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Air Stagnation Advisory issued December 9 at 5:24PM MST until December 12 at 2:00PM MST by NWS Boise ID

2 weeks ago
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. 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. * WHERE...Lower Treasure Valley Zones, and Upper Weiser River. * WHEN...For the Dense Fog Advisory, until noon MST Tuesday. For the Air Stagnation Advisory, until 2 PM MST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
NWS

Air Stagnation Advisory issued December 9 at 5:24PM MST until December 12 at 2:00PM MST by NWS Boise ID

2 weeks ago
* 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.
NWS

Dense Fog Advisory issued December 9 at 5:24PM MST until December 10 at 12:00PM MST by NWS Boise ID

2 weeks ago
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. 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. * WHERE...Lower Treasure Valley Zones, and Upper Weiser River. * WHEN...For the Dense Fog Advisory, until noon MST Tuesday. For the Air Stagnation Advisory, until 2 PM MST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
NWS

Beach Hazards Statement issued December 9 at 1:52PM PST until December 10 at 4:00PM PST by NWS Medford OR

2 weeks ago
* 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
NWS

Air Stagnation Advisory issued December 9 at 11:03AM MST until December 12 at 2:00PM MST by NWS Boise ID

2 weeks ago
* 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.
NWS

Air Stagnation Advisory issued December 9 at 11:03AM MST until December 12 at 2:00PM MST by NWS Boise ID

2 weeks ago
* WHAT...Visibility has improved but patches of dense fog will continue until early afternoon. 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 southeast Oregon. * WHEN...Until 2 PM MST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
NWS

Special Weather Statement issued December 9 at 9:53AM PST by NWS Spokane WA

2 weeks ago
Patchy dense freezing fog with near zero visibility has been reported in the Columbia Basin this morning. Fog is particularly dense along Interstate 90 around Ritzville, US-2 between Wilbur and Coulee City, and WA-243 from Vantage to Desert Aire. Expect rapid changes in visibility in this area. Use extra caution, reduce speeds, and allow extra travel time. Fog is expected to lift this afternoon.
NWS

Beach Hazards Statement issued December 9 at 2:27AM PST until December 10 at 4:00PM PST by NWS Medford OR

2 weeks 1 day ago
* 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
NWS

Air Stagnation Advisory issued December 9 at 3:14AM MST until December 12 at 2:00PM MST by NWS Boise ID

2 weeks 1 day ago
* 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...In the valleys of southwest Idaho and southeast Oregon below 4000 feet. * WHEN...Until 2 PM MST /1 PM PST/ Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
NWS

Air Stagnation Advisory issued December 9 at 3:14AM MST until December 12 at 2:00PM MST by NWS Boise ID

2 weeks 1 day ago
* 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 quarter mile in dense fog. * WHERE...Portions of southwest Idaho and southeast Oregon. This includes Interstate 84 from Boise to Ontario and Highway 95 from Weiser to Council. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until 11 AM MST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
NWS

Dense Fog Advisory issued December 9 at 3:14AM MST until December 9 at 11:00AM MST by NWS Boise ID

2 weeks 1 day ago
* 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 quarter mile in dense fog. * WHERE...Portions of southwest Idaho and southeast Oregon. This includes Interstate 84 from Boise to Ontario and Highway 95 from Weiser to Council. * WHEN...For the Air Stagnation Advisory, until 2 PM MST Thursday. For the Dense Fog Advisory, until 11 AM MST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
NWS

Frost Advisory issued December 9 at 1:29AM PST until December 9 at 8:00AM PST by NWS Medford OR

2 weeks 1 day ago
* WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...South Central Oregon Coast. This includes Reedsport, Lakeside, Coos Bay, Bandon, Langlois, Port Orford and surrounding areas. * WHEN...Until 8 AM PST this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
NWS

Beach Hazards Statement issued December 8 at 10:11PM PST until December 10 at 4:00PM PST by NWS Medford OR

2 weeks 1 day ago
* 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
NWS

Frost Advisory issued December 8 at 9:12PM PST until December 9 at 8:00AM PST by NWS Medford OR

2 weeks 1 day ago
* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...South Central Oregon Coast. This includes Reedsport, Lakeside, Coos Bay, Bandon, Langlois, Port Orford and surrounding areas. * WHEN...From 3 AM to 8 AM PST Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
NWS

Dense Fog Advisory issued December 8 at 8:22PM PST until December 9 at 12:00PM PST by NWS Portland OR

2 weeks 1 day ago
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central and Southern Willamette Valley, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Portland West Hills and Chehalem Mountain, Inner Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, Inner Vancouver Metro, and South Washington Cascade Foothills. * WHEN...Until noon PST Monday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of fog and dense fog is forming across the south and central Willamette Valley this evening, where skies have cleared. As clouds break up elsewhere, will see areas of fog and dense fog form overnight.
NWS

Dense Fog Advisory issued December 8 at 8:22PM PST until December 9 at 9:00AM PST by NWS Portland OR

2 weeks 1 day ago
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...South Washington and North and Central Oregon Coast. * WHEN...Until 9 AM PST Monday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...As skies clear overnight, fog will be forming. Expect areas of fog to be mainly in the lowlands along rivers and near bays. As light east winds pick up Monday morning, fog will thin and dissipate.
NWS

Dense Fog Advisory issued December 8 at 8:22PM PST until December 9 at 12:00PM PST by NWS Portland OR

2 weeks 1 day ago
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central and Southern Willamette Valley, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Portland West Hills and Chehalem Mountain, Inner Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, Inner Vancouver Metro, and South Washington Cascade Foothills. * WHEN...Until noon PST Monday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas of fog and dense fog is forming across the south and central Willamette Valley this evening, where skies have cleared. As clouds break up elsewhere, will see areas of fog and dense fog form overnight.
NWS

Dense Fog Advisory issued December 8 at 8:22PM PST until December 9 at 9:00AM PST by NWS Portland OR

2 weeks 1 day ago
* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...South Washington and North and Central Oregon Coast. * WHEN...Until 9 AM PST Monday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...As skies clear overnight, fog will be forming. Expect areas of fog to be mainly in the lowlands along rivers and near bays. As light east winds pick up Monday morning, fog will thin and dissipate.
NWS