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Particularly Dangerous Situation (PDS) Tornado Watch 17
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WW0017 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 17
   NWS STORM PREDICTION CENTER NORMAN OK
   1135 AM CST THU JAN 10 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          MUCH OF WESTERN AND NORTHERN ALABAMA
          PARTS OF SOUTHEAST LOUISIANA
          PARTS OF EASTERN MISSISSIPPI
          MUCH OF MIDDLE TENNESSEE
          COASTAL WATERS
   
   EFFECTIVE THIS THURSDAY MORNING AND EVENING FROM 1135 AM UNTIL
   700 PM CST.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 2 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 75 STATUTE
   MILES EAST AND WEST OF A LINE FROM 40 MILES WEST SOUTHWEST OF
   BOOTHVILLE LOUISIANA TO 50 MILES NORTHEAST OF NASHVILLE
   TENNESSEE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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 16...
   
   DISCUSSION...WARM SECTOR HAS CONTINUED TO DESTABILIZE AS SHEAR
   PROFILES CONTINUE TO INTENSIFY ACROSS MUCH OF WATCH AREA.  DISCRETE
   SUPERCELLS ARE DEVELOPING AHEAD OF THE MAIN AREA OF SEVERE OVER WRN
   MS/TN.  AS 500MB TROUGH AND 100KT WIND MAX ROTATE TOWARD AREA THIS
   AFTERNOON...TORNADIC SUPERCELLS ARE EXPECTED TO INCREASE IN NUMBER
   AND DEVELOP EWD ACROSS AL AND NWD INTO MID TN.  THERE IS A THREAT OF
   LONG LIVED SUPERCELLS INCLUDING STRONG TORNADOES.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24040.
   
   
   ...HALES
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