January 12, 2017

Smoke continues over Florida, somewhat elevated PM 2.5 in Mid-West

Code Yellow (Moderate) levels of PM 2.5 were seen in the Plains States, the Mississippi Valley, the Rocky Mountain States, and the Pacific Northwest (AirNow, top left). Code Orange (Unsafe for Sensitive Groups) levels were seen in Montana and South Dakota. These elevated levels of PM 2.5 were not due to smoke, as there was only smoke seen over Florida today due to prescribed fires in the state (HMS, top right). Some of the smoke over Florida can be seen in NASA's MODIS Terra satellite images, bottom left.

January 9, 2017

Northern Biomass Burning and Florida fire plumes

Today we observe little to moderate amounts of PM across the nation with a majority of the AOD concentrated in the Rocky Mountain states and the Southeast regions of the US as seen in the AirNow image below (top left). In the Copernicus image below (top right) the area of PM in the plain states correlates directly with the biomass burning depicted in this image, however, at a rather small amount. The number of fires and the origin of fires is shown in the HMS image below (bottom left) and the level of PM produced can be seen in the Terra image below (bottom right). Florida fires produced light smoke plumes that traveled northwest.

January 7, 2017


AirNow's average AQI product (left) shows mostly moderate aerosol optical depth levels. The only significant code orange (unhealthy for sensitive groups) exists in Montana. The HMS product shows several fires on the coast of Texas producing smoke that is moving south. The cause/purpose of the fires is unknown, but the plumes produced are small enough to be considered almost insignificant.

January 6, 2017

Good Air Quality with No Visible Smoke

As seen in AirNow's Daily AQI, there was fairly good air quality across the nation today. There were pockets of moderate (Code Yellow) AQI levels dotted across the eastern U.S. with larger areas spanning the Pacific Northwest region. The Pacific Northwest also saw levels of aerosols that reached into unhealthy for sensitive groups (Code Orange) and even an area of unhealthy (Code Red) aerosol concentration in Southern Oregon. These levels, however, do not seem to be due to fires as NOAA's HMS Analysis Team reported that there was no visible smoke.

January 5, 2017

Prescribed fires in Florida continue to spread light smoke

Air quality was mostly good today, with Code Yellow (Moderate) levels appearing in the North West and the Plains States (AirNow, top left). There were also Code Orange (Unsafe for Sensitive Groups) levels seen in Idaho and Montana. NOAA's HMS map, top right, shows plums of slight smoke over Florida from prescribed fires. The smoke can be seen in the map of Florida, bottom left.

January 2, 2017

Clear day for the new year

Clear day for the new year with very little amounts of PM 2.5 observed along the Great Lakes region towards the Northeast as seen in the AirNow image below, left. Remnant smoke was seen throughout the day in the gulf of Mexico and towards the Yucatan region due to fire activity in Mexico. Agricultural fires in Florida are seen throughout the day but produced a very insignificant amount of PM 2.5, HMS image, right.

December 31, 2016


AirNow's Average PM2.5 map (top left) shows mostly good and moderate AQI, with a few exceptions in the northern Rocky Mountains states, where several areas were unhealthy for sensitive groups (orange). Florida experienced several wildfires shown by the HMS product in the top right. These fires produced a light plume of smoke visible in the NASA WorldView image (bottom). The fires are currently inactive, but the residual smoke is moving northwest.