STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
   DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
   
   VALID 122200Z - 131200Z
   
   THERE IS A MDT RISK OF SVR TSTMS ACROSS PORTIONS OF SWRN OK AND NRN
   TX TO THE RIGHT OF A LINE FROM 35 WSW SJT 55 NW ABI 35 NE CDS 10 E
   CSM 45 ESE SPS 20 NNE DAL 45 S DAL 15 SE BWD 30 NW JCT 35 WSW SJT.
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   25 SSW BPT 10 SSE CLL 45 SE JCT 45 SE DRT ...CONT... 25 S P07
   55 E LBB 30 W CDS 30 N CVS 30 WNW TCC 35 SSE 4FC 45 WSW GCC
   25 NE 81V 35 NW RAP 20 E LBF 20 S EMP 30 NNE TXK 25 NE HEZ
   25 S MEI 40 ENE CBM 10 SSE HSS 10 WSW BKW 35 S HLG 25 ENE LBE
   10 NNE ABE 20 SW JFK ...CONT... 35 ENE CRE 45 S FLO 25 NE AGS
   30 WSW MGR 35 SSE CEW.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 ESE CRP 45 E COT
   65 SSE DRT ...CONT... 40 SSW P07 35 E PVW 20 N PVW 15 NE CVS
   20 WNW LVS 50 WSW FMN 20 W U17 25 WNW CDC 45 W P38 60 S TPH
   45 W BIH 10 WNW TVL 45 SSE 4LW 95 SSE BNO 30 N IDA 25 NNW FCA
   50 ENE CTB 55 NNE BIL 25 SSE MLS 45 N REJ 25 W PIR 15 E FSD
   55 NNE MOT 20 NNE RRT 85 NW CMX 30 NNW IWD 30 NNW RHI 30 SSW PIA
   35 NNE EVV 30 WNW LUK 50 NNW MFD ...CONT... 15 WSW ART 15 SW GFL
   25 NNE EWB.
   
   ...SERN LA/SRN MS...
   ADDED SLIGHT RISK ACROSS SRN MS AS BOW ECHO IS EXPECTED TO TRACK
   ESEWD ALONG OUTFLOW BOUNDARY LEFT OVER FROM EARLIER CONVECTIVE
   COMPLEX...WHERE AIR MASS IS MODERATELY UNSTABLE/SHEARED.
   
   ...SRN PLAINS...
   THE SRN STREAM OF A SPLIT UPPER FLOW REGIME WILL REMAIN THE MOST
   ACTIVE FROM THE SRN PLAINS ENEWD TO THE MID-ATLANTIC STATES THROUGH
   THE REST OF THE PERIOD.  STRONG SURFACE HEATING OVER WRN TX HAS
   ALLOWED DRY LINE TO MIX EWD WITH THIS BOUNDARY EXPECTED TO EXTEND
   FROM NEAR A CDS-SJT LINE BY LATE AFTERNOON.  NUMEROUS OUTFLOW
   BOUNDARIES EXIST FROM SWRN OK/NRN TX SEWD INTO ERN TX FROM
   PREVIOUS/ONGOING CONVECTIVE COMPLEXES.
   
   CONVECTIVE COMPLEX OVER NRN TX CONTINUES TO BE SUPPORTED BY A 35 KT
   SWLY LLJ INTO THE WRN PORTION OF THIS ACTIVITY.  18Z FWD SOUNDING
   INDICATED A CAP BASED AROUND 800 MB WITH REGIONAL RADARS SHOWING
   THE OUTFLOW IS MOVING WELL SOUTH OF THE STORMS.  THEREFORE...THIS
   ACTIVITY SHOULD REMAIN ELEVATED AS IT CONTINUES TO MOVE SEWD THIS
   AFTERNOON WITH HAIL BEING THE PRIMARY THREAT. 
   
