STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
   DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
   
   VALID 031630Z - 041200Z
   
   THERE IS A MDT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   40 SSW HEZ 40 SSW SHV 25 SSE DAL 35 NNE MWL 25 E SPS 40 ESE FSI
   20 S MLC 40 SW HOT 30 ENE ELD 45 SW JAN 10 NW MCB 40 SSW HEZ.
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   30 NNW BVE 55 N CLL 45 W SJT 15 W BGS 25 NNW AMA 30 WNW AKO 81V
   70 SSE GDV DIK 30 NE HON 10 NE FOD 40 WSW OTM 35 W COU 25 ESE FYV
   10 NNE HOT 20 ENE GLH 15 NE 0A8 30 ESE ATL 20 S GSP CLT SOP
   25 S ILM ...CONT... MLB PIE.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 E PSX 35 NNW NIR
   70 W COT ...CONT... 25 SSW P07 30 NNE CAO 10 WSW PUB 20 SE MTJ
   40 NE U17 25 SW PGA 55 WSW GCN 40 WSW EED 40 WSW DAG 35 SW BFL
   10 ENE PRB 20 NNE SJC 40 N UKI 20 SW MFR 50 SW S80 40 SE S06
   40 NW CTB ...CONT... 15 E INL MSP 25 SW BRL 25 SSW BLV 20 NNE DYR
   35 ESE MKL 25 W TYS 25 ENE LOZ 50 NNW JKL 45 SW CMH 25 NNE CMH
   35 WNW PIT LBE 25 NW MRB 40 SW DCA 25 ENE RIC 35 NE ORF.
   
   
   
   LARGE SCALE PATTERN WILL CONTINUE TO AMPLIFY DURING THE PERIOD...AS
   STRONG UPPER TROUGH DIGS ESEWD INTO THE SWRN U.S. AND DOWNSTREAM
   SHORTWAVE RIDGE BUILDS OVER THE SRN HIGH PLAINS.  THIS WILL
   STRENGTHEN WNWLY FLOW ALOFT FROM THE RED RIVER VALLEY INTO THE
   CENTRAL GULF COAST REGION...PARALLEL TO SURFACE WARM FRONT/OUTFLOW
   BOUNDARY NOW BECOMING BETTER DEFINED FROM SRN MS INTO NRN TX.   SLY
   LOW LEVEL FLOW WILL ALSO STRENGTHEN ACROSS MOST OF THE PLAINS
   STATES AHEAD OF APPROACHING UPPER SYSTEM...WITH SOME NWD PUSH
   EXPECTED TO NRN TX WARM FRONT.  IN ADDITION...DRY LINE WILL BECOME
   ESTABLISHED ALONG THE LEE OF THE ROCKIES FROM WRN SD INTO WRN TX. 
   
   ...NRN TX/SRN OK INTO THE LOWER MS RIVER VALLEY...
   CURRENT INDICATIONS SUGGEST ETA MAY BE TOO AGGRESSIVE WITH ITS WARM
   FRONT POSITION LATER TODAY...WITH ACTUAL WARM FRONT LIKELY
   EXTENDING NEARER AVN FORECAST FROM THE ERN TX PANHANDLE SEWD TO
   NEAR ARKLATEX AREA BY THE EARLY EVENING.  OUTFLOW FROM ONGOING
   STRONG/SEVERE MCS OVER FAR SRN AL WILL REINFORCE ERN EXTENT OF
   SURFACE FRONT POSITION FROM SRN AL/FL PANHANDLE ACROSS SRN MS.  AIR
   MASS REMAINS VERY MOIST ACROSS WARM SECTOR WITH SURFACE DEW POINTS
   IN THE LOWER 70S LIKELY AS FAR NW AS N-CENTRAL TX/FAR SRN OK THIS
   AFTERNOON.  CAP WILL LIKELY WEAKEN ALONG THE LENGTH OF THE FRONT...
   WHICH IS OVERRIDDEN BY MODERATE WNWLY FLOW ALOFT.  CONVECTIVE
   SCENARIO MAY BE TRICKY...HOWEVER...AS WEAK DISTURBANCES REMAIN ILL-
   DEFINED WITHIN WNWLY FLOW.  EXPECT AN AREA OF CONVECTION TO DEVELOP
   NEAR THE RED RIVER VALLEY BY 21Z...WHICH WILL QUICKLY BECOME SEVERE
   GIVEN THE STRONG INSTABILITY IN PLACE.  THIS ACTIVITY SHOULD EVOLVE
   INTO SEVERAL SUPERCELLS AND LIKELY BECOME QUASI-LINEAR IN STRUCTURE
   DURING THE EVENING...POSSIBLY ORGANIZING INTO A FORWARD PROPAGATING
   MCS INTO NERN TX/SRN AR/NRN LA.  SEVERE THUNDERSTORMS ARE EXPECTED
   TO BE WIDESPREAD ALONG THIS CORRIDOR.  ADDITIONAL SEVERE
   THUNDERSTORM DEVELOPMENT MAY OCCUR INTO THE ARKLATEX REGION AND
   INTO LA/SRN MS DURING THE MID/LATE AFTERNOON...IN THE FORM OF
   SUPERCELLS AND SMALL LINES AS CAP WEAKENS ALONG THE LENGTH OF THE
   BOUNDARY AND STRONG INSTABILITY DEVELOPS.
   
