NOAA Current Watches

* WHAT...A moderate risk of sneaker waves is expected. * WHERE...The beaches and shorelines of Curry, Coos, and Douglas counties. * WHEN...From Monday evening through Tuesday afternoon. * IMPACTS...Sneaker waves can run up significantly farther on beaches than normal, including over rocks and jetties. These waves can suddenly knock people off of their feet and quickly pull them into the cold ocean waters, resulting in serious injury or death. Waves may also lift driftwood logs, trapping anyone caught underneath. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Beach Hazards Statement 2024-12-10T02:25:00-08:00 2024-12-10T02:25:00-08:00 2024-12-10T02:25:00-08:00 2024-12-10T16:00:00-08:00 Actual Update Met Expected Moderate Likely South Central Oregon Coast; Curry County Coast SAME 041011 SAME 041015 SAME 041019 UGC ORZ021 UGC ORZ022 AWIPSidentifier CFWMFR WMOidentifier WHUS46 KMFR 101025 NWSheadline BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS AFTERNOON BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KMFR.BH.S.0009.000000T0000Z-241211T0000Z/ eventEndingTime 2024-12-11T00:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.fb80e2de632ab2b87653dd1abd4f2fbb21b4721e.001.1,2024-12-09T02:27:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1e826a6c90ed4409d5d87d959b56288c8428eee4.001.1,2024-12-08T22:11:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.daa01733021f41d65253afd744fccb26f87b248a.001.1,2024-12-08T14:05:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.940f5f86eed55e628ee337d8c389470a3611af95.001.1,2024-12-08T06:51:00-08:00 w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.1f941f075cc1e6c2eb0a44de53db963e281056fc.001.1,2024-12-07T12:59:00-08:00

* WHAT...For the Air Stagnation Advisory, 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...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until noon MST today. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-10T03:19:00-07:00 2024-12-10T03:19:00-07:00 2024-12-10T03:19:00-07:00 2024-12-10T12:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Upper Treasure Valley; Upper Weiser River; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 016001 SAME 016039 SAME 016003 SAME 041045 UGC IDZ012 UGC IDZ014 UGC IDZ033 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 101019 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.FG.Y.0018.000000T0000Z-241210T1900Z/ eventEndingTime 2024-12-10T19:00:00+00:00

* WHAT...For the Air Stagnation Advisory, 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...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until noon MST today. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Air Stagnation Advisory 2024-12-10T03:19:00-07:00 2024-12-10T03:19:00-07:00 2024-12-10T03:19:00-07:00 2024-12-10T12:00:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Upper Treasure Valley; Upper Weiser River; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 016001 SAME 016039 SAME 016003 SAME 041045 UGC IDZ012 UGC IDZ014 UGC IDZ033 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 101019 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON MST TODAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0003.000000T0000Z-241212T2100Z/ eventEndingTime 2024-12-12T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cc2f108361d56bdb5b9b7c5b912486006c82a1de.001.1,2024-12-09T03:14:00-07:00

* 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. * WHERE...Portions of southwest and west central Idaho and northeast and southeast Oregon. * WHEN...Until 2 PM MST /1 PM PST/ Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-10T03:19:00-07:00 2024-12-10T03:19:00-07:00 2024-12-10T03:19:00-07:00 2024-12-10T12:00:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Boise Mountains; Camas Prairie; Owyhee Mountains; Harney County; Baker County; Malheur County SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016015 SAME 016025 SAME 016039 SAME 016073 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ013 UGC IDZ028 UGC IDZ029 UGC ORZ061 UGC ORZ062 UGC ORZ063 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 101019 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST /1 PM PST/ THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0003.000000T0000Z-241212T2100Z/ eventEndingTime 2024-12-12T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cc2f108361d56bdb5b9b7c5b912486006c82a1de.002.1,2024-12-09T03:14:00-07:00

