SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 891
   NWS STORM PREDICTION CENTER NORMAN OK
   920 PM CST TUE NOV 23 2004
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          NORTHERN ALABAMA
          MIDDLE TENNESSEE
   
   EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 920 PM
   UNTIL 400 AM CST.
   
   TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
   TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
   OF A LINE FROM 55 MILES NORTH OF HUNTSVILLE ALABAMA TO 50 MILES
   WEST SOUTHWEST OF BIRMINGHAM ALABAMA.
   
   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 887...WW 888...WW 889...WW
   890...
   
   DISCUSSION...MESOSCALE CIRCULATION CENTER EMBEDDED WITHIN/PRECEDING
   RAIN SHIELD OVER NRN MS EXPECTED TO CONTINUE ENE INTO NRN AL/MIDDLE
   TN LATER TONIGHT. COMBINATION OF SLOWLY STRENGTHENING WIND FIELD
   OVER REGION ...AND GRADUAL BOUNDARY LAYER AIR MASS RECOVERY...WILL
   SUPPORT THREAT FOR A FEW EMBEDDED SUPERCELLS.  THESE MAY YIELD SHORT
   LIVED TORNADOES AND/OR DAMAGING WIND GUSTS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
   GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
   MEAN STORM MOTION VECTOR 24035.
   
   
   ...CORFIDI