SPC AC 130058
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0758 PM CDT MON APR 12 2004
   
   VALID 130100Z - 131200Z
   
   THERE IS A SLGT RISK OF SVR TSTMS TO THE RIGHT OF A LINE FROM 15 W
   PNS 20 N SEM 30 SSE HSV 30 W CHA 20 ENE CHA 10 NW AND SPA 40 NW SOP
   35 N RWI 20 NE ECG ...CONT... 10 NNE DAB SRQ.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 ESE GPT 35 ENE TUP
   65 E BWG 15 NNW UNI 20 NNW LBE 10 ESE IPT 35 ESE AVP 15 WSW JFK.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 ENE 63S 45 SSW LWS
   40 E BNO 20 E 4LW 35 SE MHS 45 WSW MHS 30 WNW MFR 50 NNE PDX 35 ENE
   BLI.
   
   ...THERE IS A SLGT RISK OF SVR TSTMS ERN AL/GA/NRN FL NEWD TO THE
   CAROLINAS...
   
   ...ERN AL/GA/NRN FL NEWD TO THE CAROLINAS...
   SHORT WAVE TROUGH...CURRENTLY OVER THE LOWER MS VALLEY PER WV
   IMAGERY...WILL TRACK ENEWD ACROSS THE CENTRAL GULF COAST STATES TO
   THE SRN APPALACHIANS/GA BY 12Z TUESDAY.  SURFACE LOW LOCATED OVER
   CENTRAL AL AT 00Z WILL MOVE NEWD TOWARD ERN TN/SWRN VA OVERNIGHT...
   AS THE TRAILING COLD FRONT SWEEPS EWD AND EXTENDS SWD ACROSS ERN GA
   TO NWRN FL AND NERN GULF BY THE END OF THE PERIOD.  RECENT /SINCE
   22Z/ INCREASE IN THUNDERSTORM COVERAGE FROM WRN GA/SERN AL TO THE
   NERN GULF INDICATES AN INCREASE IN LARGE SCALE ASCENT AHEAD OF LOWER
   MS VALLEY SHORT WAVE TROUGH...SPREADING EWD ACROSS THE WRN PORTION
   OF THE SLIGHT.
   
   ALTHOUGH SURFACE BASED CAPE VALUES WILL CONTINUE TO DECREASE THIS
   EVENING WITH THE LOSS OF DAY TIME HEATING...A STRENGTHENING SWLY LLJ
   TO 40-50 KT IN ADVANCE OF THE UPPER TROUGH WILL MAINTAIN MOISTURE
   ADVECTION/LOW-LEVEL DESTABILIZATION ACROSS THE SLIGHT RISK AREA. 
   INCREASING DEEP SWLY WINDS WITH 70+ KT AT 500 MB WILL RESULT IN
   STRONG DEEP LAYER SHEAR FOR ORGANIZED STORMS.  THE LARGE SCALE
   ASCENT AND DEEP LAYER SHEAR SPREADING ACROSS THE SERN STATES MAY BE
   STRONG ENOUGH TO OFFSET THE MARGINAL INSTABILITY...AND CONTINUE TO
   SUPPORT INCREASING THUNDERSTORM COVERAGE.  AS THE UPPER TROUGH MOVES
   ACROSS MS/AL...DEEP LAYER SHEAR VECTORS ARE EXPECTED TO BECOME
   ORIENTED PARALLEL TO THE EWD MOVING COLD FRONT.  THIS SUGGESTS
   STORMS SHOULD EVOLVE INTO A SQUALL LINE WITH WIND DAMAGE BECOMING
   THE PRIMARY THREAT OVERNIGHT.  THIS LINE OF STORMS IS PROGGED TO
   REACH WRN SC TO NWRN FL BY 12Z TUESDAY.  MARGINAL INSTABILITY MAY...
   HOWEVER...LIMIT THE COVERAGE OF SEVERE STORMS.
   
   THUNDERSTORMS OVER THE ERN GULF ARE EXPECTED TO SPREAD EWD OVERNIGHT
   ACROSS THE FL PENINSULA...BUT SHOULD REMAIN NON-SEVERE...GIVEN THE
   STABLE BOUNDARY LAYER ACROSS FL FROM EXTENSIVE CLOUD COVER AND
   ONGOING PRECIPITATION.
   
   ..PETERS.. 04/13/2004
   
   ...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