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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 442

NWS STORM PREDICTION CENTER NORMAN OK

1255 PM EDT SUN JUL 1 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NORTH CAROLINA

       SOUTH CENTRAL VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1255 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST

NORTHWEST OF GREENSBORO NORTH CAROLINA TO 20 MILES NORTH

NORTHEAST OF CAPE HATTERAS NORTH CAROLINA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 441. WATCH NUMBER 441 WILL NOT

BE IN EFFECT AFTER 1255 PM EDT.



DISCUSSION...A SMALL MCS NEAR NC/VA BORDER WILL MOVE INTO AN

INCREASINGLY UNSTABLE ENVIRONMENT THIS AFTERNOON...WITH MLCAPE AOA

4000 J/KG AND WEAKENING CONVECTIVE INHIBITION.  GIVEN THE UNUSUALLY

STEEP LAPSE RATE PROFILES AND THE SRN EDGE OF THE 30-40 KT MIDLEVEL

FLOW...POTENTIAL WILL EXIST FOR UPSCALE GROWTH OF THE CLUSTER AND A

SWATH OF DAMAGING WINDS/LARGE HAIL THROUGH THE AFTERNOON.



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 600. MEAN STORM

MOTION VECTOR 29035.





...THOMPSON

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