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942 

WWUS20 KWNS 061734

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SPC WW 061734

NCZ000-SCZ000-VAZ000-CWZ000-070100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 848

NWS STORM PREDICTION CENTER NORMAN OK

135 PM EDT TUE SEP 6 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NORTH CAROLINA

       EASTERN SOUTH CAROLINA

       SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 135 PM UNTIL

900 PM EDT.



TORNADOES...HAIL TO 0.5 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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES WEST NORTHWEST OF

ROANOKE RAPIDS NORTH CAROLINA TO 15 MILES SOUTH SOUTHEAST OF

MYRTLE BEACH SOUTH 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 845...WW 846...WW 847...



DISCUSSION...MULTIPLE BANDS/CLUSTERS OF TSTMS WILL PERSIST THIS

AFTERNOON WITHIN A VERY MOIST AND MODERATELY UNSTABLE AIR MASS WITH

MLCAPE VALUES OF 1000-2000 J/KG.  WATCH AREA WILL RESIDE ALONG ERN

PERIPHERY OF STRONGER MID- AND HIGH-LEVEL WIND FIELD ATTENDANT TO

SRN APPALACHIANS UPPER SYSTEM.  WHEN COUPLED WITH 30-40 KT LOW-LEVEL

SLY FLOW...SUFFICIENT VERTICAL SHEAR EXISTS TO SUPPORT SUPERCELLS

AND BOWING STRUCTURES CAPABLE OF DAMAGING WINDS AND A FEW TORNADOES.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 21030.





...MEAD

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