

000 

WWUS20 KWNS 281915

SEL2

SPC WW 281915

NCZ000-VAZ000-CWZ000-290000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 242

NWS STORM PREDICTION CENTER NORMAN OK

315 PM EDT MON APR 28 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHEASTERN NORTH CAROLINA

       SOUTHEASTERN VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 315 PM UNTIL 800

PM EDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH OF NORFOLK

VIRGINIA TO 65 MILES SOUTH SOUTHWEST OF ELIZABETH CITY NORTH

CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



DISCUSSION...THUNDERSTORMS...INCLUDING DISCRETE

SUPERCELLS...CONTINUE TO INCREASE THIS AFTERNOON AHEAD OF STRONG

UPPER TROUGH AND ASSOCIATED SURFACE TROUGH MOVING ACROSS CENTRAL

NC/VA.  AIR MASS IS ONLY WEAKLY UNSTABLE...BUT WITH STRONG LOW LEVEL

SHEAR...PERSISTENT SURFACE PRESSURE FALLS AND LOW LCL WITHIN VERY

MOIST BOUNDARY LAYER...THREATS OF ISOLATED TORNADOES AND/OR DAMAGING

WINDS WILL CONTINUE UNTIL FRONT MOVES OFFSHORE THIS EVENING.



AVIATION...TORNADOES AND 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

400. MEAN STORM MOTION VECTOR 24030.





...EVANS

