SPC AC 211722
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1122 AM CST FRI NOV 21 2008
   
   VALID 221200Z - 231200Z
   
   ...NO TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   A MORE ZONAL UPPER FLOW PATTERN SHOULD EVOLVE ACROSS THE CONUS BY
   DAY 2...AS THE NERN U.S. TROUGH/CLOSED LOW MOVES NWD INTO ERN
   CANADA/MARITIMES.  ONE SHORT WAVE TROUGH TRACKING FROM THE MID MO
   VALLEY SHOULD REACH THE SRN APPALACHIANS/CAROLINAS BY 12Z SUNDAY...
   WHILE THE NEXT UPSTREAM PACIFIC TROUGH MOVES INTO CENTRAL CANADA/NRN
   HIGH PLAINS.
   
   ANY LINGERING TSTM POTENTIAL ACROSS THE LOWER GREAT LAKES LATE DAY 1
   SHOULD DIMINISH SATURDAY MORNING AS MID LEVELS WARM IN THE WAKE OF
   THE DEPARTING NERN U.S. TROUGH.  THIS THREAT IS EXPECTED TO BE TOO
   MINIMAL TO INCLUDE A GENERAL TSTM AREA.  ELSEWHERE...A LARGE SURFACE
   ANTI-CYCLONE WILL SHIFT EWD AND COVER THE ERN HALF OF THE COUNTRY ON
   SATURDAY.  AN ACCOMPANYING RELATIVELY DRY AND COLD AIR MASS WILL
   INHIBIT TSTM DEVELOPMENT ALONG THE TRACK OF THE MID MO TROUGH.
   
   ..PETERS.. 11/21/2008