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WWUS20 KWNS 262320

SEL9

SPC WW 262320

DCZ000-GAZ000-MDZ000-NCZ000-SCZ000-VAZ000-WVZ000-CWZ000-270700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 729

NWS STORM PREDICTION CENTER NORMAN OK

720 PM EDT TUE OCT 26 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       DISTRICT OF COLUMBIA

       EXTREME NORTHEAST GEORGIA

       WESTERN MARYLAND

       WESTERN NORTH CAROLINA

       UPSTATE SOUTH CAROLINA

       WESTERN AND NORTHERN VIRGINIA

       THE EASTERN WEST VIRGINIA PANHANDLE

       COASTAL WATERS



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 720 PM

UNTIL 300 AM EDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

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



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF

MARTINSBURG WEST VIRGINIA TO 10 MILES SOUTH SOUTHWEST OF ANDERSON

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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 725...WW 726...WW

727...WW 728...



DISCUSSION...SCATTERED SEVERE STORMS WILL CONTINUE IN A LOOSE BAND

FROM SC NEWD INTO WRN NC AND WRN VA THIS EVENING...IN AN ENVIRONMENT

FAVORING SUPERCELLS WITH THE POTENTIAL FOR A FEW TORNADOES.  FARTHER

N AND LATER...A BAND OF ASCENT ASSOCIATED WITH THE SQUALL LINE WHICH

WEAKENED OVER THE APPALACHIANS WILL ENCOUNTER A MORE MOIST/UNSTABLE

ENVIRONMENT ACROSS VA/MD.  HERE...STRONG VERTICAL SHEAR COULD

SUPPORT THE FORMATION OF ADDITIONAL BOWING SEGMENTS AND EMBEDDED

SUPERCELLS...WITH THE POTENTIAL FOR DAMAGING WINDS AND A COUPLE OF

TORNADOES TONIGHT.



AVIATION...TORNADOES AND 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 450.

MEAN STORM MOTION VECTOR 24035.





...THOMPSON

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