Tuesday, February 21, 2012

South Flash Flooding, Storm Risk Thursday, Friday

Feb 21, 2012; 11:35 AM ET
The storms Thursday into Friday have the potential to bring a couple of inches of rain on top of the recent 2-4 inches of rain this past weekend. (Photos.com image)
For the second time in less than a week, the risk of flash flooding and locally damaging thunderstorms will focus in the South.
During Thursday, showers and thunderstorms will affect part of South, coastal and northeastern Texas to the lower Mississippi Valley.
Where downpours linger or repeat over already saturated ground, the risk of flash flooding is greatest. However, brief urban flooding is possible in just about anywhere in the I-10 to I-20 zone with this event.
According to Severe Weather Expert Dan Kottlowski, "The scope of the severe thunderstorms will depend on the strength of an approaching disturbance from the west, as well as whether or not a stable layer in the atmosphere erodes."
"At this point, it appears the greatest risk with this event is for flash and urban flooding, localized damaging wind gusts and a few incidents of hail," Kottlowski said
.
 

If the stable layer breaks, then the thunderstorms have the potential to become much more violent and could bring a few tornadoes.
"The threat of damaging storms is not likely to develop until late Thursday or Thursday evening, right at the tail-end of daytime heating," Kottlowski added.
A cold front will then push the same flash flooding and severe thunderstorm threat area farther east Friday.

 

During Friday, the risk area is likely to stretch from the northeastern Gulf Coast to the central and southeastern Carolinas.
In addition to the risk of severe weather and flash flooding, the event will bring another round of needed rainfall from portions of Florida to the Carolinas where soil conditions ranging from abnormally dry to exceptional drought continue
.

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