February 4, 2017

LIGHT SMOKE IN SOUTH; CLOUD COVERAGE MAKES HIGH AQI SOURCE DIFFICULT TO DETERMINE

The AirNow AQI loop shown in the top left shows mostly good air quality today. The only exception was some code orange (unhealthy for sensitive groups) in Idaho and Utah, and a short period of code red (unhealthy) in Utah. The source of this AQI elevation is difficult to determine because of cloud coverage, but the VIIRS image (top right) shows that there were several fires (shown as red dots) and a bit of residual smoke (purple) and dust (yellow), probably not enough to cause code red AQI, but it surely contributed. The HMS smoke product (bottom) shows some scattered, light smoke in the Mississippi Valley from fires in that area, as well as some light smoke in south Florida near Lake Okeechobee headed southeast.

Posted by ben48 at February 4, 2017 10:34 PM
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