   MORE SIGNIFICANT CONVECTION IS EXPECTED TO DEVELOP LATE THIS
   AFTERNOON AS WARM SECTOR FROM SWRN OK SEWD INTO ERN TX AND EAST OF
   THE DRY LINE HAS BECOME VERY UNSTABLE TO EXTREME INSTABILITY WITH
   MLCAPE RANGING FROM 2500-4000 J/KG.  VIS IMAGERY SHOWS CU/TCU
   DEVELOPING ON THE WRN EXTENT OF THE NRN TX OUTFLOW BOUNDARY BETWEEN
   ABI-SPS AND WITHIN THE AXIS OF STRONGEST INSTABILITY.  SUBSIDENCE
   WITH SHORT WAVE RIDGING OVER THE DRY LINE APPEARS TO SUPPRESSING
   CONVECTIVE DEVELOPMENT ATTM.  HOWEVER...CONTINUED SURFACE HEATING
   COMBINED WITH INCREASING LARGE SCALE ASCENT WITHIN THE EXIT REGION
   OF A 100 KT WLY UPPER JET SHOULD ALLOW ISOLATED STORMS TO DEVELOP
   ALONG THE DRY LINE/ OUTFLOW BOUNDARIES OVER WRN TX BY LATE
   AFTERNOON.  GIVEN A VERY UNSTABLE AIR MASS WITH 25-35 KT OF DEEP
   LAYER SHEAR...STORMS WILL QUICKLY BECOME SEVERE WITH SUPERCELLS
   PRODUCING LARGE HAIL... DAMAGING WINDS AND A FEW TORNADOES.  
   
   STRENGTHENING SLY LLJ OVER CENTRAL-NRN TX AND INCREASING DEEP LAYER
   OVER SWRN OK AND ALONG/E OF THE DRY LINE AROUND/JUST AFTER 00Z WILL
   RESULT IN MORE NUMEROUS SUPERCELLS/CONVECTIVE CLUSTERS TO DEVELOP. 
   OUTFLOWS FROM THESE STORMS WILL LIKELY CONGEAL INTO ONE OR MORE
   COLD POOLS WITH 30-40 KT OF WLY MID-LEVEL FLOW AND EXTREME
   INSTABILITY SUPPORTING A BOW ECHO OVERNIGHT NEAR BOUNDARY ACROSS
   NRN TX.  WIDE SPREAD WIND DAMAGE WILL BE POSSIBLE WITH THIS BOW
   ECHO. 
   
   ...SRN APPALACHIANS NEWD INTO THE MID ATLANTIC...
   SURFACE BOUNDARY EXTENDS FROM SRN NEW ENGLAND WSWWD INTO THE OH
   VALLEY WITH MODERATE TO A VERY UNSTABLE AIR MASS EXTENDING FROM SRN
   PA/NJ SWD TO THE CAROLINAS.  UVVS WITH THE CLOSED UPPER LOW OVER
   THE UPPER OH VALLEY WILL CONTINUE TO SPREAD ACROSS THE MID ATLANTIC
   STATES THIS AFTERNOON/EARLY EVENING AIDING IN CONTINUED STRONG TO
   SEVERE STORMS.  DAMAGING WINDS/HAIL WILL BE THE PRIMARY THREATS.
   
   ...AL/GA...
   THUNDERSTORMS WILL CONTINUE TO DEVELOP WITHIN A MODERATELY UNSTABLE
   AIR MASS.  HOWEVER...GENERALLY WEAK DEEP LAYER SHEAR WILL FAVOR
   PULSE-TYPE STORMS WITH MICROBURSTS BEING THE PRIMARY THREAT...GIVEN
   HIGH WET-BULB ZERO HEIGHTS.
   
   ...WRN SD/CENTRAL HIGH PLAINS...
   WV IMAGERY SHOWS A SHORT WAVE TROUGH MOVING EWD THROUGH WRN SD
   EARLY THIS AFTERNOON AIDING IN CONVECTIVE DEVELOPMENT ACROSS THE
   BLACK HILLS REGION.  WEAK INSTABILITY COMBINED WITH 30-35 KT OF
   DEEP LAYER SHEAR BEING ENHANCED BY STRONGER FLOW ON THE SRN
   PERIPHERY OF THE SHORT WAVE TROUGH WILL SUPPORT AN ISOLATED HAIL
   THREAT...WITH LARGE SURFACE TEMPERATURE-DEWPOINT SPREADS ALSO
   FAVORING ISOLATED DAMAGING WIND GUSTS.
    
   FURTHER WEST...VIS IMAGERY SHOWS NUMEROUS THUNDERSTORMS OVER THE
   HIGHER TERRAIN OF CO WITH ISOLATED CONVECTION NWD OVER WY.  25-30
   KT OF WLY MID-LEVEL FLOW FROM WY INTO SD WILL SUPPORT A GREATER
   POTENTIAL FOR ORGANIZED STORMS OVER THIS AREA WHERE OBJECTIVE
   ANALYSES SHOW AN AXIS OF MODERATE INSTABILITY FROM ERN WY SEWD TO
   WRN NEB/NWRN KS.
   
   ..PETERS.. 06/12/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0100Z