SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 150
   NWS STORM PREDICTION CENTER NORMAN OK
   1015 AM CDT MON APR 11 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          SOUTHEAST ARKANSAS
          WESTERN AND NORTHERN LOUISIANA
          WESTERN AND NORTHERN MISSISSIPPI
          EXTREME SOUTHEAST TEXAS
          COASTAL WATERS
   
   EFFECTIVE THIS MONDAY MORNING AND EVENING FROM 1015 AM UNTIL 700
   PM CDT.
   
   ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
   
   DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 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 80 STATUTE MILES
   EAST AND WEST OF A LINE FROM 35 MILES NORTH NORTHWEST OF GREENWOOD
   MISSISSIPPI TO 35 MILES SOUTH SOUTHWEST OF GALVESTON TEXAS.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU0).
   
   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...THIS TORNADO WATCH REPLACES SEVERE
   THUNDERSTORM WATCH NUMBER 149. WATCH NUMBER 149 WILL NOT BE IN
   EFFECT AFTER 1015 AM CDT. 
   
   DISCUSSION...TORNADO THREAT EXPECTED TO INCREASE THROUGH THE
   AFTERNOON OVER WW AREA AS SURFACE HEATING DESTABILIZES STRONGLY
   SHEARED/INCREASINGLY MOIST ENVIRONMENT AHEAD OF EXISTING CONVECTIVE
   BAND IN SE TX/WRN LA.  OTHER STORMS MAY FORM AHEAD OF CONVECTIVE
   BAND...IN ZONE OF GREATER  HEATING/LOW LEVEL CONFLUENCE CLOSER TO
   THE MS RIVER.  50-60 KT DEEP SSWLY SHEAR ABOVE MOIST...SELY LOW
   LEVEL FLOW WILL BE SUPPORTIVE OF LOW LEVEL STORM ROTATION.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
   GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
   MEAN STORM MOTION VECTOR 22035.
   
   
   ...CORFIDI