May 21, 2010

Moderate Air Quality Levels Throughout Country; Smoke from Central American and Canadian fires reaching into U.S.

PM2.5 levels (top left, courtesy AIRNow) were Code Yellow (Moderate) in the Northeast, Southern, Pacific Southwest regions today. Code Orange PM2.5 levels were observed in Pennsylvania later in the day. Ozone levels were mostly good throughout the country today. In the afternoon, Code Orange (Unhealthy for Sensitive Groups) ozone levels were observed in southern California.

NOAA's Hazard Mapping System (HMS, top right) reports fires from the Central American countries has spread up through Texas and into surrounding states. Smoke from the fires in Canada and the Plain States region continues today. The smoke plume from these fires extends out into the Atlantic. The smoke was over top the Northeastern states of New York, Connecticut, Massachusetts, Vermont, and New Hampshire. Smoke from these fires has been covered over the past couple of days on the blog. The MODIS Terra AOD map (IDEA, bottom left) shows high AOD values over central Canada in the region of the fires. Elsewhere in the country, smoke was observed on the coasts of South Carolina and Florida. Two large smoke plumes can be observed over Alaska. Smoke from fires in Louisiana can be observed as well.

Posted by Jaime Compton at May 21, 2010 11:58 PM
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