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Severe Thunderstorm Watch 154
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WW0154 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate 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.
   SEL4
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 154...CORRECTED
   NWS STORM PREDICTION CENTER NORMAN OK
   225 AM CDT FRI MAY 10 2013
   
   CORRECTED FOR WATCH PROBABILITIES
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   
   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     SOUTH-CENTRAL AND SOUTHEAST LOUISIANA
     SOUTHWEST AND SOUTH-CENTRAL MISSISSIPPI
     COASTAL WATERS
   
   * EFFECTIVE THIS FRIDAY MORNING FROM 225 AM UNTIL 1000 AM CDT.
   
   * PRIMARY THREATS INCLUDE...
     SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     SEVERAL LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE
     A FEW TORNADOES POSSIBLE
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
   STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF MC
   COMB MISSISSIPPI TO 35 MILES SOUTHWEST OF HOUMA LOUISIANA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU4).
   
   PRECAUTIONARY/PREPAREDNESS ACTIONS...
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.
   
   &&
   
   OTHER WATCH INFORMATION...CONTINUE...WW 153...
   
   DISCUSSION...QLCS ONGOING OVER CNTRL/SWRN LA IS EXPECTED TO CONTINUE
   EWD ACROSS THE WATCH AREA EARLY THIS MORNING.  THIS SYSTEM IS BEING
   AIDING BY A LOW-AMPLITUDE SHORT-WAVE TROUGH AND ASSOCIATED 50-60 KT
   MIDLEVEL JET STREAK WHICH IS ENHANCING FORCING FOR ASCENT AND
   VERTICAL SHEAR.  WHEN COUPLED WITH A MOIST AND AT LEAST MARGINALLY
   UNSTABLE AIR MASS...THE SETUP WILL REMAIN SUPPORTIVE OF EMBEDDED
   LEWP STRUCTURES CAPABLE OF DAMAGING WINDS AND PERHAPS A BRIEF
   TORNADO OR TWO.
   
   AVIATION...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 26025.
   
   
   ...MEAD
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Page last modified: May 10, 2013
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