June 15, 2017

Fires in Arizona continue, low levels of Ozone

Air quality today was mostly good, with only scarce Code Yellow (Moderate) levels of PM 2.5 seen in Texas, the Mid-Atlantic, Pacific Southwest, the Mississippi Valley, and the Rocky Mountain States (AirNow, top left). Some of the elevated levels of PM 2.5 seen in the Pacific Southwest and Texas were most likely caused by smoke coming from the Highline Fire in Arizona, which was also discussed in Tuesday's post. The fire currently spans 1,359 acres and counting. The Fire Officials in Arizona believe the fire was caused by lightning (InciWeb). The smoke coverage can be seen in NOAA's HMS map, top right. However, since there were mostly light plumes of smoke, it didn't affect air quality too much.

Ozone levels were also not too bad, with Mostly Code Yellow levels being seen, mostly in the Southern Rocky Mountain States and the Pacific Southwest, as seen in NOAA's ozone map, mid left. This area was most likely affected by ozone because of high temperatures in this area (weather.gov, mid right), and low wind speeds in this area, bottom left. There were not stagnant winds in this area, but the wind speeds were lower than the areas surrounding it, as seen in weather.gov's wind speed map, bottom left.

Posted by mglover at June 15, 2017 5:37 PM
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