Monday, July 17, 2017

More fires and a little more smoke

Numerous fires burning in eastern WA, the largest of which is the Snake River fire near Pomeroy. Air quality in the Lewis- Clark valley has been poor over the last two days and is likely to hover between Moderate and USG over the next few days.

The NOAA HMS Fire and Smoke satellite image shows light smoke from Canadian and Alaskan wildfires over Washington state, but most of it remains aloft. Not expecting strong downward mixing this week so very unlikely that we'll have to inhale much of it. And no, it wont be dense enough to cause spectacular sunsets.

Light north winds are expected across the Columbia Basin today, meaning smoke is likely to drift into the basin. Winds will be driven by daytime heating/ nighttime cooling through Wednesday so not expecting smoke to travel very far from its original sources. Air quality should be mostly Good statewide, except close to fires when periods of Moderate and USG can be expected overnight, with some clearing during the day.

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