May 4, 2017

A sprawling storm system brought severe weather, tornadoes, and flooding to parts of the United States and blizzard conditions to others.

March 22, 2017

Hot and dry conditions across the Southern Plains proved perfect for the spread of large wildfires across the prairie in March.

September 10, 2013

A heat wave struck the Midwest in late August and early September 2013. This map shows the hottest temperatures in the United States between August 1 and September 8, 2013, based on data from NOAA's Real-Time Mesoscale Analysis.