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Mesoscale Discussion 633 |
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MESOSCALE DISCUSSION 0633
NWS STORM PREDICTION CENTER NORMAN OK
0500 PM CDT WED APR 27 2011
AREAS AFFECTED...PORTIONS OF THE MID-ATLANTIC
CONCERNING...TORNADO WATCH 233...
VALID 272200Z - 272300Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 233 CONTINUES.
A REPLACEMENT OF WW 233 IS BEING CONSIDERED FOR THE PIEDMONT OF
N-CNTRL NC THROUGH CNTRL MD. TSTM COVERAGE HAS INCREASED TO THE SW
OF WW 233 AMIDST A SUPERCELL ENVIRONMENT CHARACTERIZED BY MLCAPE OF
1000 TO 2000 J/KG AND EFFECTIVE SHEAR AROUND 35 TO 45 KT. WITH THE
LOW-LEVEL WIND PROFILE FORECAST TO STRENGTHEN THROUGH THE
EVENING...TSTMS SHOULD REMAIN CAPABLE OF ALL SEVERE THREATS BEYOND
00Z...POTENTIALLY NECESSITATING A REPLACEMENT WW.
..GRAMS.. 04/27/2011
ATTN...WFO...PHI...AKQ...CTP...LWX...RAH...RNK...
LAT...LON 36227782 35877858 36077989 36677970 38787823 39407753
39747691 39787621 39487591 39217588 38187645 36547743
36227782
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