Monday, September 07, 2020

Smokey In The West

Labor Day weekend has been a very smokey one in the West, with several large wildfires burning. Satellite image above from yesterday shows the huge plume from the Creek fire in California, as well plumes from several other smaller fires from southern California to Oregon. Photo below shows Half Dome obscured in Yosemite. Second below shows smoke from Cameron Peak fire west of Ft. Collins reaching to Denver. My son in Loveland reported yesterday that ash was falling from the thick smoke and coating cars.

This morning's 500 mb analysis (above from SPC) shows the impact that bad heights at Phoenix and Chihuahua, Mexico, are continuing to have on the analyses.

The morning sounding plot from TWC (below) shows nearly adiabatic lapse rates extending above 500 mb. Note also that a well mixed, old BL extends from 600 to above 500 mb. 

Another hot day in store for our area. However, the 06 UTC GEFS plumes for temperature indicate some cooling in the week ahead. The GEFS also indicates very slight chances for light showers at midweek. 

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