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000 

WWUS20 KWNS 231644

SEL6

SPC WW 231644

MDZ000-NCZ000-VAZ000-CWZ000-240000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 736

NWS STORM PREDICTION CENTER NORMAN OK

1245 PM EDT WED JUL 23 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN MARYLAND

       LARGE PART OF EASTERN NORTH CAROLINA

       A LARGE PART OF SOUTHEASTERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL

800 PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 110

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF

FAYETTEVILLE NORTH CAROLINA TO 15 MILES NORTH NORTHWEST OF

WALLOPS VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 735...



DISCUSSION...AIR MASS HAS BECOME VERY UNSTABLE WITH MLCAPES AOA 2000

J/KG ACROSS MUCH OF WATCH AREA.  WITH LITTLE REMAINING

CINH...THUNDERSTORMS WILL INCREASE IN NUMBER AND INTENSITY ACROSS

THE WATCH WITH POTENTIAL FOR DAMAGING WINDS BEING THE PRIMARY THREAT

GIVEN THE 25-30 KT OF SHEAR AND STEEP LOW LEVEL LAPSE RATES.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 23025.





...HALES

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