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central Douglas County, Josephine County, and Jackson County. * WHEN...Until noon PST today. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-10T00:52:00-08:00 2024-12-10T00:52:00-08:00 2024-12-10T00:52:00-08:00 2024-12-10T12:00:00-08:00 Actual Alert Met Expected Moderate Likely Central Douglas County; Eastern Curry County and Josephine County; Jackson County SAME 041011 SAME 041019 SAME 041015 SAME 041033 SAME 041029 UGC ORZ023 UGC ORZ024 UGC ORZ026 AWIPSidentifier NPWMFR WMOidentifier WWUS76 KMFR 100852 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TODAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KMFR.FG.Y.0011.241210T0852Z-241210T2000Z/ eventEndingTime 2024-12-10T20:00:00+00:00

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Oregon, Inner Portland Metro. In Washington, Inner Vancouver Metro and North Clark County Lowlands. * WHEN...Until 10 AM PST Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-10T10:00:00-08:00 Actual Alert Met Expected Moderate Likely Inner Portland Metro; North Clark County Lowlands; Inner Vancouver Metro SAME 041051 SAME 041005 SAME 053011 UGC ORZ111 UGC WAZ205 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 100628 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXA.KPQR.FG.Y.0042.000000T0000Z-241210T1800Z/ eventEndingTime 2024-12-10T18:00:00+00:00

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...South Willamette Valley, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Portland West Hills and Chehalem Mountain, East Central Willamette Valley, and South Washington Cascade Foothills. * WHEN...Until 10 AM PST Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-10T10:00:00-08:00 Actual Update Met Expected Moderate Likely Lower Columbia River; Tualatin Valley; West Hills and Chehalem Mountains; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; Cowlitz County Lowlands; South Washington Cascade Foothills SAME 041009 SAME 041067 SAME 041051 SAME 041005 SAME 041071 SAME 041047 SAME 041003 SAME 041043 SAME 041039 SAME 053015 SAME 053011 SAME 053059 UGC ORZ108 UGC ORZ109 UGC ORZ110 UGC ORZ115 UGC ORZ116 UGC ORZ117 UGC ORZ118 UGC WAZ204 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 100628 NWSheadline DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.FG.Y.0042.000000T0000Z-241210T1800Z/ eventEndingTime 2024-12-10T18:00:00+00:00

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Oregon, Inner Portland Metro. In Washington, Inner Vancouver Metro and North Clark County Lowlands. * WHEN...Until 10 AM PST Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-10T10:00:00-08:00 Actual Alert Met Expected Moderate Likely Inner Portland Metro; North Clark County Lowlands; Inner Vancouver Metro SAME 041051 SAME 041005 SAME 053011 UGC ORZ111 UGC WAZ205 UGC WAZ206 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 100628 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.EXA.KPQR.FG.Y.0042.000000T0000Z-241210T1800Z/ eventEndingTime 2024-12-10T18:00:00+00:00

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...South Willamette Valley, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Portland West Hills and Chehalem Mountain, East Central Willamette Valley, and South Washington Cascade Foothills. * WHEN...Until 10 AM PST Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-09T22:28:00-08:00 2024-12-10T10:00:00-08:00 Actual Update Met Expected Moderate Likely Lower Columbia River; Tualatin Valley; West Hills and Chehalem Mountains; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; Cowlitz County Lowlands; South Washington Cascade Foothills SAME 041009 SAME 041067 SAME 041051 SAME 041005 SAME 041071 SAME 041047 SAME 041003 SAME 041043 SAME 041039 SAME 053015 SAME 053011 SAME 053059 UGC ORZ108 UGC ORZ109 UGC ORZ110 UGC ORZ115 UGC ORZ116 UGC ORZ117 UGC ORZ118 UGC WAZ204 UGC WAZ208 AWIPSidentifier NPWPQR WMOidentifier WWUS76 KPQR 100628 NWSheadline DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KPQR.FG.Y.0042.000000T0000Z-241210T1800Z/ eventEndingTime 2024-12-10T18:00:00+00:00

