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Mesoscale Discussion 350 |
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MESOSCALE DISCUSSION 0350
NWS STORM PREDICTION CENTER NORMAN OK
0349 PM CDT MON APR 04 2011
AREAS AFFECTED...ERN KY/TN...SRN WV...SWRN VA
CONCERNING...SEVERE THUNDERSTORM WATCH 94...
VALID 042049Z - 042145Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 94
CONTINUES.
LEADING EDGE OF LONG-LIVED/FAST-MOVING/EXTENSIVE QLCS EXTENDED FROM
GREENUP COUNTY KY TO FRANKLIN COUNTY TN AS OF 2030Z. 50-70 KT
FORWARD PROPAGATION SUGGESTS THIS LINE WILL APPROACH THE ERN EXTENT
OF WW 94 AROUND 23Z. THIS FORWARD SPEED SHOULD DECREASE SOMEWHAT AS
UPPER-LEVEL FLOW BACKS AND THE LINE OUTRUNS THE RICHER MOIST AXIS
ACROSS MS/WRN AL INTO MIDDLE TN. NEVERTHELESS...THE QUICK MOTION OF
THE QLCS /SUPPORTED BY THE VERY STRONG LOW-LEVEL FLOW/ WILL MAINTAIN
POTENTIAL FOR RELATIVELY WIDESPREAD DAMAGING WINDS. GIVEN THIS AND
THAT GREATEST SURFACE PRESSURE FALLS ARE NOW CENTERED ACROSS ERN
KY/TN...TORNADOES CANNOT BE RULED OUT. HOWEVER...THIS THREAT SHOULD
BE TEMPERED BY LOWER PW VALUES AND RELATIVELY LARGER SURFACE
TEMPERATURE/DEW POINT SPREADS COMPARED TO FARTHER W.
..GRAMS.. 04/04/2011
ATTN...WFO...RNK...RLX...GSP...MRX...JKL...FFC...ILN...OHX...
HUN...
LAT...LON 35128604 37068448 37838370 38168340 38658283 38778215
38628134 38398118 37238164 35078327 34508426 34488511
34938606 35128604
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