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Tornado Watch 1
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WW0001 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Moderate Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Very Low Very 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.
   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 1
   NWS STORM PREDICTION CENTER NORMAN OK
   435 AM CST THU JAN 10 2013
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          CENTRAL LOUISIANA
          SOUTHWEST MISSISSIPPI
          COASTAL WATERS
   
   EFFECTIVE THIS THURSDAY MORNING FROM 435 AM UNTIL NOON CST.
   
   TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE
   MILES EAST AND WEST OF A LINE FROM 10 MILES NORTH OF NATCHEZ
   MISSISSIPPI TO 40 MILES SOUTH SOUTHEAST OF INTRACOASTAL CITY
   LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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.
   
   DISCUSSION...EXISTING SSW-NNE SQLN HAS SHOWN SOME SIGNS OF
   PERSISTENT STRENGTHENING IN THE PAST HOUR. THIS MAY BE DUE TO /1/
   ARRIVAL OF DEEPER/STRONGER LOW-LVL WLY FLOW TO ITS LEADING EDGE /PER
   LCH VWP/...AND /2/ TO PERHAPS INCREASED LARGE SCALE ASCENT NEARING
   REGION /PER WATER VAPOR IMAGERY./ AT ANY RATE...AREA VWP DATA SHOW
   AMPLE LOW-LVL SHEAR TO SUPPORT LOW-LVL MESO/POSSIBLE TORNADOES GIVEN
   PERSISTENT ESELY SFC WINDS E OF SQLN LINE. ALSO...REGION IS
   SUFFICIENTLY MOIST /DEWPOINTS IN THE UPR 60S TO AROUND 70F/ TO
   SUPPORT SUSTAINED UPDRAFTS...DESPITE RELATIVELY WEAK MID-LVL LAPSE
   RATES....GIVEN PRESENCE OF A SOURCE FOR LOW-LVL UPLIFT ALONG SQLN
   GUST FRONT.
   OVERALL SETUP SUGGESTS A POSSIBLY INCREASING RISK FOR EMBEDDED
   LEWPS/ROTATING STRUCTURES CAPABLE OF TORNADOES/LOCALLY DMGG WIND AS
   THE SQLN DEVELOPS FARTHER NNEWD...AND MOVES GENERALLY
   ENEWD...THROUGH LATER THIS MORNING.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   400. MEAN STORM MOTION VECTOR 21030.
   
   
   ...CORFIDI
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Page last modified: January 10, 2013
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