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282 

WWUS20 KWNS 241938

SEL8

SPC WW 241938

NCZ000-VAZ000-250300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 108

NWS STORM PREDICTION CENTER NORMAN OK

335 PM EDT SAT MAR 24 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL NORTH CAROLINA

       SOUTHERN VIRGINIA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 335 PM UNTIL

1100 PM EDT.



TORNADOES...HAIL TO 2.5 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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHWEST OF

DANVILLE VIRGINIA TO 10 MILES SOUTH SOUTHWEST OF FAYETTEVILLE

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 104...WW 105...WW

106...WW 107...



DISCUSSION...SUPERCELL TORNADO POTENTIAL MAY INCREASE ACROSS

PORTIONS OF SRN VA AND THE NC PIEDMONT OVER THE NEXT FEW HOURS AS

LARGE UPPER STORM SYSTEM SPREADS EAST AND COLD FRONT MOVES INTO THE

REGION. MODERATELY UNSTABLE AIRMASS WAS ALREADY SUPPORTING SEVERE

STORMS AND LOW LEVEL FLOW ACROSS THE WATCH AREA HAS BACKED TO MORE

ELY COMPONENT APPARENTLY IN RESPONSE TO 1) SURFACE PRESSURE FALLS

OVER WRN NC/VA...AND 2) WARM FRONT/OUTFLOW BOUNDARY BCMG BETTER

DEFINED FROM NEAR THE NC/VA BORDER SEWD TO THE NC COASTAL PLAIN.

STORMS MOVING NEAR THIS BOUNDARY WHERE LOW LEVEL SHEAR WILL BE

ENHANCED WILL HAVE THE POTENTIAL TO ACQUIRE STRONG LOW LEVEL

ROTATION. STORMS TRACKING NEAR OR ALONG THE BOUNDARY FOR ANY

SUBSTANTIAL AMOUNT OF TIME WILL ALSO POSE A THREAT FOR A FEW

TORNADOES. VERY LARGE HAIL WILL ALSO BE POSSIBLE WITH

SUPERCELLS...ALONG WITH SCATTERED DAMAGING WINDS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

450. MEAN STORM MOTION VECTOR 24030.





...CARBIN

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