June 30, 2017

Moderate AQI in California, Texas, and Mid-Atlantic States

Moderate AQI PM2.5 and Ozone levels were measured in California, Texas, and the northern Mid-Atlantic States as shown in the Airnow animation. Smoke from wildfires burning in the Southwestern US maybe behind these Moderate AQIs. Ceilometer observations in Baltimore show the colapse of yesterday's boundary layer, clouds aloft and the evolution of today's boundary layer. Boundary layer reached max heights of 1800 meters after a late rise/growth that started around 15:00 UTC (11:00am local time). According to NOAA's Hazard Mapping System Fire and Smoke Product, satellite retrievals observed light smoke covering much of the Southwestern and South Central US from Utah and Arizona eastward to Missouri and Arkansas. Additional wildfires in Arizona also were producing smoke moving to the east and northeast. Also we see evidence of smoke attributed to a number of fires in Northwestern Canada and eastern Alaska has been transported southeastward across a portion of western and southwestern Canada and southward into the US over western Montana, eastern Washington and eastern Oregon, much of Idaho, northern Nevada, northern Utah, and southwestern Wyoming. From there the smoke spread southeastward and eastward over northern Colorado where it eventually merged with the smoke from the Southwestern US fires.

Posted by Ruben Delgado at June 30, 2017 11:59 PM
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