* WHAT...Visibility at 1 mile or less with areas of quarter mile or less as well as areas of freezing fog. * WHERE...Lower Columbia Basin of Oregon and Washington, Eastern Columbia River Gorge of Oregon, Northern Blue Mountains of Oregon, Foothills of the Northern Blue Mountains of Oregon, and Foothills of the Blue Mountains of Washington. * WHEN...Until noon PST Tuesday. * IMPACTS...Low visibility and areas of freezing fog could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T21:27:00-08:00 2024-12-09T21:27:00-08:00 2024-12-09T21:27:00-08:00 2024-12-10T07:30:00-08:00 Actual Update Met Expected Moderate Likely Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Northern Blue Mountains of Oregon; Foothills of the Northern Blue Mountains of Oregon; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington SAME 041021 SAME 041055 SAME 041065 SAME 041049 SAME 041059 SAME 041061 SAME 041063 SAME 053005 SAME 053021 SAME 053039 SAME 053071 SAME 053013 UGC ORZ041 UGC ORZ044 UGC ORZ502 UGC ORZ507 UGC WAZ028 UGC WAZ029 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 100527 CCA NWSheadline DENSE FOG ADVISORY NOW IN EFFECT UNTIL NOON PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.COR.KPDT.FG.Y.0020.000000T0000Z-241210T2000Z/ eventEndingTime 2024-12-10T20:00:00+00:00

* WHAT...For the Air Stagnation Advisory, 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 less than one mile in dense fog. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until noon MST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T22:27:00-07:00 2024-12-09T22:27:00-07:00 2024-12-09T22:27:00-07:00 2024-12-10T12:15:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Upper Treasure Valley; Upper Weiser River; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 016001 SAME 016039 SAME 016003 SAME 041045 UGC IDZ012 UGC IDZ014 UGC IDZ033 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 100527 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON MST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.FG.Y.0018.000000T0000Z-241210T1900Z/ eventEndingTime 2024-12-10T19:00:00+00:00

* WHAT...Visibility at 1 mile or less with areas of quarter mile or less as well as areas of freezing fog. * WHERE...Lower Columbia Basin of Oregon and Washington, Eastern Columbia River Gorge of Oregon, Northern Blue Mountains of Oregon, Foothills of the Northern Blue Mountains of Oregon, and Foothills of the Blue Mountains of Washington. * WHEN...Until noon PST Tuesday. * IMPACTS...Low visibility and areas of freezing fog could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T21:27:00-08:00 2024-12-09T21:27:00-08:00 2024-12-09T21:27:00-08:00 2024-12-10T07:30:00-08:00 Actual Update Met Expected Moderate Likely Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Northern Blue Mountains of Oregon; Foothills of the Northern Blue Mountains of Oregon; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington SAME 041021 SAME 041055 SAME 041065 SAME 041049 SAME 041059 SAME 041061 SAME 041063 SAME 053005 SAME 053021 SAME 053039 SAME 053071 SAME 053013 UGC ORZ041 UGC ORZ044 UGC ORZ502 UGC ORZ507 UGC WAZ028 UGC WAZ029 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 100527 CCA NWSheadline DENSE FOG ADVISORY NOW IN EFFECT UNTIL NOON PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.COR.KPDT.FG.Y.0020.000000T0000Z-241210T2000Z/ eventEndingTime 2024-12-10T20:00:00+00:00

* WHAT...For the Air Stagnation Advisory, 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 less than one mile in dense fog. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until noon MST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Air Stagnation Advisory 2024-12-09T22:27:00-07:00 2024-12-09T22:27:00-07:00 2024-12-09T22:27:00-07:00 2024-12-10T12:15:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Upper Treasure Valley; Upper Weiser River; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 016001 SAME 016039 SAME 016003 SAME 041045 UGC IDZ012 UGC IDZ014 UGC IDZ033 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 100527 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON MST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0003.000000T0000Z-241212T2100Z/ eventEndingTime 2024-12-12T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cc2f108361d56bdb5b9b7c5b912486006c82a1de.001.1,2024-12-09T03:14:00-07:00

