STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK 
   DAY 1 CONVECTIVE OUTLOOK...REF AWIPS GRAPHIC PGWE46 KWNS.
   
   VALID 082000Z - 091200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   45 NNE ROC 30 WSW ELM 10 SSW PSB 45 W EKN 25 ENE 5I3 45 NNE TYS
   CHA 30 NNE MSL 25 N SDF 30 SSE FWA 20 SSW AZO 20 N MBL 15 NNE PLN.
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   55 N GGW 65 NE BIL 25 SSE BIL 20 NW DLN 30 NNW 3DU 40 NW CTB.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 W YUM 50 SE EED
   10 ESE DAG 20 NNE EDW 30 NE FAT 50 SSW TVL 45 SW SVE 65 SSW 4LW
   60 NE 4LW ALW 55 N 4OM ...CONT... 60 N OLF 10 SSE MLS 35 S SHR
   15 WNW RIW 50 ENE MLD 55 NNE ENV 20 N U24 25 SSW CNY 25 SW GUC
   35 W LAR 40 SSE DGW 25 SSE CDR 15 WSW MHN 50 NE MCK 25 SSE RSL
   40 SW TUL 10 NNE HOT 40 WSW MEM 20 E CGI 20 SSW MTO 20 SE SPI
   15 W LWD 40 W YKN 35 SSW ABR 25 S FAR 45 ESE RRT ...CONT...
   25 S HUL 20 SW 3B1 25 W MWN 20 SSW RUT JFK ...CONT... 30 ENE CRP
   20 N ALI 40 SSE COT 20 WNW LRD.
   
   ...SYNOPSIS...
   INTENSE MID-LEVEL VORTICITY CENTER/LOW CONTINUES TO LIFT NEWD
   THROUGH THE GREAT LAKES THIS AFTERNOON WITH ATTENDANT SHORTWAVE
   TROUGH AND MID/UPPER-LEVEL JET STREAK TRANSLATING ACROSS THE OH
   VALLEY. TO THE NW...UPSTREAM SHORTWAVE TROUGH WILL PROGRESS SEWD
   THROUGH THE NRN ROCKIES.
   
   MEANWHILE...OCCLUDED SURFACE CYCLONE IS CURRENTLY LOCATED OVER WI
   WITH A SECONDARY LOW FORMING OVER W-CNTRL MI. PRIMARY FRONTAL ZONE
   NOW EXTENDS FROM THE MI LOW SWD THROUGH CNTRL KY/TN AND INTO THE
   LOWER MS VALLEY. 
     
   ...GREAT LAKES INTO THE OH VALLEY...
   SEVERAL BANDS OF VIGOROUS CONVECTION HAVE DEVELOPED THIS AFTERNOON
   ACROSS OH SWWD INTO KY/TN AND OVER LOWER MI. DEWPOINTS IN THE 60S
   AND DIURNAL HEATING HAVE ALLOWED THE WARM SECTOR AIRMASS TO
   DESTABILIZE WITH MLCAPES NOW AROUND 500-1000 J/KG. STRONG FORCING
   FOR ASCENT AHEAD OF MID-LEVEL LOW AND ASSOCIATED SHORTWAVE TROUGH
   WILL SUSTAIN THESE TSTMS EWD ACROSS THE LOWER GREAT LAKES/OH VALLEY
   INTO WRN NY/PA/WV LATER THIS AFTERNOON AND EVENING.
   
   PRESENCE OF MID AND UPPER-LEVEL JET STREAKS TRANSLATING NEWD ALONG
   AND N OF THE OH RIVER VALLEY IS RESULTING IN 50-60KTS OF 0-6KM
   SHEAR WHICH IS MORE THAN SUFFICIENT FOR INTENSE UPDRAFTS/
   SUPERCELLS. LINEAR FORCING ALONG COLD FRONT AND UNIDIRECTIONAL WIND
   PROFILES SUGGEST THAT DAMAGING WINDS ASSOCIATED WITH BOWING LINE
   SEGMENTS/LEWPS WILL BE THE PRIMARY SEVERE WEATHER THREAT.
   HOWEVER...CONCENTRATED AREA OF PRESSURE FALLS OBSERVED OVER
   CNTRL/SERN MI IS RESULTING IN LOCALLY BACKED SURFACE WINDS
   EFFECTIVELY INCREASING THE THREAT OF ISOLATED TORNADOES.
    
