42:00-08:00

* WHAT...Poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Valleys in near the South Central Oregon Coast and in the Eastern Douglas County Foothills, and east of the Cascades in Klamath and Lake Counties. This includes the cities of Coquille, Myrtle Point, Steamboat, Klamath Falls, Chiloquin, Crescent, Lakeview, Paisley, Silver Lake and surrounding areas. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion. Air Stagnation Advisory 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T10:15:00-08:00 Actual Update Met Expected Moderate Likely South Central Oregon Coast; Eastern Douglas County Foothills; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County SAME 041011 SAME 041015 SAME 041019 SAME 041035 SAME 041037 UGC ORZ021 UGC ORZ025 UGC ORZ029 UGC ORZ030 UGC ORZ031 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 150817 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KMFR.AS.Y.0002.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c13cf4c24650bd9efa1fede467b1992a9cbc7a3f.003.1,2025-01-14T02:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.87dfd35d4a314229ae2f8929115ac73db8f1591e.001.1,2025-01-13T10:42:00-08:00

* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in freezing fog. For the Air Stagnation Advisory, poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...Valleys in eastern Curry County and Josephine County and Jackson County. This includes, the Illinois, Rogue and Applegate valleys, including Grants Pass, Selma, Cave Junction, Applegate, Rogue River, Medford, Eagle Point, Jacksonville, Ashland and surrounding areas. * WHEN...For the Freezing Fog Advisory, until 10 AM PST this morning. For the Air Stagnation Advisory, until 10 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Freezing fog may allow spots of ice to develop on roadways. Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion. Air Stagnation Advisory 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T00:17:00-08:00 2025-01-15T10:15:00-08:00 Actual Update Met Expected Moderate Likely Eastern Curry County and Josephine County; Jackson County SAME 041015 SAME 041033 SAME 041029 UGC ORZ024 UGC ORZ026 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 150817 NWSheadline FREEZING FOG ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KMFR.AS.Y.0002.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c13cf4c24650bd9efa1fede467b1992a9cbc7a3f.002.2,2025-01-14T02:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.87dfd35d4a314229ae2f8929115ac73db8f1591e.001.1,2025-01-13T10:42:00-08:00

Dense freezing fog across Walla Walla county is slowly expanding west towards the Columbia River and the Tri-Cities area, with low visibilities being observed near the confluence of the Snake and Columbia Rivers. This area of fog is expected to gradually extend west through the overnight hours, with visibilities of one half mile or less expected. Special Weather Statement 2025-01-14T22:06:00-08:00 2025-01-14T22:06:00-08:00 2025-01-14T22:06:00-08:00 2025-01-15T01:00:00-08:00 Actual Alert Met Expected Moderate Observed Lower Columbia Basin of Washington SAME 053005 SAME 053021 SAME 053039 SAME 053071 UGC WAZ028 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 150606 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

A narrow band of freezing fog extending from Dufur to Lexington has developed this evening. The fog is expected to gradually expand across the southern Blue Mountain Foothills as North Central Oregon through the overnight hours, with visibilities of a mile or less possible. Special Weather Statement 2025-01-14T22:06:00-08:00 2025-01-14T22:06:00-08:00 2025-01-14T22:06:00-08:00 2025-01-15T01:00:00-08:00 Actual Alert Met Expected Moderate Observed 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 SPSPDT WMOidentifier WWUS86 KPDT 150606 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

Dense freezing fog has been slow to expand south this evening, but is still expected to continue to grow in area through the overnight hours. Visibility a half mile or less will continue to impact Oregon Highway 11 north of Adams and areas from Helix to the state border. Special Weather Statement 2025-01-14T22:06:00-08:00 2025-01-14T22:06:00-08:00 2025-01-14T22:06:00-08:00 2025-01-15T01:00:00-08:00 Actual Alert Met Expected Moderate Observed Foothills of the Northern Blue Mountains of Oregon SAME 041059 UGC ORZ507 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 150606 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

