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Mesoscale Discussion 0212
NWS Storm Prediction Center Norman OK
0326 PM CST Sat Feb 25 2017
Areas affected...Eastern Virginia across the Delmarva
Concerning...Severe Thunderstorm Watch 39...
Valid 252126Z - 252300Z
The severe weather threat for Severe Thunderstorm Watch 39
SUMMARY...Severe storms with hail, localized wind damage and perhaps
an isolated/weak tornado remain possible this afternoon.
DISCUSSION...A cold front continues to push rapidly eastward across
PA and NY, with a slightly slower motion across MD and VA. Storms
associated with northern areas of the front have congealed into a
squall line, but still with embedded stronger cores. Some cells even
show signs of strong rotation at times, and thus a brief tornado may
still occur in these areas where effective SRH is 200-300 m2/s2.
Farther south across MD and VA, supercells have been producing
mainly large hail, and storms remain discrete. A hail and localized
wind threat should persist for a few more hours until storms move
LAT...LON 37097545 36957640 36517693 36537868 37487744 38117702
39387637 40137624 40567608 40627558 40467499 39957466
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