   FARTHER W ACROSS WI...PRESENCE OF COLD MID-LEVEL TEMPERATURES AND
   HIGH AMBIENT VERTICAL VORTICITY IN ASSOCIATION WITH UPPER
   LOW/VORTICITY CENTER WILL SUPPORT ISOLATED LARGE HAIL AND/OR A
   BRIEF TORNADO THROUGH THE REMAINDER OF THE AFTERNOON.
   
   PLEASE REFER TO MESOSCALE DISCUSSIONS 1260/1262 FOR ADDITIONAL
   INFORMATION.
   
   ...NRN ROCKIES...
   TSTMS ARE INCREASING EARLY THIS AFTERNOON OVER SERN BRITISH
   COLUMBIA/SRN ALBERTA INTO NRN MT AHEAD OF SHORTWAVE TROUGH DIVING
   SEWD INTO THE REGION. RUC FORECAST SOUNDINGS VALID FOR LATE
   AFTERNOON SHOW DEEPLY MIXED BOUNDARY LAYER CONDITIONS WITH MUCAPES
   OF 500-1000 J/KG. THUS...TSTMS SHOULD INCREASE IN COVERAGE/
   INTENSITY AS LARGE-SCALE FORCING FOR ASCENT INCREASES LATER THIS
   AFTERNOON INTO THIS EVENING. ALTHOUGH DAMAGING DOWNBURSTS WILL BE
   THE PRIMARY SEVERE WEATHER THREAT...STEEP-MID LEVEL LAPSE RATES AND
   RELATIVELY LOW WET-BULB ZERO HEIGHTS WILL SUPPORT ISOLATED LARGE
   HAIL. 
   
   PLEASE REFER TO MESOSCALE DISCUSSION 1261 FOR ADDITIONAL
   INFORMATION. 
   
   ...SWRN TX/SERN NM...
   LATEST VISIBLE SATELLITE IMAGERY INDICATE THE PRESENCE OF BILLOW
   CLOUDS IN THE BOUNDARY LAYER AS FAR W AS CROCKETT/TERRELL COUNTIES
   INDICATIVE OF STABLE BOUNDARY-LAYER CONDITIONS. FARTHER W...STRONG
   HEATING AND DEWPOINTS IN THE 50S HAVE ALLOWED FOR SOME AIRMASS
   DESTABILIZATION ACROSS THE MOUNTAINS OF SWRN TX AND THE HIGHER
   TERRAIN OF SERN NM. TSTMS DEVELOPING OVER THE HIGHER TERRAIN OF
   CHIHUAHUA MEXICO MAY MOVE ACROSS THE BORDER AND POSE AN ISOLATED
   LARGE HAIL/WIND THREAT TO ADJACENT FAR SWRN TX THIS AFTERNOON/
   EVENING. CONTINUED HEATING SHOULD ALLOW ADDITIONAL TSTMS TO DEVELOP
   THIS AFTERNOON...ESPECIALLY ALONG THE DAVIS NWD INTO THE GUADALUPE
   MOUNTAINS.
   
   ...SRN AZ/NM...
   AFTERNOON WATER VAPOR IMAGERY SHOWS SHORTWAVE TROUGH SLOWLY
   PROGRESSING NEWD ACROSS BAJA CA WITH AN ASSOCIATED AREA OF LARGE-
   SCALE ASCENT CURRENTLY MOVING INTO SRN AZ. LATEST RUC ANALYSIS
   FIELDS SUGGEST THAT THE AIRMASS FROM CNTRL AZ INTO SRN AZ HAS
   BECOME SLIGHTLY UNSTABLE WITH MLCAPES AROUND 500 J/KG. TSTMS MAY
   INCREASE IN COVERAGE AND STRENGTH THIS AFTERNOON AS AREA OF LARGE-
   SCALE ASCENT OVERSPREADS THE AREA. LARGE TEMPERATURE-DEWPOINT
   SPREADS INDICATE THE POTENTIAL FOR ISOLATED MICROBURSTS WITH THE
   STRONGEST STORMS.
   
   ..MEAD.. 06/08/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0100Z