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It’s like combining Seattle Smoke Season with Seattle’s Coldest Day in 23 Years — Air stagnation advisory issued

Socked in — from the Space Needle

It’s like Seattle Smoke Season™ meets Seattle’s Coldest Day in 23 Years™.

The National Weather Service has issued an “AIR STAGNATION ADVISORY” through noon Wednesday due to a continued run of “mid and upper level high pressure” that has Seattle and the region socked in with cold, smoggy fog.

“Poor air quality may cause issues for people with respiratory problems,” NWS warns, adding, “prolonged periods of stagnant air can hold pollutants close to the ground where people live and breathe.”

The pattern has been in place for about a week and the advisory could be extended with “very little change” in the immediate forecast.

And the days of cold, smoggy fog could carry on. The next sign of major changes in the high pressure system likely won’t begin to play out until next week.

As of Tuesday morning, Seattle air sensors were reporting readings ranging from “good” to “moderate” with the worst scores being tallied in the central city. Check the the Puget Sound Clean Air Agency and the Department of Ecology sites for latest readings.

UPDATE 1/26/2022 9:40 AM: The advisory is still planned to be lifted by noon though the sm-foggy will persist overnight and in the mornings with hopes for some afternoon clearing and a new system entering the region, the National Weather Service says:

High pressure will continue to result in foggy nights and mornings, with some clearing in the afternoons through Thursday. A more active weather pattern will then take shape at the end of the week and through the weekend. A frontal system will mark the return to rain Saturday night and Sunday, with unsettled conditions continuing through the middle of next week.

 

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