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151 

WWUS20 KWNS 272347

SEL6

SPC WW 272347

MDZ000-NCZ000-VAZ000-CWZ000-280600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 736

NWS STORM PREDICTION CENTER NORMAN OK

745 PM EDT WED OCT 27 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN MARYLAND

       EXTREME NORTHERN NORTH CAROLINA

       SOUTH CENTRAL AND SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 745 PM

UNTIL 200 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 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH OF SOUTH HILL

VIRGINIA TO 20 MILES EAST NORTHEAST OF PATUXENT RIVER MARYLAND.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 733. WATCH NUMBER 733 WILL NOT BE IN EFFECT AFTER

745 PM EDT. CONTINUE...WW 734...WW 735...



DISCUSSION...ISOLATED SEVERE STORMS CONTINUE MOVING ENEWD OVER

SOUTHEAST VA...WITH ADDITIONAL STORMS INCREASING IN A LINE FROM

EXTENDING SWWD OVER SOUTH CENTRAL VA.  AIR MASS REMAINS MOIST AND

MODERATELY UNSTABLE WITHIN AN ENVIRONMENT CHARACTERIZED BY 35-45 KT

DEEP LAYER SHEAR...WHICH WILL MAINTAIN THREAT FOR SUPERCELL

STRUCTURES. A SSWLY LOW LEVEL JET IS FORECAST TO INTENSIFY THIS

EVENING INCREASING LOW LEVEL SHEAR AND SRH WITH CONTINUED THREAT FOR

A FEW TORNADOES.



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 23030.





...WEISS

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