MESOSCALE DISCUSSION 0607
   NWS STORM PREDICTION CENTER NORMAN OK
   1253 AM CDT THU MAY 09 2013
   
   AREAS AFFECTED...N CNTRL OK
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 090553Z - 090800Z
   
   PROBABILITY OF WATCH ISSUANCE...20 PERCENT
   
   SUMMARY...THUNDERSTORMS ARE EXPECTED TO MOVE FROM NWRN INTO N CNTRL
   OK TONIGHT...WITH MARGINAL HAIL OR WIND EXPECTED. THE THREAT DOES
   NOT CURRENTLY NECESSITATE A WATCH.
   
   DISCUSSION...STORMS HAVE RECENTLY INCREASED ALONG THE COLD FRONT
   OVER NWRN OK. MEANWHILE...MUCH OF THE SURFACE AIR MASS HAS BEEN
   STABILIZED ACROSS CNTRL OK IN THE WAKE OF EARLIER CONVECTION...NOW A
   DYING MCS ACROSS NERN OK. 
   
   A STRONG SLY LOW LEVEL JET PERSISTS...WHICH IS HELPING TO MAINTAIN
   AN ELEVATED FEED OF MOISTURE AND INSTABILITY ATOP OF OUTFLOW
   BOUNDARY WHICH EXTENDED FROM W CNTRL INTO S CNTRL OK. THE COOL AIR
   ALOFT WOULD TEND TO FAVOR A FEW HAIL CORES...BUT MARGINAL DEEP LAYER
   SHEAR AND DECREASING ELEVATED INSTABILITY WITH TIME SHOULD MITIGATE
   ANY SEVERE WIND THREAT.
   
   ..JEWELL/KERR.. 05/09/2013
   
   
   ATTN...WFO...TSA...OUN...
   
   LAT...LON   35599926 35799921 36499823 36579740 36409660 36039629
               35579626 35189657 34969747 35079833 35289903 35599926