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Mesoscale Discussion 326
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MD 326 graphic
   
   MESOSCALE DISCUSSION 0326
   NWS STORM PREDICTION CENTER NORMAN OK
   0953 AM CDT THU MAR 22 2012
   
   AREAS AFFECTED...FAR SERN MS...SWRN AL
   
   CONCERNING...TORNADO WATCH 99...
   
   VALID 221453Z - 221600Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 99 CONTINUES.
   
   A RISK FOR LOCALLY DAMAGING WINDS AND A BRIEF TORNADO...ALONG WITH
   HEAVY RAIN SHOULD CONTINUE FOR THE NEXT FEW HOURS WITHIN A
   PERSISTENT N/S-ORIENTED CONVECTIVE BAND. THIS THREAT /ALBEIT
   MARGINAL/ WILL LIKELY EXTEND E INTO PORTIONS OF AL...WHERE A NEW WW
   ISSUANCE IS BEING CONSIDERED.
   
   N/S-ORIENTED CONVECTIVE BAND FROM GREENE COUNTY MS TO MARINE ZONE
   557 HAS PERSISTED FOR SEVERAL HOURS WHILE MAINTAINING A VERY SLOW
   EWD MOVEMENT. LOW-LEVEL SLYS REMAIN STRONG AHEAD OF THE LINE WITH
   THE MOB VAD WIND PROFILE INDICATING 0-1 KM SRH AROUND 300 M2/S2.
   ALTHOUGH LOW-LEVEL FLOW IS FORECAST TO WEAKEN AS PRIMARY SHORT WAVE
   IMPULSE ROTATES ACROSS THE OZARK PLATEAU...SHEAR SHOULD REMAIN
   SUFFICIENT FOR RISKS OF DAMAGING WINDS/TORNADOES GIVEN THE PRESENCE
   OF UPPER 60S TO AROUND 70 SURFACE DEW POINTS. DOWNSTREAM HEATING
   SHOULD BE RETARDED BY ABUNDANT CLOUD COVERAGE...AND MAY LIMIT A MORE
   ROBUST SEVERE THREAT.
   
   ..GRAMS.. 03/22/2012
   
   
   ATTN...WFO...BMX...MOB...LIX...
   
   LAT...LON   29878885 30938858 31338854 31758839 31958821 32038803
               32018785 31758771 31618763 30308754 29388871 29538893
               29878885 
   
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Page last modified: March 22, 2012
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