SWOMCD
SPC MCD 042013
NJZ000-PAZ000-DEZ000-VAZ000-MDZ000-DCZ000-WVZ000-OHZ000-KYZ000-INZ000-042115-
MESOSCALE DISCUSSION 1383
NWS STORM PREDICTION CENTER NORMAN OK
0313 PM CDT WED JUL 04 2007
AREAS AFFECTED...ERN INDIANA EASTWARD INTO DELMARVA/SERN PA AND NJ
CONCERNING...TORNADO WATCH 482...483...
VALID 042013Z - 042115Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 482...483...CONTINUES.
TORNADO WATCH CONTINUES FOR PORTIONS OF FAR SERN IND...SRN AND
CENTRAL OH EWD TO DELMARVA AND PA/NJ INTO THIS EVENING.
A CLUSTER OF STORMS WAS MOVING EWD THROUGH PORTIONS OF CENTRAL/SWRN
OH...AHEAD OF A SEWD MOVING SURFACE TROUGH AND AN MCV LOCATED IN
SERN INDIANA. ENVIRONMENT IS FAVORABLE FOR SEVERE STORMS...
INCLUDING ISOLATED TORNADOES.
FURTHER EAST...AN UPPER LEVEL TROUGH...WITH A 50-55 KT SPEED MAX IN
PA...EXTENDED FROM CENTRAL PA SWWD INTO WV. STORMS HAVE RECENTLY
INTENSIFIED AND INCREASED IN COVERAGE ACROSS NRN VA AND MD.
EFFECTIVE SHEAR AT 40 KT IS FAVORABLE FOR SUPERCELLS AND 1 KM SHEAR
AROUND 20 KT IS SUPPORTIVE OF TORNADOES. HOWEVER...HAIL SHOULD BE
THE MAIN THREAT AS ROTATING STORMS ENHANCE THE UPDRAFT STRENGTHS.
.IMY.. 07/04/2007
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PHI...BGM...AKQ...CTP...LWX...RNK...PBZ...RLX...CLE...JKL...ILN...LMK...IND...
39978532 40458236 40397821 40967583 40667489 39387483
37897593 38147988 38298253 38438510
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