STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
   DAY 3 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWK48 KWNS.
    
   VALID 281200-011200
    
   LESS THAN A SLIGHT RISK
    
   ...SYNOPSIS...
   SPLIT FLOW PATTERN WILL CONTINUE ON FRIDAY.  SRN STREAM IMPULSE NOW
   OFF VANCOUVER ISLAND EXPECTED TO DROP SE ACROSS CA ON THURSDAY
   BEFORE TURNING E AND THEN NE ACROSS THE SRN ROCKIES AND SRN PLAINS
   ON FRIDAY.  INTENSITY OF ASSOCIATED LEE CYCLOGENESIS WILL LIKELY BE
   DIMINISHED BY CONTINUING PRESENCE OF SHALLOW POLAR/ARCTIC AIR MASS
   OVER THE PLAINS.  FARTHER SE...AN ADDITIONAL WAVE MAY DEVELOP LATE
   IN THE PERIOD ALONG LINGERING FRONTAL ZONE ALONG THE CNTRL GULF
   CST.
   
   ...SRN PLNS...
   WARM ADVECTION AND DPVA WILL STRENGTHEN CONSIDERABLY ABOVE SHALLOW
   COLD DOME OVER THE SRN PLNS ON FRIDAY AS UPPER IMPULSE EJECTS ENE
   ACROSS REGION.  GIVEN LIKELY PRESENCE OF STEEP LAPSE RATES AT MID
   LEVELS AND STRENGTH OF CLOUD LAYER WSWLY SHEAR /ON THE ORDER OF 60
   KTS/...EXPECT ONE OR TWO LARGE AREAS OF ELEVATED SUSTAINED
   THUNDERSTORMS WILL AFFECT PARTS OF OK/KS/SRN MO AND NW AR DURING
   THE PERIOD.  WITH ELEVATED MOISTURE INFLOW INCREASING WITH EWD
   EXTENT...SOME OF THIS ACTIVITY COULD YIELD SEVERE HAIL...ESPECIALLY
   ACROSS THE ERN HALF OF OK/SE KS/SRN MO AND NW AR.  THE THUNDER
   COULD ALSO BE ACCOMPANIED BY SNOW AND/OR FREEZING PRECIPITATION IN
   KS.    
   
   ...CNTRL GULF CST...
   LOW LEVEL WARM ADVECTION WILL INCREASE ALONG THE CNTRL GULF CST
   LATE IN THE PERIOD INVOF SURFACE WAVE DEVELOPING ALONG STALLED
   FRONT.  THIS DEVELOPMENT MAY BE ACCOMPANIED BY AN INCREASE IN
   THUNDERSTORM COVERAGE OVER REGION EARLY SATURDAY.  NLY TRACK OF
   EJECTING ROCKIES/PLAINS DISTURBANCE SUGGESTS THAT WAVE ALONG THE
   GULF CST WILL REMAIN WEAK...WITH WARM SECTOR REMAINING OFFSHORE
   THROUGH THE PERIOD.  BUT FAR SRN STREAM/SUBTROPICAL JET WILL HAVE
   TO BE MONITORED FOR SIGNS OF A SPEED MAX THAT MIGHT SUPPORT
   STRONGER COASTAL CYCLOGENESIS THAN IS NOW ANTICIPATED...AS INLAND
   PENETRATION OF WARM SECTOR WOULD INCLUDE AN ATTENDANT RISK OF
   TORNADOES GIVEN STRENGTH OF DEEP SHEAR /AROUND 70 KTS/ AND QUALITY
   OF GULF MOISTURE INFLOW.  
   
   ..CORFIDI.. 02/26/03
    
   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED FOR 1200Z