SPC AC 100902
   
   DAY 3 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0402 AM CDT WED SEP 10 2003
   
   VALID 121200Z - 131200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   LARGE SCALE TROUGH OVER THE WRN STATES WILL CONTINUE TO EDGE SLOWLY
   E THIS PERIOD AS SHORTWAVE IMPULSE NOW OVER NV/UT EJECTS NE ACROSS
   MN/WI AND THE UPR GRT LKS INTO CANADA. WEAK POSITIVE TILT TROUGH
   EXPECTED TO DEVELOP OVER THE SRN RCKYS/HI PLNS ON THURSDAY SHOULD
   SETTLE SLOWLY S AND E ACROSS TX ON FRIDAY...WITH LITTLE CHANGE IN
   INTENSITY.
   
   AT LOWER LEVELS...COLD FRONT ASSOCIATED WITH MN/WI DISTURBANCE
   SHOULD WEAKEN AS IT MOVES E ACROSS THE UPR MS VLY...AHEAD OF A NEW
   COLD FRONT DROPPING S INTO THE NRN RCKYS/PLNS. TRAILING SRN PART OF
   MS VLY FRONT SHOULD BECOME NEARLY STATIONARY OVER E TX.  
   
   ...WI..
   A FEW STRONG STORMS MAY ACCOMPANY COLD FRONT CROSSING WI AND SE MN
   FRIDAY AFTERNOON...WHERE WEAK SURFACE-BASED INSTABILITY SHOULD
   DEVELOP WITHIN AXIS OF 40+ KT DEEP SWLY SHEAR ASSOCIATED WITH
   EJECTING UPPER IMPULSE.  BOTH MID LEVEL LAPSE RATES AND LOW LEVEL
   CONVERGENCE WILL...HOWEVER...LIKELY REMAIN WEAK.  THUS... POTENTIAL
   FOR SUSTAINED SEVERE APPEARS SLIM DESPITE LARGE SCALE FORCING
   ASSOCIATED WITH SHORTWAVE DISTURBANCE.
   
   ...E TX...
   A FEW STRONG AFTERNOON PULSE STORMS COULD AFFECT ERN AND SE TX ON
   FRIDAY.  HEATING IN THIS REGION SHOULD BOOST MEAN MLCAPE TO AOA 1000
   J/KG IN AREA OF WEAK SWLY SHEAR ALONG AND AHEAD OF STALLING FRONT.
   
   ..CORFIDI.. 09/10/2003
   
   ...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 3 OUTLOOK IS SCHEDULED FOR 1200Z