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Radar valid at 500 am PDT, Aug 8th 2017

alert legend

WAZ001-503-504-506-507-509>517-555-556-558-559-567>569-081200-
San Juan County-Western Whatcom County-Southwest Interior-
Western Skagit County-Everett and Vicinity-Tacoma Area-
Admiralty Inlet Area-Hood Canal Area-Lower Chehalis Valley Area-
Olympics-Eastern Strait of Juan de Fuca-
Western Strait of Juan De Fuca-North Coast-Central Coast-
East Puget Sound Lowlands-Bellevue and Vicinity-
Seattle and Vicinity-Bremerton and Vicinity-
Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
1018 AM PDT Mon Aug 7 2017


...AN AIR QUALITY ALERT CONTINUES THROUGH NOON THURSDAY...

The strong upper level ridge over the region will maintain the dry
stable air mass over Western Washington through at least Thursday.
Fortunately, an inversion aloft over the region is keeping most
of the smoke over Western Washington aloft. Weak low level onshore
flow last night and this morning brought some marine air inland
to areas around the Strait of Juan De Fuca and over the southwest
interior, which has helped to improve air quality. Not much
marine air reached the central Puget Sound area leaving most sites
in the moderate category.

Weak low level onshore flow will return the next few nights which
should continue to yield better air quality north and south of
Puget Sound, leaving slightly worse air quality around Puget
Sound.

The smoke and hazy skies will continue to plague Western
Washington for the next few days. A change to southwest flow
aloft on Thursday may start to push the smoke out of the area.

People with respiratory ailments like asthma can find more
information including current air quality at the following
websites...

wasmoke.blogspot.com
airnow.gov

Additional regional information...

Puget Sound area...pscleanair.org
Southwest Washington...swcleanair.org
Olympic region...orcaa.org
Northwest region...nwcleanairwa.gov

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