STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
   DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
   
   VALID 232000Z - 241200Z
   
   THERE IS A MDT RISK OF SVR TSTMS THIS AFTERNOON INTO THE OVERNIGHT
   HOURS ACROSS MUCH OF NEB...SERN SD...SWRN MN...AND WRN IA.  THE MDT
   RISK AREA IS TO THE RIGHT OF A LINE FROM 15 E FRM 45 WNW DSM 15 E
   BIE 25 S HSI 25 ENE IML 50 WNW LBF 50 NNW MHN 30 W HON 10 ESE ATY
   15 NNE RWF 15 E FRM.
   
   SURROUNDING THE MDT RISK AREA...THERE IS A SLGT RISK OF SVR TSTMS
   TO THE RIGHT OF A LINE FROM 25 W IWD 15 NNE AUW 20 S MSN 30 NNE MLI
   40 WSW OTM 40 ENE SZL 40 NW SGF 40 W CNU 10 NNW SLN 30 SSE MCK 30
   SE AKO 15 SW LAR 35 S CPR 45 SSW GCC 30 N PHP 20 NW JMS 20 W RRT.
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   35 N PVW 40 SW LBB 35 NW MAF 30 ENE MRF 60 NW MRF 30 NNW ROW
   30 NW TCC 35 W EHA 15 E EHA 55 NNE AMA 35 N PVW.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 65 SSW GDP
   30 NNW GDP 35 SE 4CR 35 SE RTN 55 NE LAA 35 W GLD 20 S DEN
   25 ENE CAG 30 N GJT 15 WSW CDC 25 NNE BIH 40 S TVL 35 NE RBL
   75 SSE RDM 50 W BKE 40 ENE EPH 40 NNE 4OM ...CONT... 60 N OLF
   10 ENE GGW 15 ENE LWT 20 SW BTM 30 NNW IDA 30 SW COD 20 SW SHR
   15 WNW 81V 10 SW REJ 35 W BIS 65 NNE DVL ...CONT... 60 WNW ANJ
   30 SW MBL 10 N CGX STL 55 SSW UNO 30 ENE FSM 40 ESE END 15 N DDC
   25 W GAG 10 ENE MAF 90 SSE MRF.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 SE NEL 15 NNE MSV
   25 NNW GFL 15 NW EFK.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 S CRP 45 SSE SAT
   30 SE TPL 35 SSW ELD 10 SSE MGR MLB.
   
   ...SYNOPSIS...
   LARGE UPPER TROUGH OVER THE NWRN CONUS IS FORECAST TO MOVE LITTLE
   THROUGH THE END OF THE PERIOD WHILE BELT OF RELATIVELY STRONG /35
   TO 50 KT/ SWLY MID-LEVEL FLOW PERSISTS ALONG THE PERIPHERY OF THIS
   FEATURE FROM THE CENTRAL ROCKIES NEWD INTO THE UPPER MS VALLEY
   REGION.
   
   AT THE SURFACE...MAIN BAROCLINIC ZONE EXTENDS FROM THE ERN DAKOTAS
   SSWWD INTO NERN CO...AND THEN WNWWD ACROSS NRN CO INTO SERN WY.  IN
   ADDITION...SEVERAL OUTFLOW BOUNDARIES ARE EVIDENT...INCLUDING A NW-
   SE BOUNDARY EXTENDING FROM SWRN NEB INTO SERN KS.
   
   ...CENTRAL AND NRN PLAINS / NRN MS VALLEY REGION...
   CLUSTER OF THUNDERSTORMS CONTINUES MOVING NEWD ACROSS W CENTRAL MN
   WITH CONTINUED REDEVELOPMENT ALONG THE SWRN FLANK OF THE STORM
   CLUSTER WHERE FEED OF MORE UNSTABLE AIR FROM THE SOUTH PERSISTS. 
   IT APPEARS THAT THIS AREA IS ON THE NRN PERIPHERY OF THE STRONGER
   MID-LEVEL FLOW...SUGGESTING A CONTINUED THREAT FOR HAIL / LOCALLY
   DAMAGING WINDS.
   
