Thursday, May 7, 2009

WATCHES: Severe Thunderstorm Watch Number 259

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

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