It was rain that wouldn't quit. A weather system fueled by warm moisture streaming in from the Atlantic Ocean on Oct. 3 and 4 relentlessly dumped between one and two feet of rain across most of South Carolina. The result was rivers topping their banks and dams bursting. Catastrophic flooding followed across most of the state, which has left residents in some areas without power or clean drinking water.
US East Coast
Twelve tornado sightings reported to NOAA yesterday were associated with severe thunderstorms extending from the Texas Gulf coast, through Oklahoma and Kansas. The GPM core observatory satellite had a good look at this area of severe weather on April 17, 2015 at 0003 UTC (April 16, 2015 at 7:03 PM CDT). A precipitation analysis using GPM's Microwave Imager (GMI) shows that some of these severe storms were dropping rain at a rate of over 86 mm (about 3.4 inches) per hour.
One of the first storms observed by the NASA/JAXA GPM Core Observatory on March 17, 2014, in the eastern United States revealed a full range of precipitation, from rain to snow.