Today air quality was in the Code Yellow (Moderate) range across large portions of the Northeast, Mid-Atlantic, and Southeast, as well as scattered readings across the Great Lakes, Pacific Northwest and Rocky States (top left). The highest PM2.5 readings today were observed in southern North Carolina, peaking in Code Orange (Unhealthy for Sensitive Groups) range. The HMS analysis team reports several fires across Florida and several associated plumes of smoke (top right). A single fire was also observed across southern North Carolina, which could have contributed to the raised PM2.5 readings there. However, the MODIS sensor onboard the Terra satellite, could not demonstrate clear AOD observations in this region due to expansive cloud cover (bottom left). The NAAPS aerosol model indicates air quality in these regions could continue to be poor, as elevated sulfate across Great Lakes, Mid-Atlantic, Northeast by Wednesday, ranging between 2-8 micrograms per cubic meter are forecast. Finally, March came in like a lion this year for parts of the Mid-West, Mid-Atlantic, and Northeast with strong winter storm bringing these regions to a standstill yet again. The same system that brought the West Coast it's record rainfall last week dumped several inches of snow across the aforementioned regions, and funneled in an Arctic air mass that caused temperatures to plummet to record levels for some areas tonight.