

698 

WWUS20 KWNS 171843

SEL5

SPC WW 171843

NCZ000-CWZ000-180200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 595

NWS STORM PREDICTION CENTER NORMAN OK

245 PM EDT FRI JUL 17 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF EASTERN NORTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 245 PM UNTIL

1000 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 45

STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES WEST NORTHWEST

OF GOLDSBORO NORTH CAROLINA TO 55 MILES EAST OF NEW BERN NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 592...WW 593...WW 594...



DISCUSSION...TSTMS INTENSIFYING ALONG LEE TROUGH SITUATED OVER THE

PIEDMONT SHOULD CONTINUE TO STRENGTHEN WHILE PROGRESSING EWD TOWARD

THE COAST.  THE COMBINATION OF A HOT...MODERATE UNSTABLE AIR MASS

/MLCAPE OF 1500-2000 J PER KG/ AND STRENGTHENING VERTICAL SHEAR

SHOULD SUPPORT THE EVOLUTION OF ORGANIZED STORM CLUSTERS AND/OR LINE

SEGMENTS CAPABLE OF DAMAGING WINDS AND 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 500. MEAN STORM

MOTION VECTOR 27030.





...MEAD/IMY

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