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000 

WWUS20 KWNS 151719

SEL3

SPC WW 151719

MDZ000-NCZ000-VAZ000-CWZ000-160100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 833

NWS STORM PREDICTION CENTER NORMAN OK

120 PM EDT FRI AUG 15 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST MARYLAND

       WESTERN AND CENTRAL NORTH CAROLINA

       CENTRAL AND SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 120 PM UNTIL 900

PM EDT.



HAIL TO 1.5 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES WEST SOUTHWEST

OF CHARLOTTE NORTH CAROLINA TO 10 MILES NORTH OF SALISBURY

MARYLAND.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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.



DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INCREASE IN

COVERAGE AND INTENSITY THIS AFTERNOON ACROSS PARTS OF NC/VA/MD WHERE

MODERATE INSTABILITY AND STRONG HEATING ARE PRESENT.  DESPITE WEAK

MID LEVEL LAPSE RATES...FAVORABLE DEEP LAYER VERTICAL SHEAR AND LOW

LEVEL THERMODYNAMICS WILL POSE A THREAT OF ISOLATED SEVERE STORMS

CAPABLE OF DAMAGING WINDS AND PERHAPS HAIL.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 26025.





...HART

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