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Tornado Watch 146
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WW0146 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Moderate
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 146
   NWS STORM PREDICTION CENTER NORMAN OK
   830 PM CDT SUN APR 12 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          SOUTHWEST AND WEST CENTRAL ALABAMA
          SOUTHEAST LOUISIANA
          SOUTHERN AND EAST CENTRAL MISSISSIPPI
          COASTAL WATERS
   
   EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 830 PM UNTIL
   300 AM CDT.
   
   TORNADOES...HAIL TO 1.5 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 75 STATUTE
   MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHEAST OF
   MERIDIAN MISSISSIPPI TO 15 MILES SOUTH SOUTHWEST OF SLIDELL
   LOUISIANA.  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...THIS TORNADO WATCH REPLACES TORNADO
   WATCH NUMBER 145. WATCH NUMBER 145 WILL NOT BE IN EFFECT AFTER
   830 PM CDT. 
   
   DISCUSSION...AN ORGANIZED BAND OF THUNDERSTORMS WITH EMBEDDED
   BOW/SUPERCELL STRUCTURES WILL LIKELY PERSIST AND SPREAD EWD/NEWD
   TOWARD WRN/SWRN AL THROUGH THE OVERNIGHT HOURS.  THE SURFACE MOIST
   SECTOR AND THE WARM FRONT WILL LIFT NWD ACROSS MS/AL IN CONJUNCTION
   WITH A SURFACE LOW DEVELOPING NWD FROM NW MS TOWARD WRN TN...AND AT
   LEAST WEAK SURFACE-BASED INSTABILITY CAN BE EXPECTED WITH MID-UPPER
   60S BOUNDARY LAYER DEWPOINTS.  THE N EDGE OF THE WARM SECTOR WILL
   COINCIDE WITH A ZONE OF STRONG WAA WHICH WILL HELP MAINTAIN
   THUNDERSTORM DEVELOPMENT...WHERE A 50-60 KT LLJ WILL CONTRIBUTE TO
   VERY STRONG LOW-LEVEL SHEAR AND AN ASSOCIATED THREAT FOR A COUPLE OF
   TORNADOES AND DAMAGING WINDS.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24030.
   
   
   ...THOMPSON
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