NWS Louisville Reflectivity Cross-Section April 7, 2006

Areas of Excessive Rainfall and Severe Thunderstorms Friday

Heavy thunderstorms may bring areas of excessive rainfall and locally considerable flooding over parts of the Ozarks into the lower-Mississippi River Valley Friday and Saturday. Scattered severe thunderstorms may occur Friday from Montana into the central Plains, with hail and corridors of damaging winds possible. Read More >

NWS Doppler Radar (WSR-88D) Example Products

The image shows a reflectivity cross-section of a supercell thunderstorm on April 7, 2006 from the NWS Louisville Doppler radar. The storm is over 40,000 feet tall. It has a large core of very heavy rain and hail (red and pink colors) within it. A bounded weak echo region (BWER), which denotes the location of the storm's rotating updraft (mesocyclone), is evident. The anvil of the storm is located to the right of the main updraft core aloft, where lighter precipitation and ice crystals are located. A much weaker, smaller thunderstorm is located just to the left of the supercell.