RRAIN Washington  
WA State Weather Alerts

East Slopes of the Washington Cascades
Eastern Columbia River Gorge of Washington
Foothills of the Blue Mountains of Washington
Kittitas Valley
Lower Columbia Basin of Washington
Simcoe Highlands
Yakima Valley

Air Stagnation Advisory issued December 11 at 11:58AM PST until December 14 at 10:00AM PST by NWS
Published: 2017-12-11T11:58:00-08:00 | Updated: 2017-12-11T11:58:00-08:00
...STAGNANT AIR CONDITIONS CONTINUE INTO FRIDAY... ...AREAS OF DENSE FREEZING FOG FOR THE FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS AND PORTIONS OF NORTH CENTRAL AND CENTRAL OREGON UNTIL NOON TUESDAY... .An upper level ridge will persist over the Pacific Northwest. This ridge will cause air movement to be limited over large

Adams
Asotin
Chelan
Douglas
Ferry
Garfield
Grant
Lincoln
Okanogan
Pend Oreille
Spokane
Stevens
Whitman

Air Stagnation Advisory issued December 11 at 9:48AM PST until December 15 at 10:00AM PST by NWS
Published: 2017-12-11T09:48:00-08:00 | Updated: 2017-12-11T09:48:00-08:00
...AIR STAGNATION ADVISORY EXTENDED THROUGH FRIDAY MORNING... Our stagnant weather pattern is not expected to change until the arrival of a weak frontal system on Friday. Until then, a strong temperature inversion will remain over Washington and Idaho. Winds will also be weak heightening the potential for the build up of air pollution.

Admiralty Inlet Area
Bellevue and Vicinity
Bremerton and Vicinity
East Puget Sound Lowlands
Eastern Strait of Juan de Fuca
Everett and Vicinity
Hood Canal Area
Seattle and Vicinity
Southwest Interior
Tacoma Area
Western Skagit County
Western Whatcom County

Air Stagnation Advisory issued December 11 at 9:38AM PST until December 14 at 2:00PM PST by NWS
Published: 2017-12-11T09:38:00-08:00 | Updated: 2017-12-11T09:38:00-08:00
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Dry conditions, light winds and poor mixing has lead to stagnant conditions in the interior lowlands. Stagnant conditions will trap pollutants near the surface which will lead to deteriorating air quality.

Lower Columbia and I - 5 Corridor in Cowlitz County

Air Stagnation Advisory issued December 11 at 9:18AM PST until December 14 at 2:00PM PST by NWS
Published: 2017-12-11T09:18:00-08:00 | Updated: 2017-12-11T09:18:00-08:00
...STAGNANT AIR CONDITIONS EXPECTED INTO NEXT WEEK... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Air quality may deteriorate due to an extended period of stagnant air conditions. * TIMING...through Thursday afternoon.

Greater Vancouver Area

Air Stagnation Advisory issued December 11 at 9:18AM PST until December 14 at 2:00PM PST by NWS
Published: 2017-12-11T09:18:00-08:00 | Updated: 2017-12-11T09:18:00-08:00
...STAGNANT AIR CONDITIONS EXPECTED INTO NEXT WEEK... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THURSDAY... * AIR QUALITY...Air quality may deteriorate due to an extended period of stagnant air conditions. * TIMING...through Thursday afternoon.