* 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. * WHERE...Portions of southwest and west central Idaho and northeast and southeast Oregon. * WHEN...Until 2 PM MST /1 PM PST/ Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-09T22:27:00-07:00 2024-12-09T22:27:00-07:00 2024-12-09T22:27:00-07:00 2024-12-10T12:15:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Boise Mountains; Camas Prairie; Owyhee Mountains; Harney County; Baker County; Malheur County SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016015 SAME 016025 SAME 016039 SAME 016073 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ013 UGC IDZ028 UGC IDZ029 UGC ORZ061 UGC ORZ062 UGC ORZ063 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 100527 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST /1 PM PST/ THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0003.000000T0000Z-241212T2100Z/ eventEndingTime 2024-12-12T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cc2f108361d56bdb5b9b7c5b912486006c82a1de.002.1,2024-12-09T03:14:00-07:00

* WHAT...Visibility one quarter to one half mile in areas of dense fog and localized freezing fog. * WHERE...Southwest Interior. * WHEN...Until 10 AM PST Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of sub-freezing temperatures into Tuesday morning may cause localized freezing fog. Dense Fog Advisory 2024-12-09T20:11:00-08:00 2024-12-09T20:11:00-08:00 2024-12-09T20:11:00-08:00 2024-12-10T10:00:00-08:00 Actual Alert Met Expected Moderate Likely Southwest Interior SAME 053041 SAME 053067 UGC WAZ504 AWIPSidentifier NPWSEW WMOidentifier WWUS76 KSEW 100411 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KSEW.FG.Y.0005.241210T0411Z-241210T1800Z/ eventEndingTime 2024-12-10T18:00:00+00:00

* WHAT...Visibility one quarter to one half mile in dense freezing fog. * WHERE...Harrington, Ritzville, Badger Mountain Road, Coulee City, Odessa, Wilbur, Waterville, Creston, Mansfield, and Grand Coulee. * WHEN...Until noon PST Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous. In addition, below freezing temperatures could result in slick roadways. Dense Fog Advisory 2024-12-09T20:09:00-08:00 2024-12-09T20:09:00-08:00 2024-12-09T20:09:00-08:00 2024-12-10T07:00:00-08:00 Actual Alert Met Expected Moderate Likely Upper Columbia Basin; Waterville Plateau SAME 053001 SAME 053017 SAME 053025 SAME 053043 SAME 053047 UGC WAZ035 UGC WAZ044 AWIPSidentifier NPWOTX WMOidentifier WWUS76 KOTX 100409 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KOTX.FG.Y.0014.241210T0409Z-241210T2000Z/ eventEndingTime 2024-12-10T20:00:00+00:00

* WHAT...Visibility at 1 mile or less with areas of quarter mile or less * WHERE...Lower Columbia Basin of Oregon and Washington, Eastern Columbia River Gorge of Oregon between Arlington and Boardman, Northern Blue Mountains of Oregon, primarily along the I-84 Corridor, Foothills of the Northern Blue Mountains of Oregon primarily along the I-84 Corridor, and Foothills of the Blue Mountains of Washington along Hwy 12. * WHEN...Until 10 PM PST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T18:53:00-08:00 2024-12-09T18:53:00-08:00 2024-12-09T19:00:00-08:00 2024-12-09T22:00:00-08:00 Actual Alert Met Expected Moderate Likely Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Northern Blue Mountains of Oregon; Foothills of the Northern Blue Mountains of Oregon; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington SAME 041021 SAME 041055 SAME 041065 SAME 041049 SAME 041059 SAME 041061 SAME 041063 SAME 053005 SAME 053021 SAME 053039 SAME 053071 SAME 053013 UGC ORZ041 UGC ORZ044 UGC ORZ502 UGC ORZ507 UGC WAZ028 UGC WAZ029 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 100253 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM PST THIS EVENING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KPDT.FG.Y.0020.241210T0300Z-241210T0600Z/ eventEndingTime 2024-12-10T06:00:00+00:00

