

000 

WWUS20 KWNS 212208

SEL3

SPC WW 212208

NCZ000-CWZ000-220500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 633

NWS STORM PREDICTION CENTER NORMAN OK

610 PM EDT TUE AUG 21 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN NORTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 610 PM

UNTIL 100 AM EDT.



HAIL TO 1 INCH 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 115

STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES EAST

NORTHEAST OF ROCKY MOUNT NORTH CAROLINA TO 15 MILES SOUTH OF

FAYETTEVILLE NORTH CAROLINA.  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.



OTHER WATCH INFORMATION...CONTINUE...WW 629...WW 630...WW

631...WW 632...



DISCUSSION...FORWARD-PROPAGATING SQLN ASSOCIATED WITH REMNANT

CIRCULATION OF TS ERIN EXPECTED TO CONTINUE E INTO THE SAND HILLS

AND CSTL PLN OF NC LATER THIS EVENING.  MOIST YET DEEPLY-MIXED

ENVIRONMENT AHEAD OF LINE SUGGESTS CONTINUED LIKELIHOOD LOCALIZED

DOWNBURSTS WITH  FORWARD-PROPAGATING BOWING SEGMENTS.  ACTIVITY MAY

WEAKEN SOMEWHAT UPON ENCOUNTERING SHALLOW MARITIME AIR MASS OVER FAR

ERN NC LATER TONIGHT.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

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

VECTOR 27030.





...CORFIDI

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