* WHAT...Visibility one quarter mile or less in freezing fog. * WHERE...Foothills of the Blue Mountains of Washington. * WHEN...Until noon PST Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. Slick spots on roadways possible under freezing fog. Freezing Fog Advisory 2025-01-14T21:52:00-08:00 2025-01-14T21:52:00-08:00 2025-01-14T21:52:00-08:00 2025-01-15T07:30:00-08:00 Actual Update Met Expected Moderate Likely Foothills of the Blue Mountains of Washington SAME 053013 SAME 053071 UGC WAZ029 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 150552 NWSheadline FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL NOON PST WEDNESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPDT.ZF.Y.0005.000000T0000Z-250115T2000Z/ eventEndingTime 2025-01-15T20:00:00+00:00

Dense freezing fog with visibilities at a half mile or less is beginning to extend along Oregon Highway 11. Observations show the fog has extended at least as far south as Athena. The fog bank is expected to continue expanding south along the northern Blue Mountain foothills, impacting the Pendleton area and portions of Interstate-84 later tonight. Special Weather Statement 2025-01-14T19:19:00-08:00 2025-01-14T19:19:00-08:00 2025-01-14T19:19:00-08:00 2025-01-14T22:30:00-08:00 Actual Alert Met Expected Moderate Observed Foothills of the Northern Blue Mountains of Oregon SAME 041059 UGC ORZ507 AWIPSidentifier SPSPDT WMOidentifier WWUS86 KPDT 150319 BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS EAS-ORG WXR

* WHAT...Poor air quality due to a period of stagnant air with light winds. * WHERE...Central and Southern Willamette Valley. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2025-01-14T15:22:00-08:00 2025-01-14T15:22:00-08:00 2025-01-14T15:22:00-08:00 2025-01-15T04:00:00-08:00 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 142322 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.AS.Y.0001.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00

* WHAT...Poor air quality will continue. This is due to an inversion and stagnant air conditions near the surface that will continue to trap pollutants. * WHERE...All inland valleys of southern Oregon, including but not limited to the Rogue, Illinois, Umpqua, and Klamath valleys. This includes the cities of Medford, Ashland, Klamath Falls, Roseburg, Grants Pass, Elkton, Canyonville, Cave Junction, Lakeview, Coquille, and Myrtle Point. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. * ADDITIONAL DETAILS...Strong valley inversions, very shallow mixing layers of less than 1000 feet, and calm winds are expected throughout the advisory time, especially during the overnight and morning hours. A weak front on Thursday may allow for a brief period of improved mixing and particulate dispersion. Air Stagnation Advisory 2025-01-14T12:45:00-08:00 2025-01-14T12:45:00-08:00 2025-01-14T12:45:00-08:00 2025-01-15T04:00:00-08:00 Actual Alert Met Expected Moderate Likely South Central Oregon Coast; Central Douglas County; Eastern Curry County and Josephine County; Eastern Douglas County Foothills; Jackson County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County SAME 041011 SAME 041015 SAME 041019 SAME 041033 SAME 041029 SAME 041035 SAME 041037 UGC ORZ021 UGC ORZ023 UGC ORZ024 UGC ORZ025 UGC ORZ026 UGC ORZ029 UGC ORZ030 UGC ORZ031 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 142045 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KMFR.AS.Y.0002.000000T0000Z-250116T1800Z/ eventEndingTime 2025-01-16T18:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c13cf4c24650bd9efa1fede467b1992a9cbc7a3f.003.1,2025-01-14T02:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c13cf4c24650bd9efa1fede467b1992a9cbc7a3f.002.2,2025-01-14T02:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.c13cf4c24650bd9efa1fede467b1992a9cbc7a3f.001.2,2025-01-14T02:16:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.87dfd35d4a314229ae2f8929115ac73db8f1591e.001.1,2025-01-13T10:42:00-08:00