Severe weather threat for today – 4/19/09

The Mid-South is once again under a SLIGHT RISK of severe weather for this afternoon and early this evening and Severe Thunderstorm Watches are in effect until 7pm for eastern Arkansas and 8pm for west Tennessee and north Mississippi.

At 2:25pm on MWN StormView Radar, a line of strong to marginally severe thunderstorms extends south through north Mississippi roughly along I-55 from DeSoto County south about 75 miles. Another batch of showers and embedded thunderstorms is located over east AR from west of Jonesboro to east of Stuttgart. All cells are moving east at about 35 mph and further development is likely as the afternoon progresses.

All of these storms are firing up in response to some clearing of the clouds behind this morning’s rain, but still ahead of a cold front that will move through this evening. The clouds breaking apart allow additional surface-based heating to occur, which destabilizes the atmosphere. The cold front serves as the lifting mechanism to cause the storms to form in the buoyant air. Once the front passes, the severe weather threat will end. The main threat with these storms will be the potential for large hail, though a damaging wind gust is possible as well. The tornado threat is very low with these storms.

Stay with MemphisWeather.net for the latest on this potential severe weather threat.

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