SPC AC 211603
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1003 AM CST SAT NOV 21 2009
   
   VALID 211630Z - 221200Z
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ......SERN LA...
   AS UPPER TROUGH SHIFTS EWD FROM THE INTERMOUNTAIN WEST INTO THE
   NRN/CENTRAL ROCKIES...UPPER LOW...OVER SRN TX THIS MORNING...IS
   FORECAST TO EJECT EWD THROUGH THE LOWER MS VALLEY REGION THROUGH THE
   PERIOD. SATELLITE AND SURFACE OBSERVATIONS SHOWED A SURFACE LOW WAS
   LOCATED ABOUT 100 MI SOUTH OF LCH...WITH A WARM FRONT STRETCHING
   FROM THE LOW ESEWD TO FL KEYS. THIS SURFACE LOW IS EXPECTED TO SHIFT
   MOSTLY EWD AND MAY EVEN CROSS THE FAR SERN PORTIONS OF LA LATE THIS
   AFTERNOON/EVENING. HOWEVER...SATELLITE IMAGERY SUGGESTS THE SURFACE
   LOW HAS ALREADY BECOME OCCLUDED AS A TRAILING COLD FRONT AND
   ASSOCIATED CONVECTION APPEAR TO BE SURGING EWD FASTER THAN THE LOW
   PRESSURE SYSTEM. THIS TREND SHOULD CONTINUE AS STRONGER WINDS
   ALOFT...OVER THE CENTRAL/NRN GULF WATERS...PUSH DRIER AND COOLER AIR
   EWD AND PINCH OFF THE RICHER GULF MOISTURE...SOUTH OF THE WARM FRONT
   AND EAST OF THE COLD FRONT IN THE GULF. THEREFORE...EVEN AS THE LOW
   MOVES INLAND LATER TODAY...ANY THREAT FOR SEVERE STORMS SHOULD
   REMAIN CONFINED SOUTH AND EAST OF LA OVER THE NRN GULF WATERS.
   
   ..IMY/SMITH.. 11/21/2009
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z