January 8, 2013

Unhealthy AQI continues in Utah, with hopes of winter storm moving in Thurs. to help. Dust blowing across southern California.

The first image below, courtesy NOAA HMS, shows the fire locations across the United States. The red dots correspond to active fires, and the grey areas are plumes. There are very light plumes in the Southeast region. These fires have been burning steadily for the past few days. There are also patches of fires in the Mississippi Valley and Great Lakes region. The image below, courtesy GASP MODIS (Terra satellite), shows the AOD image for the country today. You can see that most of these raised values correspond to more optically thick areas, which correspond to the fires and smoke debris throughout the nation. You can see raised values off the western coast of California that may be due to dust blowing.

The first animation below shows the image for EPA AIRNOW AQI values for the Southwest region. The unhealthy values in northern Utah have been stagnant for the past few days as seen in recent posts. A winter storm is predicted to hit the region by mid-day Thursday, hopefully ending the Wasatch Front's most recent spell of inversion-enhanced smog and "Red," or unhealthy air quality alerts. The next image is the NOAA surface dust (ug/m3) national forecast. Some of this has been picked up in the Modis Terra image above.

Posted by John Sullivan at January 8, 2013 8:42 PM
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