MESOSCALE DISCUSSION 0627
   NWS STORM PREDICTION CENTER NORMAN OK
   0916 AM CDT WED APR 29 2009
   
   AREAS AFFECTED...SRN OK/N TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 208...
   
   VALID 291416Z - 291545Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 208
   CONTINUES.
   
   ORGANIZING CONVECTIVE BAND MOVING ACROSS SRN OK/THE RED RIVER VALLEY
   WILL LIKELY WARRANT NEW WW ISSUANCE.
   
   STRONG CONVECTION CONTINUES ACROSS PARTS OF THE ERN HALF OF WW
   208...WITH A MESOLOW BECOMING MORE WELL-DEFINED OVER CENTRAL OK.  S
   OF THIS LOW...THE MOST INTENSE/ARCING BAND OF STORMS IS
   ONGOING...MOVING EWD AT 35 KT ACROSS SRN OK AND THE RED RIVER
   VALLEY.  WITH SELY LOW-LEVEL INFLOW AND A WEAK WARM FRONT LYING
   WNW-ESE ACROSS SRN OK/NERN TX...STORMS SHOULD CONTINUE MOVING
   EWD/ESEWD AS A WELL-ORGANIZED CLUSTER.  THOUGH A WIDESPREAD
   DOWNSTREAM CLOUD DECK WILL LIMIT HEATING/DESTABILIZATION...EXISTING
   INSTABILITY/SHEAR COMBINATION APPEARS SUFFICIENT FOR AT LEAST
   LIMITED DAMAGING WIND/HAIL POTENTIAL -- WHICH WILL LIKELY REQUIRE A
   NEW WW ISSUANCE ACROSS SERN OK/N TX WITHIN THE NEXT HOUR.
   
   ..GOSS.. 04/29/2009
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...SJT...
   
   LAT...LON   33219960 33749952 34009847 34799770 34839488 33559418
               32629432 32639772 33219960