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Apr-12-2003 1300 UTC Day 1 Convective Outlook
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1300 UTC Day 1 Outlook Graphic
      
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   STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
   DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
   
   VALID 121300Z - 131200Z
   
   NO SVR TSTM AREAS FCST.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 80 ENE HVR
   20 ENE LWT 40 NE WEY 10 SSE IDA 40 N ENV 55 ESE U31 15 WSW BIH
   25 SW PRB ...CONT... HQM 35 NNW SEA 50 E BLI.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 WNW CLL
   40 SSE JCT 70 ENE P07 BGS 55 E LBB 15 ESE MWL 35 WNW CLL.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 SE ISP 25 WSW GON
   20 N GON 10 N PVD 25 NNE EWB.
   
   
   
   ...NWRN U.S....
   
   UPPER LOW ALONG THE PACIFIC NW COAST WILL DRIFT SLOWLY EWD
   TODAY...WHILE A SERIES OF SHORTWAVE TROUGHS MOVE THROUGH THIS
   FEATURE. LARGE SCALE ASCENT ASSOCIATED WITH THE SHORTWAVES WILL
   ENHANCE CONVECTION WITHIN THE STEEP LAPSE RATE ENVIRONMENT N OF
   CYCLONICALLY CURVED UPPER JET. LIMITED INSTABILITY SUGGESTS
   LIGHTNING ACTIVITY SHOULD REMAIN ISOLATED.
   
   ...TX...
   
   ELEVATED STORMS ASSOCIATED WITH WARM ADVECTION EXPECTED TO DIMINISH
   LATER THIS MORNING AS THE LOW LEVEL JET SUBSIDES. UPPER RIDGE WILL
   CONTINUE TO BUILD EWD INTO TX TODAY. MODEST LOW LEVEL MOISTURE WITH
   SURFACE DEWPOINTS IN THE UPPER 40S TO LOWER 50S HAVE ADVECTED NWWD
   INTO  W CNTRL AND ERN PORTIONS OF W TX. HOWEVER...THE DRYLINE WILL
   REMAIN POORLY DEFINED TODAY WITH WEAK FLOW AND LIMITED LARGE SCALE
   SUPPORT FOR CONVERGENCE. A STORM OR TWO MAY DEVELOP IN MOISTURE
   GRADIENT REGION OVER W TX OR W CNTRL TX WHERE DEEPER MIXING MAY BE
   SUFFICIENT TO WEAKEN CAP. ANY ACTIVITY THAT DOES DEVELOP WILL BE
   VERY ISOLATED AND QUICKLY DIMINISH WITH LOSS OF HEATING.
     
   ..DIAL.. 04/12/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 1630Z
        
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