MESOSCALE DISCUSSION 0337
   NWS STORM PREDICTION CENTER NORMAN OK
   0740 PM CDT MON MAR 30 2009
   
   AREAS AFFECTED...CNTRL/ERN OK AND SERN KS
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 95...
   
   VALID 310040Z - 310245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 95
   CONTINUES.
   
   00Z SFC ANALY PLACES A CDFNT FROM JUST W OF KTOP TO KSWO TO JUST W
   OF KOKC...THEN SWWD INTO WRN N TX.  A DRYLINE...QUICKLY BEING
   OVERTAKEN BY THE CDFNT...EXTENDED SWD FROM NEAR KLAW INTO THE TX BIG
   COUNTRY.
   
   TSTMS HAVE BEEN RAPIDLY DEVELOPING AS INHIBITION IS ERASED BY THE
   COLLISION OF THE CDFNT/DRYLINE AND INCREASING LARGER SCALE ASCENT
   ASSOCD WITH THE SRN PLNS UPR TROUGH.  WEBCAMS/SATL SUGGEST UPDRAFTS
   ARE DEVELOPING ATOP THE FRONTAL INVERSION.  BUT...AS STORMS/COLD
   POOLS BECOME ESTABLISHED...ACTIVITY IS BEING MAINTAINED IN A LINEAR
   FASHION IMMEDIATELY ALONG THE CDFNT ITSELF.  STEEP MID-LVL LAPSE
   RATES AND CLOUD-BEARING SHEAR OF 45-50 KTS WILL YIELD A FEW ROTATING
   UPDRAFTS WITH LARGE HAIL.  BUT...DMGG WIND GUSTS ALSO CAN BE
   EXPECTED...ESPECIALLY WHERE STORMS CAN BOW AHEAD OF THE LINE. 
   MAGNITUDE OF THE COLD POOLS/HIGH LCLS WILL KEEP THE TORNADO THREAT
   LOW...BUT NON-ZERO.  A BRIEF GUSTANDO WILL BE
   POSSIBLE...PARTICULARLY ACROSS NERN/CNTRL OK.
   
   LOOKING FARTHER AHEAD...NRN EXTENT OF THE LINE ACROSS SERN KS WILL
   LIKELY PROGRESS EWD INTO A MORE STABLE ENVIRONMENT OVER SWRN MO BY
   LATE EVENING...REDUCING THE SVR RISKS THAT FAR E.  POTENTIAL FOR AT
   LEAST ISOLD DMGG WINDS/HAIL WILL CONTINUE ESEWD WITHIN A BROADENING
   INSTABILITY AXIS ACROSS ECNTRL/SERN OK AND PERHAPS NCNTRL/NERN TX
   ALONG THE LEADING EDGE OF A STRONGER CAP LATER THIS EVENING.
   
   ..RACY.. 03/31/2009
   
   
   ATTN...WFO...SGF...TSA...ICT...FWD...OUN...
   
   LAT...LON   33819845 38339747 38059611 37659522 37369485 35889484
               34189544 33509624 33819845