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WWUS20 KWNS 272235

SEL8

SPC WW 272235

NCZ000-VAZ000-280500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 448

NWS STORM PREDICTION CENTER NORMAN OK

635 PM EDT SUN JUL 27 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  WESTERN NORTH CAROLINA

  SMALL PART OF SOUTHWESTERN VIRGINIA



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 635 PM

  UNTIL 100 AM EDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  ISOLATED VERY LARGE HAIL EVENTS TO 3 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

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

ASHEVILLE NORTH CAROLINA TO 65 MILES NORTH NORTHEAST OF HICKORY

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 445...WW 446...WW 447...



DISCUSSION...POTENTIAL EXISTS FOR SUPERCELLS IN WW 445 TO SURVIVE

PASSAGE THROUGH NARROW CORRIDOR OF RELATIVELY LOW-THETAE AIR MASS

OVER HIGHEST APPALACHIANS AND MOVE INTO FAVORABLY MOIST/UNSTABLE

ENVIRONMENT OF WRN PIEDMONT REGION...WHERE 50 KT EFFECTIVE-SHEAR

MAGNITUDES AND 200-300 J/KG EFFECTIVE SRH WILL JUXTAPOSE WITH

UPPER-60S/LOWER-70S F SFC DEW POINTS.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 30030.





...EDWARDS

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