Severe Thunderstorm Watch #475 until 10:00pm 6 July 2012

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 475
   NWS STORM PREDICTION CENTER NORMAN OK
   510 PM CDT FRI JUL 6 2012
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          WESTERN ALABAMA
          CENTRAL MISSISSIPPI
   
   EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 510 PM UNTIL
   1000 PM CDT.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
   STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF
   GREENWOOD MISSISSIPPI TO 60 MILES EAST OF JACKSON MISSISSIPPI. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU5).
   
   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 474...
   
   DISCUSSION...CLUSTERS OF STRONG TO SVR PULSE TSTMS IN NE MS APPEARS
   TO HAVE DEVELOPED A SUFFICIENTLY STRONG COLD POOL THAT MAY SUPPORT
   CONTINUED SW STORM PROPAGATION GIVEN 20-25 KT 700 MB FLOW /PER VWP
   DATA/ AND CORRIDOR OF RICH LOW LVL MOISTURE ACROSS REGION /PER SFC
   OBS AND STLT-GPS DERIVED PW/.  OTHER STORMS MAY FORM IN ZONE OF
   UPLIFT AND ENHANCED LOW LVL INSTABILITY ALONG/AHEAD OF OUTFLOW
   BOUNDARY OVER NW AND W CNTRL AL.  SETUP MAY YIELD NARROW CORRIDORS
   OF LOCALLY DMGG WIND AND POSSIBLY MARGINALLY SVR HAIL THROUGH LATE
   EVE.
   
   AVIATION...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 05020.

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