

229 

WWUS20 KWNS 072210

SEL9

SPC WW 072210

NCZ000-SCZ000-CWZ000-080500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 259

NWS STORM PREDICTION CENTER NORMAN OK

610 PM EDT THU MAY 7 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN NORTH CAROLINA

       NORTHEAST SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 610 PM

UNTIL 100 AM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EITHER SIDE OF A LINE FROM 30 MILES NORTH OF CAPE

HATTERAS NORTH CAROLINA TO 30 MILES SOUTH SOUTHWEST OF FLORENCE

SOUTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 258...



DISCUSSION...SCTD TSTMS...SOME WEAK SUPERCELLS...EXPECTED TO PERSIST

FOR THE NEXT FEW HOURS IN AREA OF LOW LVL CONFLUENCE BENEATH

MODERATE MID LVL WLY FLOW OVER THE CAROLINA CSTL PLN.  MAIN THREAT

SHOULD BE SVR HAIL.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50

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

MOTION VECTOR 26030.





...CORFIDI

