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Mesoscale Discussion 80
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   MESOSCALE DISCUSSION 0080
   NWS STORM PREDICTION CENTER NORMAN OK
   0731 PM CST TUE JAN 29 2013
   
   AREAS AFFECTED...WRN/NRN/CNTRL MS...WRN TN
   
   CONCERNING...TORNADO WATCH 10...
   
   VALID 300131Z - 300330Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 10 CONTINUES.
   
   SUMMARY...DAMAGING WIND/TORNADO THREATS SHOULD CONTINUE TO INCREASE
   IN ASSOCIATION WITH SEMI-DISCRETE TSTM BANDS. COORDINATION WITH WFO
   MEM/JAN WILL OCCUR SHORTLY OVER ADDITIONAL AREAL EXTENSION OF WW 10
   OR NEW DOWNSTREAM WW ISSUANCE.
   
   DISCUSSION...SUPERCELL STRUCTURES HAVE BEEN NOTED WITH A BAND OF
   SEMI-DISCRETE TSTMS NOW JUST E OF THE MS RIVER. THIS ACTIVITY HAS
   PERSISTED ALONG THE LEADING EDGE OF MORE ROBUST BUOYANCY AS SAMPLED
   BY 00Z LZK/SHV/LCH RAOBS. DOWNSTREAM 00Z JAN AND A SPECIAL MS STATE
   SOUNDING FROM CLARKSDALE MS SAMPLED MORE MEAGER BUOYANCY WITH A
   DRIER BOUNDARY LAYER DESPITE LOWER 60S SURFACE DEW POINTS. ALTHOUGH
   THIS SHOULD LIMIT THE AMPLITUDE AND ERN EXTENT OF THE THREAT IN THE
   NEAR-TERM...RISING SURFACE DEW POINTS HAVE BEEN NOTED IN THE PAST
   HOUR AT KTVR/KHEZ ALONG THE MS/LA BORDER. GIVEN THE VERY FAVORABLE
   HODOGRAPHS FOR UPDRAFT ROTATION AND STRENGTHENING LARGE-SCALE
   ASCENT...A E/NEWD EXPANSION OF DAMAGING WIND/TORNADO POTENTIAL IN
   CONCERT WITH INCREASING DESTABILIZATION SHOULD CONTINUE.
   
   ..GRAMS/HART.. 01/30/2013
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
   
   ATTN...WFO...MEG...JAN...
   
   LAT...LON   31949144 33369096 34589042 35878984 35978908 35748864
               34958853 32098995 31949144 
   
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