Dense Canadian Smoke Veil Moves Southward Over Washington State
There are many Canadian imports nosotros value, such every bit maple syrup too woods products, exactly 1 nosotros would rather produce without: fume from major wildfires inwards British Columbia. And a major force southward of Canadian fume is occurring every bit I write this.
The fume was obvious inwards the MODIS satellite icon unopen to noon, amongst depression clouds beneath the smoke, westward of the Cascade crest.
Most of these clouds later on burned off, amongst lots of fume withal aloft (see pic for the GOES satellite unopen to four PM)
The fume was quite dense exactly was mainly aloft, leaving air lineament decent close the surface. But the heaven is rattling hazy too the Sun has that weakened yellow/red await to it. For example, the latest icon from the Seattle PanoCam shows the fume clearly.
And those hiking at Sunrise on Mt. Rainier did non run into bluish skies.
Yesterday inwards contrast had very, rattling clear skies. What happened?
The passage of an upper marking depression too trough.
Prior to the depression passage, in that place was lots of Canadian fume aloft, since southerly menstruum precedes the upper marking depression (see my previous blog). As the depression passed yesterday, the winds aloft outset were first southwesterly/westerly, bringing inwards build clean air from off the Pacific). But every bit the depression passed by, the winds became northerly aloft which moved fume from fires inwards BC southward (see upper level, 500 hPa, nearly 18,000 ft, map at v AM Sunday, winds are shown yesteryear the air current barbs)
And the upper marking map for tomorrow morning time (11 AM Monday) shows that the northerly menstruum is non over.
As many of yous know yesteryear now, I am a neat enthusiast for the wonderful experimental HRRR-SMOKE model run yesteryear NOAA ESRL. Here is the vertical full of fume total for 2 PM Dominicus from HRRR-Smoke. Red is rattling smoky. You tin run into lots of fume moving southward into NW Washington, amongst cleaner air over northern Oregon. The California fume wa heading to the E too so northeast, missing us.
By nine AM Monday, substantial fume is over all of WA Earth too CA fume is moving northward 1 time again into Oregon.
And yesteryear belatedly Mon evening, the 2 fume sources combine, producing substantial haze over the entire Northwest.
And straight off the bad news: the winds over the Cascades volition larn easterly tomorrow too eastern WA fume volition force westward over the Cascades, amongst fume pushing downwards to the surface (see surface fume forecast for tomorrow at 7PM). Our decent air lineament may last over---so if yous are vulnerable, get got the appropriate precautions.
The fume was obvious inwards the MODIS satellite icon unopen to noon, amongst depression clouds beneath the smoke, westward of the Cascade crest.
Most of these clouds later on burned off, amongst lots of fume withal aloft (see pic for the GOES satellite unopen to four PM)
The fume was quite dense exactly was mainly aloft, leaving air lineament decent close the surface. But the heaven is rattling hazy too the Sun has that weakened yellow/red await to it. For example, the latest icon from the Seattle PanoCam shows the fume clearly.
And those hiking at Sunrise on Mt. Rainier did non run into bluish skies.
Yesterday inwards contrast had very, rattling clear skies. What happened?
The passage of an upper marking depression too trough.
Prior to the depression passage, in that place was lots of Canadian fume aloft, since southerly menstruum precedes the upper marking depression (see my previous blog). As the depression passed yesterday, the winds aloft outset were first southwesterly/westerly, bringing inwards build clean air from off the Pacific). But every bit the depression passed by, the winds became northerly aloft which moved fume from fires inwards BC southward (see upper level, 500 hPa, nearly 18,000 ft, map at v AM Sunday, winds are shown yesteryear the air current barbs)
And the upper marking map for tomorrow morning time (11 AM Monday) shows that the northerly menstruum is non over.
As many of yous know yesteryear now, I am a neat enthusiast for the wonderful experimental HRRR-SMOKE model run yesteryear NOAA ESRL. Here is the vertical full of fume total for 2 PM Dominicus from HRRR-Smoke. Red is rattling smoky. You tin run into lots of fume moving southward into NW Washington, amongst cleaner air over northern Oregon. The California fume wa heading to the E too so northeast, missing us.
By nine AM Monday, substantial fume is over all of WA Earth too CA fume is moving northward 1 time again into Oregon.
And yesteryear belatedly Mon evening, the 2 fume sources combine, producing substantial haze over the entire Northwest.
And straight off the bad news: the winds over the Cascades volition larn easterly tomorrow too eastern WA fume volition force westward over the Cascades, amongst fume pushing downwards to the surface (see surface fume forecast for tomorrow at 7PM). Our decent air lineament may last over---so if yous are vulnerable, get got the appropriate precautions.
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