   ...CENTRAL/SRN HIGH PLAINS INTO THE CENTRAL PLAINS...
   DRY LINE WILL LIKELY BECOME WELL ESTABLISHED FROM WRN SD ACROSS THE
   NEB PANHANDLE/ERN CO INTO THE ERN TX PANHANDLE TODAY.  THIS AREA
   WILL ALSO REMAIN NORTH OF SHORTWAVE RIDGING OVER MUCH OF WRN TX...
   AND LARGE SCALE ASCENT/CONVERGENCE IS EXPECTED TO BECOME
   INCREASINGLY FAVORABLE FOR DIURNAL THUNDERSTORM DEVELOPMENT. 
   SURFACE DEW POINTS IN THE LOWER 50S ARE EXPECTED AS FAR NORTH AS
   WRN SD...WITH MID 60S POSSIBLY INTO NWRN TX/ERN TX PANHANDLE BY
   AFTERNOON.  RESULTANT MLCAPES ARE THEREFORE FORECAST OVER 1000
   J/KG ALONG NRN PORTION OF SLIGHT RISK...AND MAY EXCEED 2500 J/KG
   INTO THE SRN HIGH PLAINS.  AS CAP WEAKENS...SEVERAL AREAS OF DEEP
   MOIST CONVECTION ARE EXPECTED AFTER 21Z.  LOW AND DEEP LAYER SHEAR
   WILL BE IMPRESSIVE ALONG MUCH OF THE DRY LINE WITH SFC-6 KM SHEAR
   IN EXCESS OF 70 KT...SUGGESTING SEVERAL TORNADIC SUPERCELLS MAY
   EVOLVE.  VERY LARGE HAIL WILL BE AN ADDITIONAL THREAT WITHIN VERY
   STEEP LAPSE RATES.  STORMS SHOULD BECOME ELEVATED/DEVELOP EWD AS
   LLJ AMPLIFIES DURING THE EVENING...WHICH WILL SPREAD A THREAT OF
   LARGE HAIL OVER MUCH OF THE CENTRAL PLAINS AFTER DARK.
   
   ...SOUTHEAST/CAROLINAS... 
   SURFACE FRONT REMAINS ANCHORED ACROSS NRN FL/FAR SRN GA...THOUGH
   RESIDUAL MOISTURE NORTH OF THE BOUNDARY SHOULD SUPPORT MODERATE
   INSTABILITY LATER TODAY.  IN ADDITION...WEAK SHORTWAVE TROUGH NOW
   MOVING ACROSS AL WILL LIKELY SUPPORT AFTERNOON CONVECTION...
   INCLUDING A FEW SEVERE THUNDERSTORMS GIVEN THE MODEST INSTABILITY
   AND SHEAR...AS STORMS SPREAD TOWARDS THE COAST DURING THE EVENING.
   
   ...CENTRAL APPALACHIANS...
   SHORTWAVE TROUGH NOW OVER IL/IND WILL AMPLIFY AS IT APPROACHES WV
   TODAY...AND MAY SUPPORT NUMEROUS THUNDERSTORMS INTO THE CENTRAL
   APPALACHIANS TODAY AND TONIGHT.  THOUGH HAIL SHOULD ACCOMPANY
   STRONGER STORMS...OVERALL INSTABILITY IS NOT FORECAST TO SUPPORT
   MORE THAN ISOLATED SEVERE THUNDERSTORMS.
   
   ..EVANS.. 05/03/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 2000Z