PDS Mid & East TN
Posted by JAC on 4/27/2011, 5:14 pm



URGENT - IMMEDIATE BROADCAST REQUESTED
  TORNADO WATCH NUMBER 238
  NWS STORM PREDICTION CENTER NORMAN OK
  335 PM CDT WED APR 27 2011
 
  THE NWS STORM PREDICTION CENTER HAS ISSUED A
  TORNADO WATCH FOR PORTIONS OF
 
         MIDDLE AND EASTERN TENNESSEE
 
  EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 335 PM UNTIL MIDNIGHT CDT.
 
  ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
 
  DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
  THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
  POSSIBLE IN THESE AREAS.
 
  THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
  MILES NORTH AND SOUTH OF A LINE FROM 70 MILES WEST SOUTHWEST OF
  NASHVILLE TENNESSEE TO 25 MILES EAST OF KNOXVILLE TENNESSEE.  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 232...WW 233...WW
  234...WW 235...WW 236...
 
  DISCUSSION...A VERY UNSTABLE AIRMASS IS EXPECTED TO GRADUALLY
  DEVELOP NORTHWARD INTO TN THIS EVENING IN THE WAKE OF A MORNING MCS.
  WITHIN AN INCREASINGLY SHEARED ENVIRONMENT...ACCENTUATED BY
  LONG/CURVING LOW LEVEL HODOGRAPHS...SUPERCELLS CAPABLE OF TORNADOES
  /SOME STRONG/ WILL BE AN INCREASING/MORE WIDESPREAD CONCERN INTO
  THIS EVENING.
 
  AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
  SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
  WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
  550. MEAN STORM MOTION VECTOR 24040.
 
 
  ...GUYER/HART
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High Risk today N AL, SE TN, N GA - JAC, 4/27/2011, 5:46 am
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