Northern Mexico, west Texas and the Texas panhandle, and Oklahoma experienced a huge sandstorm this afternoon. The MODIS Aqua image shows the blowing dust, both a light color brown over west Texas and Mexico and a golden brown over the Texas panhandle and Oklahoma, likely due to different color soils. The NOAA GASP product shows high AOD in the afternoon in the area though it screens some of the dust as cloud. PM2.5 levels peaked at 56 ug/m3 in El Paso (according to the Texas Commission on Environmental Quality), see the AIRNow animation for El Paso for the timing and air quality effects of the storm.
Most of the U.S. east of the Rockies plus the Pacific Northwest was cloudy today with good to moderate air quality conditions. California air quality was mostly good.Posted by Jill Engel-Cox at November 27, 2005 6:51 PM