June 21, 2018

Plains States smoke spreads towards West

PM 2.5 levels were mostly low today, with Code Yellow (Moderate) levels being seen in the Southeast, the Mississippi Valley, the Southern Plains States, and California (AirNow, top left). The elevated PM 2.5 in the Pacific Southwestern region and the Plains States was most likely due to smoke in this general region, as seen in NOAA's HMS map, top right. The smoke in this area ranged from heavy to light plumes of smoke. This smoke could be seen in NASA's MODIS Terra images, bottom left. Ozone levels, however, were somewhat higher, with up to Code Red (Unsafe) levels being seen in the Pacific Southwest, the Plains States, and the Rocky Mountain States.

Posted by mglover at June 21, 2018 9:36 PM
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