MESOSCALE DISCUSSION 0741
   NWS STORM PREDICTION CENTER NORMAN OK
   0955 PM CDT SUN MAY 06 2012
   
   AREAS AFFECTED...SERN KS...SWRN MO...NERN OK
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 259...
   
   VALID 070255Z - 070400Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 259
   CONTINUES.
   
   SUMMARY...WW 259 IS SCHEDULED TO EXPIRE AT 04Z. STRONG TSTMS SHOULD
   PERSIST ALONG COMPOSITE OUTFLOW/COLD FRONT FOR SEVERAL HOURS...BUT
   OVERALL SEVERE THREAT SHOULD REMAIN TOO MARGINAL FOR A NEW WW
   ISSUANCE.
   
   DISCUSSION...LEADING EDGE OF CONVECTIVE LINE PRESENT ALONG A COLD
   FRONT EXTENDED FROM AROUND 40 S OJC TO 20 PNC AS OF 0230Z. AN
   INCREASE IN LOW-LEVEL SLYS TO BETWEEN 25-30 KT HAS BEEN NOTED IN
   SGF/INX VWP DATA WHICH SHOULD AID IN SUSTAINING TSTMS GIVEN A
   PERSISTENT INFLUX OF A CONVECTIVELY UNDISTURBED AIR MASS OVER FAR
   SERN KS AND ERN OK CHARACTERIZED BY UPPER 60S TO LOWER 70S SURFACE
   DEW POINTS. STILL...WITH ONLY MODEST MID/HIGH-LEVEL SWLYS PER THE
   NEODESHA KS PROFILER AND ORIENTATION OF DEEP-LAYER FLOW PARALLELING
   THE FRONT...ALONG WITH WEAKENING LOW-LEVEL LAPSE RATES...THIS LINE
   SHOULD STRUGGLE TO INTENSIFY. ALTHOUGH A LOCALIZED MICROBURST CANNOT
   BE RULED OUT GIVEN A STRONGLY BUOYANT UPDRAFT...THIS THREAT APPEARS
   TOO MARGINAL TO WARRANT A NEW WW ISSUANCE.
   
   ..GRAMS.. 05/07/2012
   
   
   ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...
   
   LAT...LON   37059701 37849631 38619485 38679416 37989390 37309407
               36709457 36609491 36519560 36649639 36859688 37059701