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Jul-31-2003 0100 UTC Day 1 Convective Outlook
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0100 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 310100Z - 311200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM
   130 NE CMX 40 E ESC 40 NW MKG 15 SSE MKE 25 SSW RFD 30 NE OTM
   25 S TOP 25 ESE MHK 45 SE OMA 15 WSW LSE 10 SSW MSP 35 NNE RWF
   55 SW AXN 30 NNE ABR 40 WSW JMS 20 NNW JMS 30 SW GFK 45 S TVF
   30 ESE BJI 25 WSW ELO 25 ENE ELO.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 N MRY 35 SSE EKA
   25 SSW MFR 30 WSW 4LW 30 NE RNO 40 NE U31 40 N ELY 30 ESE DPG
   30 ESE OGD 50 ESE EVW 35 SSE RWL 20 NE CYS 35 SE AIA 40 S ANW
   15 ESE OFK 35 W SPW 30 ENE BKX 50 SE BIS 50 NNE MOT.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 70 SSW GBN
   50 ESE BLH 30 NNE BLH 60 WNW EED 30 NNW DAG 30 SSW DAG 15 S IPL.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 50 ESE ANJ
   20 ESE BEH 35 SSW CGX 20 WNW UIN 35 W COU 55 SSW SZL 20 W EMP
   25 N RSL 35 SSE GLD 15 S LAA 15 SW CAO 40 ESE CVS 75 NW ABI
   35 NNE MWL 20 E DUA 30 WNW PGO 25 NW FYV 20 SE SGF 10 SE VIH
   35 SSW STL 15 SE BLV 45 SSE MTO 15 S IND 20 WNW DAY 35 S FDY
   25 ENE TOL.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 WSW ERI 25 S FKL
   25 NE EKN 25 S SSU 35 SSW PSK 25 NNW GSO 25 E DAN 50 WSW RIC
   40 N RIC 40 NW SBY 10 SSW ACY.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 SE HUM 25 WSW BTR
   50 NNW BPT 45 WNW HOU 40 WNW VCT 20 NNW NIR ALI 15 ESE MFE.
   
   
   
   ...UPPER MS VALLEY/WRN GREAT LAKES...
   STRONG CLOSED/CUTOFF LOW WILL REMAIN NEARLY STATIONARY ACROSS NRN
   MN TONIGHT WITH COMPACT IMPULSES AND ASSOCIATED SPEED MAXIMA
   ROTATING CYCLONICALLY AROUND THIS FEATURE ATOP WARM/UNSTABLE
   AIRMASS FROM CNTRL MN ACROSS WI AND LAKE MI/UPPER MI. ZONE OF
   MODEST LOW LEVEL WARM AIR ADVECTION/ASCENT COINCIDENT WITH SURFACE
   INSTABILITY AXIS FROM NERN KS NEWD TO WI SHOULD CONTINUE TO PROMOTE
   TSTM DEVELOPMENT INTO THE NIGHT. EVENING SOUNDINGS WITHIN THIS AXIS
   INDICATED 0-6KM SHEAR OF 30-40 KT AND FAVORABLY STEEP 850-500MB
   LAPSE RATES AROUND 7 C/KM SUPPORTIVE OF PERSISTENT/INTENSE UPDRAFTS
   AND HAIL. IN ADDITION TOP SOUNDING SHOWED WELL MIXED BOUNDARY LAYER
   AIRMASS WITH 30F T/TD SPREAD. ISOLD STORMS IN THIS ENVIRONMENT
   COULD PRODUCE STRONG...POSSIBLY SEVERE...DOWNDRAFTS.
   
   ...TX TO LOWER MS VALLEY...
   STRONG SURFACE THETA-E GRADIENT DEFINES EFFECTIVE FRONTAL ZONE FROM
   SAT AREA NEWD THROUGH EAST TX...ACROSS LA...AND INTO SWRN MS THIS
   EVENING WITH VERY WARM AND UNSTABLE AIRMASS ALONG/SOUTH OF THIS
   BOUNDARY. FRONTOGENESIS/CONVERGENCE AHEAD OF THE BOUNDARY AND
   MESOSCALE FORCING FOR ASCENT NEAR DEEPER COLD POOLS SHOULD SPUR
   ADDITIONAL CONVECTIVE DEVELOPMENT OVER THE NEXT FEW HOURS WITHIN
   WEAKLY CAPPED ENVIRONMENT. WHILE A FEW OF THESE STORMS MAY PRODUCE
   ISOLD DOWNBURSTS...EVENING SOUNDINGS DEPICT A VERY WEAKLY SHEARED
   WIND PROFILE WITH JAN AND LCH BOTH SHOWING WINDS AOB 10KT THROUGH
   300MB. FWD SOUNDING DOES SHOW A MID LEVEL NWLY CURRENT SUGGESTING
   FRONTAL ZONE MAY SHIFT SLOWLY SEWD TOWARD THE GULF COAST OVERNIGHT.
   
   ...SOUTHWEST...
   ESELY MEAN LAYER WIND AND WEAK ELY WAVES CONTINUE TO ENHANCE STORM
   DEVELOPMENT ACROSS SERN AND NRN AZ TONIGHT. WHILE FLOW...
   INSTABILITY...AND FORCING DO NOT APPEAR TO BE QUITE AS PRONOUNCED
   AS LAST NIGHT...A FEW STORMS COULD STILL PRODUCE ISOLD STRONG
   DOWNBURST WINDS...AND/OR MARGINALLY SEVERE HAIL.
   
   ..CARBIN.. 07/31/03
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0600Z
        
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