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Jul-10-2003 1630 UTC Day 1 Convective Outlook
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1630 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 101630Z - 111200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   45 W TCC 20 SW CVS 10 NNW HOB 30 W CNM 25 SSW ALM 25 ENE ONM
   35 SSE SAF 45 W TCC.
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   15 SW ERI 15 SSE PIT 45 ENE EKN 45 SSW DCA 15 ENE WAL ...CONT...
   25 SE SAV 30 SW TOI 35 ENE CLL 40 NW TPL 50 NNW FTW 40 N PRX
   60 W UOX 40 NE MKL 45 SSE CGX 35 NNE BEH 15 SSW MBL 25 ENE TVC
   10 ENE APN.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 WSW FHU
   45 SSE SOW 25 NNE GNT 15 SW ALS TAD 15 NW PVW 50 SSE CDS
   20 ENE MLC 50 SSW BLV DEC 15 NNE MMO 50 SW LSE 10 NE P24 55 N ISN
   ...CONT... 15 W MSS 15 ENE UCA 15 E MSV 20 E JFK.
   
   
   
   ...SYNOPSIS...
   
   VORT MAX OVER ERN WI WILL EJECT ENEWD THROUGH THE GREAT LAKES AS A
   STRONGER UPSTREAM VORT MAX MOVES INTO THE MEAN TROUGH POSITION. SRN
   EXTENSION OF UPPER TROUGH WILL CONTINUE EWD THROUGH THE OH VALLEY
   THIS AFTERNOON. AT THE SURFACE A COLD FRONT EXTENDS SWWD THROUGH
   THE MID MS VALLEY AND INTO THE SRN PLAINS FROM A SURFACE LOW IN ERN
   WI. A WARM FRONT EXTENDS SEWD FROM THE LOW THROUGH SRN MI...NRN OH
   AND INTO NRN VA.
    
   ...GREAT LAKES AND OH VALLEY AREA...
   
   WIDESPREAD CLOUDS WILL LIMIT OR DELAY DESTABILIZATION OVER MUCH OF
   THIS AREA TODAY. LOW LEVEL FLOW CONTINUES TO VEER OVER THE OH
   VALLEY IN PRE-FRONTAL WARM SECTOR AS THE SURFACE LOW DEEPENS AND
   BEGINS TO LIFT NEWD THROUGH THE GREAT LAKES. DESPITE THE LIMITING
   FACTORS...BREAKS IN CLOUDS TODAY WILL ALLOW SOME DESTABILIZATION...
   BUT WARM TEMPERATURES ALOFT AND MARGINAL LAPSE RATES SHOULD LIMIT
   OVERALL DEGREE OF INSTABILITY TO GENERALLY AOB 2000 J/KG MLCAPE.
   
   STRONGER STORMS ARE ALREADY DEVELOPING OVER KY ALONG REMNANT
   BOUNDARY AND E OF A SMALL MCV WHERE ATMOSPHERE HAS BECOME
   MODERATELY UNSTABLE. OTHER STORMS WILL MAY DEVELOP/INTENSIFY
   FARTHER N IN ZONE OF FAVORABLE LARGE SCALE ASCENT AS LOW CLOUDS MIX
   OUT...ESPECIALLY ACROSS PARTS OF MI INTO OH WHERE STRONGER LOW
   LEVEL CONVERGENCE WILL EXIST. 
   
   VEERING LOW LEVEL FLOW WITH TIME WILL LIMIT DEEP SHEAR TO AOB 30 KT
   OVER MUCH OF THE AREA. HOWEVER..MODERATE WLY FLOW ON SRN PERIPHERY
   OF UPPER TROUGH WILL BE SUFFICIENT FOR STORMS TO ORGANIZE INTO
   LINES WITH DAMAGING WIND THE MAIN THREAT. STRONGER SHEAR IS
   EXPECTED OVER PARTS OF LOWER MI SEWD INTO OH IN VICINITY OF WARM
   FRONT WHERE LOW LEVEL FLOW WILL REMAIN BACKED TO SELY...BUT
   SUPERCELL THREAT IN THIS AREA IS CONDITIONAL ON THE ABILITY OF THE
   LOW CLOUDS TO MIX OUT.
   
   ...SERN U.S....
   
   MORNING RAOB DATA SHOWED STRONG INSTABILITY AND MODERATELY STEEP
   LAPSE RATES OVER MUCH OF THE SERN U.S.. THE ATMOSPHERE WILL
   CONTINUE TO DESTABILIZE AS SURFACE HEATING CONTINUES WITH MLCAPES
   AROUND 3000 J/KG. A WELL DEFINED MCV WAS MOVING EWD THROUGH WRN TN
   AND STORMS MAY INTENSIFY AHEAD OF THIS FEATURE AS INSTABILITY
   INCREASES. OTHER STORMS ARE DEVELOPING ALONG NUMEROUS OUTFLOW
   BOUNDARIES AND FLOW IS SUFFICIENT FOR STORMS TO ORGANIZE INTO LINES
   OR LINE SEGMENTS. DAMAGING WIND IS THE MAIN THREAT.
   
   ...SRN NM...
   
   ELY UPSLOPE FLOW HAS DEVELOPED IN POST FRONTAL REGION AND THIS WILL
   MAINTAIN AXIS OF HIGHER DEWPOINTS OVER ERN NM. STORMS MAY DEVELOP
   OVER THE HIGHER TERRAIN AS THE ATMOSPHERE CONTINUES TO DESTABILIZE
   LATER THIS AFTERNOON. PRIMARY LIMITING FACTOR IS LARGE SCALE
   SUBSIDENCE ASSOCIATED WITH UPPER RIDGE AND NLY STEERING FLOW E OF
   UPPER RIDGE AXIS WHICH MAY LIMIT ABILITY OF STORMS TO DEVELOP EWD
   OVER THE LOWER TERRAIN AND INTO THE MOIST AXIS.
    
   ..DIAL.. 07/10/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 2000Z
        
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