* WHAT...Visibility at 1 mile or less with areas of quarter mile or less * WHERE...Lower Columbia Basin of Oregon and Washington, Eastern Columbia River Gorge of Oregon between Arlington and Boardman, Northern Blue Mountains of Oregon, primarily along the I-84 Corridor, Foothills of the Northern Blue Mountains of Oregon primarily along the I-84 Corridor, and Foothills of the Blue Mountains of Washington along Hwy 12. * WHEN...Until 10 PM PST this evening. * IMPACTS...Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T18:53:00-08:00 2024-12-09T18:53:00-08:00 2024-12-09T19:00:00-08:00 2024-12-09T22:00:00-08:00 Actual Alert Met Expected Moderate Likely Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Northern Blue Mountains of Oregon; Foothills of the Northern Blue Mountains of Oregon; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington SAME 041021 SAME 041055 SAME 041065 SAME 041049 SAME 041059 SAME 041061 SAME 041063 SAME 053005 SAME 053021 SAME 053039 SAME 053071 SAME 053013 UGC ORZ041 UGC ORZ044 UGC ORZ502 UGC ORZ507 UGC WAZ028 UGC WAZ029 AWIPSidentifier NPWPDT WMOidentifier WWUS76 KPDT 100253 NWSheadline DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM PST THIS EVENING BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.NEW.KPDT.FG.Y.0020.241210T0300Z-241210T0600Z/ eventEndingTime 2024-12-10T06:00:00+00:00

* WHAT...For the Air Stagnation Advisory, 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, and Upper Weiser River. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until noon MST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Dense Fog Advisory 2024-12-09T19:30:00-07:00 2024-12-09T19:30:00-07:00 2024-12-09T19:30:00-07:00 2024-12-10T03:30:00-07:00 Actual Update Met Expected Moderate Likely Lower Treasure Valley; Upper Weiser River; Oregon Lower Treasure Valley SAME 016027 SAME 016045 SAME 016073 SAME 016075 SAME 016087 SAME 016003 SAME 041045 UGC IDZ012 UGC IDZ033 UGC ORZ064 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 100230 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THURSDAY... ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL NOON MST TUESDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.FG.Y.0018.000000T0000Z-241210T1900Z/ eventEndingTime 2024-12-10T19:00:00+00:00

* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of southwest and west central Idaho and northeast and southeast Oregon. * WHEN...Until 2 PM MST /1 PM PST/ Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Air Stagnation Advisory 2024-12-09T19:30:00-07:00 2024-12-09T19:30:00-07:00 2024-12-09T19:30:00-07:00 2024-12-10T03:30:00-07:00 Actual Update Met Expected Moderate Likely West Central Mountains; Boise Mountains; Camas Prairie; Owyhee Mountains; Harney County; Baker County; Malheur County SAME 016003 SAME 016045 SAME 016085 SAME 016087 SAME 016015 SAME 016025 SAME 016039 SAME 016073 SAME 041025 SAME 041001 SAME 041045 UGC IDZ011 UGC IDZ013 UGC IDZ028 UGC IDZ029 UGC ORZ061 UGC ORZ062 UGC ORZ063 AWIPSidentifier NPWBOI WMOidentifier WWUS75 KBOI 100230 NWSheadline AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST /1 PM PST/ THURSDAY BLOCKCHANNEL EAS BLOCKCHANNEL NWEM BLOCKCHANNEL CMAS VTEC /O.CON.KBOI.AS.Y.0003.000000T0000Z-241212T2100Z/ eventEndingTime 2024-12-12T21:00:00+00:00 expiredReferences w-nws.webmaster@noaa.gov,urn:oid:2.49.0.1.840.0.cc2f108361d56bdb5b9b7c5b912486006c82a1de.002.1,2024-12-09T03:14:00-07:00