Friday, March 2, 2012

Particularly Dangerous Situation Tornado Watch #62


SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 62
   NWS STORM PREDICTION CENTER NORMAN OK
   420 PM EST FRI MAR 2 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          EASTERN KENTUCKY
          SOUTHEAST OHIO
          WESTERN VIRGINIA
          WESTERN AND CENTRAL WEST VIRGINIA
   
   EFFECTIVE THIS FRIDAY AFTERNOON FROM 420 PM UNTIL MIDNIGHT EST.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 1.5 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 75 STATUTE
   MILES EAST AND WEST OF A LINE FROM 70 MILES SOUTH SOUTHEAST OF
   JACKSON KENTUCKY TO 25 MILES EAST NORTHEAST OF PARKERSBURG WEST
   VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
   
   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 57...WW 58...WW 59...WW
   60...WW 61...
   
   DISCUSSION...MULTIPLE SUPERCELLS WITH A HISTORY OF TORNADOES OVER
   CNTRL KY ARE EXPECTED TO SPREAD EWD INTO THE WATCH AREA LATE THIS
   AFTERNOON INTO TONIGHT WITHIN EXPANDING WARM SECTOR OF INTENSIFYING
   EXTRATROPICAL CYCLONE.  THOUGH REGION WILL REMAIN ON THE ERN
   ENVELOPE OF STRONGER INSTABILITY...THE PRESENCE OF VERY STRONG
   VERTICAL SHEAR AND ESTABLISHED SUPERCELL STRUCTURES INDICATES A HIGH
   LIKELIHOOD FOR SIGNIFICANT TORNADOES.  SOME CONSOLIDATION OF
   NRN-MOST SUPERCELLS INTO A FAST-MOVING BOW ECHO SYSTEM IS POSSIBLE
   WHICH WOULD SIGNIFICANTLY ENHANCE THE POTENTIAL FOR WIDESPREAD
   DAMAGING WINDS.  LARGE HAIL WILL ALSO BE POSSIBLE WITH ANY SUSTAINED
   SUPERCELLS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   450. MEAN STORM MOTION VECTOR 25045.

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