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NOAA Current Watches-OR

Air Stagnation Advisory issued December 7 at 4:58AM MST until December 7 at 5:00PM MST by NWS Boise ID

2 weeks 1 day ago
* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility 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 5 PM MST this afternoon. 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 7 at 4:58AM MST until December 7 at 11:00AM MST by NWS Boise ID

2 weeks 1 day ago
* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility 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 5 PM MST this afternoon. 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

Winter Weather Advisory issued December 7 at 4:57AM MST until December 8 at 5:00AM MST by NWS Boise ID

2 weeks 1 day ago
* WHAT...Mixed precipitation expected. Total snow accumulations up to one inch. Freezing rain possible which may cause slick roads. Ice accumulations under 0.10 inch. * WHERE...Lower Treasure Valley Zones, and Malheur County. * WHEN...From 5 PM MST /4 PM PST/ this afternoon to 5 AM MST /4 AM PST/ Sunday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.
NWS

Dense Fog Advisory issued December 6 at 11:54PM PST until December 7 at 9:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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 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 Dense Fog Advisory, until 9 AM PST Saturday. For the Air Stagnation Advisory, until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
NWS

Air Stagnation Advisory issued December 6 at 11:54PM PST until December 7 at 4:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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 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 Dense Fog Advisory, until 9 AM PST Saturday. For the Air Stagnation Advisory, until 4 AM PST Saturday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.
NWS

Air Stagnation Advisory issued December 6 at 11:54PM PST until December 7 at 4:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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.
NWS

Winter Weather Advisory issued December 6 at 11:38PM PST until December 8 at 4:00PM PST by NWS Portland OR

2 weeks 2 days ago
* WHAT...Snow expected above 3000 feet. Total snow accumulations 6 to 10 inches. Winds gusting as high as 40 mph. * WHERE...In Oregon, North Oregon Cascades. In Washington, South Washington Cascades. * WHEN...From 4 PM Saturday to 4 PM PST Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Snow levels start off high Saturday morning at over 9000 ft before lowering to around 5000 ft Saturday afternoon and then down to 3000 ft Saturday night. Snow levels will then remain around 3000 ft through Sunday night. The period of heaviest snowfall is expected to occur late Saturday night through Sunday morning.
NWS

Winter Weather Advisory issued December 6 at 9:50PM PST until December 8 at 4:00PM PST by NWS Pendleton OR

2 weeks 2 days ago
...LIGHT FREEZING RAIN, MOUNTAIN SNOW EXPECTED THIS WEEKEND... .A system moving across our region will bring areas of rain and some light freezing rain to portions of the lower slopes of the eastern Washington Cascades as well as the Kittitas Valley on Saturday. Then on Sunday, areas of moderate snowfall will begin to fall across the Washington Cascades as well as the northern Blue Mountains of both Washington and Oregon. * WHAT...Snow expected. Total snow accumulations of 5 to 9 inches. Winds gusting as high as 40 mph. * WHERE...In Oregon, Northern Blue Mountains of Oregon. In Washington, Northwest Blue Mountains. * WHEN...From 4 PM Saturday to 4 PM PST Sunday. * IMPACTS...Periods of moderate and heavy snow will combine with low visibilities to create difficult driving conditions.
NWS

Dense Fog Advisory issued December 6 at 9:06PM PST until December 8 at 9:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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 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 Dense Fog Advisory, until 9 AM PST Sunday. 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. * ADDITIONAL DETAILS...Fog will gradually thin Saturday morning, with improving visibility after 8 am.
NWS

Air Stagnation Advisory issued December 6 at 9:06PM PST until December 7 at 4:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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 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 Dense Fog Advisory, until 9 AM PST Sunday. 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. * ADDITIONAL DETAILS...Fog will gradually thin Saturday morning, with improving visibility after 8 am.
NWS

Air Stagnation Advisory issued December 6 at 9:06PM PST until December 7 at 4:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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...Poor air quality may cause issues for people with respiratory problems.
NWS

Winter Weather Advisory issued December 6 at 2:09PM PST until December 8 at 4:00PM PST by NWS Pendleton OR

2 weeks 2 days ago
...LIGHT FREEZING RAIN, MOUNTAIN SNOW EXPECTED THIS WEEKEND... .A system moving across our region will bring areas of rain and some light freezing rain to portions of the lower slopes of the eastern Washington Cascades as well as the Kittitas Valley on Saturday. Then on Sunday, areas of moderate snowfall will begin to fall across the Washington Cascades as well as the northern Blue Mountains of both Washington and Oregon. * WHAT...Snow expected. Total snow accumulations of 4-6 inches. Winds gusting as high as 40 mph. * WHERE...In Oregon, Northern Blue Mountains of Oregon. In Washington, Northwest Blue Mountains. * WHEN...From 4 PM Saturday to 4 PM PST Sunday. * IMPACTS...Travel could be difficult due to periods of moderate to heavy snow.
NWS

Air Stagnation Advisory issued December 6 at 2:47PM MST until December 7 at 5:00PM MST by NWS Boise ID

2 weeks 2 days 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 in valleys. * WHERE...Portions of south central, southwest, and west central Idaho and northeast and southeast Oregon. * WHEN...Until 5 PM MST /4 PM PST/ Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
NWS

Air Stagnation Advisory issued December 6 at 2:47PM MST until December 7 at 5:00PM MST by NWS Boise ID

2 weeks 2 days ago
* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. * WHERE...Treasure Valley Zones and the Weiser Basin. * WHEN...For the Air Stagnation Advisory, until 5 PM MST Saturday. For the Dense Fog Advisory, until 11 AM MST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog and snow flurries could produce patchy black ice and slick roads.
NWS

Dense Fog Advisory issued December 6 at 2:47PM MST until December 7 at 11:00AM MST by NWS Boise ID

2 weeks 2 days ago
* WHAT...For the Air Stagnation Advisory in valleys, an extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. * WHERE...Treasure Valley Zones and the Weiser Basin. * WHEN...For the Air Stagnation Advisory, until 5 PM MST Saturday. For the Dense Fog Advisory, until 11 AM MST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog and snow flurries could produce patchy black ice and slick roads.
NWS

Winter Weather Advisory issued December 6 at 2:10PM MST until December 8 at 5:00AM MST by NWS Boise ID

2 weeks 2 days ago
* WHAT...Snow and freezing rain expected. Total snow accumulations up to one inch and ice accumulations less than one tenth of an inch. * WHERE...Lower Treasure Valley Zones, and northern Malheur County including Highways 20 and 26. * WHEN...From 5 PM MST /4 PM PST/ Saturday to 5 AM MST /4 AM PST/ Sunday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.
NWS

Air Stagnation Advisory issued December 6 at 12:24PM PST until December 7 at 4:00AM PST by NWS Portland OR

2 weeks 2 days ago
* 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.
NWS

Air Stagnation Advisory issued December 6 at 12:24PM PST until December 7 at 4:00AM PST by NWS Portland OR

2 weeks 2 days ago
* WHAT...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...Until 4 AM PST Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
NWS
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