

463 

WWUS20 KWNS 282004

SEL6

SPC WW 282004

NCZ000-SCZ000-CWZ000-290200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 536

NWS STORM PREDICTION CENTER NORMAN OK

400 PM EDT SAT JUL 28 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN NORTH CAROLINA

       NORTHEAST SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 400 PM UNTIL

1000 PM 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 45

STATUTE MILES EITHER SIDE OF A LINE FROM 35 MILES WEST OF MYRTLE

BEACH SOUTH CAROLINA TO 35 MILES NORTH NORTHWEST OF CAPE HATTERAS

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 535...



DISCUSSION...TSTMS NOW FORMING IN ERN SC ARE GROWING IN ZONE OF UPR

DIFLUENCE DOWNSTREAM FROM APPROACHING/AMPLIFYING UPR IMPULSE NOW

OVER THE OH VLY. THE STORMS ARE FORMING WITHIN AN AXIS OF DEEP/RICH

MOISTURE AND SUFFICIENT UNIDIRECTIONAL WSWLY MID/UPR LVL FLOW TO

SUPPORT STORM ORGANIZATION/SUSTENANCE. THE ACTIVITY MAY EVOLVE INTO

ONE OR TWO NE-MOVING CLUSTERS...WITH SMALL BOWING SEGMENTS POSING A

RISK FOR DMGG WIND.



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 550. MEAN STORM MOTION

VECTOR 25025.





...CORFIDI

