Monday, April 25, 2011

April 25: PDS Tornado Watch #2


URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 206
   NWS STORM PREDICTION CENTER NORMAN OK
   450 PM CDT MON APR 25 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          PARTS OF NORTHEAST ARKANSAS
          PARTS OF ILLINOIS
          SMALL PART OF SOUTHWEST INDIANA
          PARTS OF WESTERN KENTUCKY
          PARTS OF SOUTHEAST MISSOURI
          LARGE PART OF NORTHERN MISSISSIPPI
          WESTERN TENNESSEE
   
   EFFECTIVE THIS MONDAY AFTERNOON FROM 450 PM UNTIL MIDNIGHT CDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 2.5 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 80 STATUTE
   MILES EAST AND WEST OF A LINE FROM 70 MILES WEST SOUTHWEST OF
   OXFORD MISSISSIPPI TO 35 MILES EAST NORTHEAST OF CARBONDALE
   ILLINOIS.  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...CONTINUE...WW 201...WW 202...WW
   203...WW 204...WW 205...
   
   DISCUSSION...AS SURFACE LOW DEEPENS THIS EVENING NEWD TOWARD LOWER
   OH VALLEY...STRONG SHEAR PROFILES AND RAPID NWD DESTABILIZATION WILL
   TAKE PLACE NWD THRU THE WATCH.  THIS SUPPORTS CURRENT SUPERCELLS NOW
   IN AR TO DEVELOP RAPIDLY NEWD ACROSS THE WATCH WITH POTENTIAL FOR
   STRONG TORNADOES.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   550. MEAN STORM MOTION VECTOR 23035.

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