SPC AC 290042
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0742 PM CDT FRI MAY 28 2004
   
   VALID 290100Z - 291200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 SSW
   OFK 65 ENE ANW 40 NNW VTN 40 NNW RAP 35 NNE 4BQ 10 SE OLF 50 NNW ISN
   50 N MOT 40 WSW DVL 15 NNW FAR 20 NNW STC 25 WNW RST 35 SW ALO 45
   ENE OMA 15 SSW OFK.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 N SSI 15 NNW DHN
   40 ESE LUL 35 NNW BTR 15 NW LCH HOU 45 SSW CLL 20 ESE TPL 45 SSE DAL
   30 SSW PRX 45 ESE PGO 35 NNE LIT 30 S DYR 15 SW BNA 40 SSW LOZ 15 N
   5I3 40 WSW EKN 50 WNW MRB 35 E HGR 20 SSW ILG 25 ESE DOV.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 55 W RRT 35 NE BJI 30
   S EAU 20 NNE DBQ 15 SW MLI 30 NNW UIN 15 SW P35 15 NW FNB 20 NNW GRI
   30 ESE LBF 20 NNE GLD 25 N LHX 30 W ALS 55 S 4BL 40 S SGU 40 E DRA
   55 SE TPH 20 NE TPH 55 ENE U31 20 NNE BAM 70 E 4LW 60 SE RDM 40 E
   DLS 20 WSW EPH 50 NE 4OM.
   
   ...THERE IS A SLGT RISK OF SVR TSTMS FROM THE NRN PLAINS TO THE MID
   MS VALLEY...
   
   ...NRN PLAINS...
   
   LARGE SCALE HEIGHT FALLS APPEAR TO BE AFFECTING NRN/CNTRL ROCKIES
   THIS EVENING AS UPPER RIDGE SHIFTS DOWNSTREAM INTO THE MS VALLEY. 
   CONSIDERABLE SHOWERS/ISOLATED THUNDERSTORMS HAVE SPREAD ACROSS MUCH
   OF MT AND WY WELL WEST OF MAIN MOISTURE AXIS. 
   HOWEVER...STRENGTHENING WARM ADVECTION DUE TO INCREASING LLJ OVER
   THE CENTRAL PLAINS IS BEGINNING TO DRIVE AN EXPANDING AREA OF
   CONVECTION ACROSS SRN SD.  00Z SOUNDINGS ACROSS THE WARM SECTOR
   INDICATE A DEEP BOUNDARY LAYER...NEAR 600MB AT LBF...HAS AIDED
   INITIATION NEAR THE WARM FRONT.  WITH TIME ONGOING SUPERCELL
   ACTIVITY SHOULD GRADUALLY LIFT AND BECOME MORE ELEVATED AS DIURNAL
   COOLING AND STRENGTHENING LLJ FORCE NEW DEVELOPMENT NORTH OF THE
   BOUNDARY.  CONTINUED CLUSTERING MAY ALLOW A MCS TO DEVELOP OVER THE
   NEXT SEVERAL HOURS WITH A SLOW EWD PROPAGATION EXPECTED INTO THE MS
   VALLEY BY MIDNIGHT.
   
   AS SELY FLOW INCREASES ACROSS WRN ND INTO NERN MT CONVECTION MAY
   CONTINUE TO DEEPEN AND INTENSIFY.  DEEP LAYER SHEAR APPEARS
   SUPPORTIVE OF STORM ROTATION AS THUNDERSTORMS SPREAD ACROSS THE NRN
   HIGH PLAINS.  LARGE HAIL SHOULD BE THE PRIMARY SEVERE THREATS FOR
   MOST AREAS.
   
   ..DARROW.. 05/29/2004
   
   ...NOTICE...
   FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
   LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
   GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
   HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
   INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.
   
   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED FOR 0600Z