   FURTHER SWWD...WEAK RIDGING ACROSS THE PLAINS IS EVIDENT ON WV
   LOOP...WHICH HAS ALLOWED CAP TO PERSIST.  IN ADDITION...AIRMASS
   ACROSS MUCH OF NEB WAS STABILIZED BY EARLIER CONVECTION...AND THESE
   FACTORS HAVE SUPPRESSED CONVECTIVE DEVELOPMENT THUS FAR.  A FEW
   STORMS HAVE BEGUN TO DEVELOP IN INCREASINGLY MOIST ELY / UPSLOPE
   FLOW ACROSS WY...AND AS LOW-LEVEL JET DEVELOPS EARLY THIS
   EVENING...EXPECT REMNANT OUTFLOW LYING NW-SE ACROSS KS TO RETREAT
   NWD.  STORMS SHOULD DEVELOP ALONG THIS RETREATING BOUNDARY AND
   INVOF MAIN SURFACE BAROCLINIC ZONE OVER THE NEXT 2 TO 4 HOURS...AND
   THEN INCREASE OVERNIGHT AS LOW-LEVEL JET AND ASSOCIATED THETA-E
   ADVECTION INCREASES.
   
   SURFACE FLOW REMAINS GENERALLY SELY ACROSS NEB N OF KS OUTFLOW
   BOUNDARY...WITH WINDS THEN VEERING TO WLY AND INCREASING TO 35 TO
   45 KTS AT MID-LEVELS.  THIS COMBINED WITH INCREASINGLY MOIST /
   UNSTABLE AIRMASS SUGGESTS THAT STORMS SHOULD RAPIDLY BECOME
   SUPERCELLULAR...WITH VERY LARGE HAIL EXPECTED ALONG WITH LOCALLY
   DAMAGING WINDS AND A TORNADO OR TWO.  OVERNIGHT...STORMS SHOULD
   ORGANIZE INTO ONE OR MORE MCS/S...WITH A CONTINUED THREAT FOR
   POTENTIALLY DAMAGING WINDS ALONG WITH LARGE HAIL AND A TORNADO OR
   TWO.   
   
   ...SRN HIGH PLAINS...
   THUNDERSTORMS CONTINUE TO DEVELOP OVER THE HIGHER TERRAIN OF FAR W
   TX...AND ISOLATED STORMS ARE FORECAST TO DEVELOP NWD ACROSS ERN NM
   AND POSSIBLY ACROSS THE BORDER INTO WRN PORTIONS OF TX.  AIRMASS
   HAS BECOME MODERATELY UNSTABLE /1500 TO 2500 J/KG MEAN-LAYER CAPE/
   ACROSS THIS REGION...AND 20 TO 30 KT MID-LEVEL FLOW IS CONTRIBUTING
   TO SUFFICIENT DEEP-LAYER SHEAR FOR SOME STORM ORGANIZATION /
   ROTATION.  LARGE HAIL AND LOCALLY-DAMAGING WINDS WILL BE POSSIBLE
   INTO THE EVENING HOURS BEFORE STORMS WEAKEN WITH BOUNDARY LAYER
   STABILIZATION / RE-ESTABLISHMENT OF LOW-LEVEL CAPPING INVERSION. 
   
   ...NEW ENGLAND...
   A FEW STRONGER STORMS HAVE DEVELOPED ACROSS SRN VT / SRN NH SWD
   ACROSS WRN MA...EMBEDDED WITHIN MODERATELY-STRONG NNELY / CYCLONIC
   MID-LEVEL FLOW.  DAYTIME HEATING HAS CONTRIBUTED TO MODERATE
   DESTABILIZATION ACROSS THIS REGION...BUT BOUNDARY LAYER AIRMASS
   SHOULD RAPIDLY STABILIZE AFTER SUNSET.  UNTIL THEN...AMOUNT OF
   INSTABILITY AND MODERATE FLOW ALOFT SUGGESTS A POTENTIAL FOR
   MARGINALLY-SEVERE HAIL OR A LOCALLY DAMAGING GUST WITH ONE OR TWO
   OF THE STRONGER STORMS.
   
   ..GOSS.. 06/23/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0100Z