Friday, July 17, 2009

WATCHES: Severe Thunderstorm Watch Number 595

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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