SWOD48
SPC AC 310931
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0331 AM CST THU DEC 31 2009
VALID 031200Z - 081200Z
...DISCUSSION...
00Z GEFS/ECMWF GUIDANCE IMPLY A VERY QUIET PATTERN FOR DEEP
CONVECTION/TSTMS THROUGH THE DAY 4-8 PERIOD. AS A LONGWAVE TROUGH
DOMINATES THE EASTERN HALF OF THE CONUS...THE PREVALENCE OF
ARCTIC/CANADIAN SURFACE HIGH PRESSURE ACROSS CENTRAL PORTIONS OF
CANADA/CONUS AND COLD CONTINENTAL TRAJECTORIES WILL KEEP THE SEVERE
POTENTIAL VERY LOW INTO THE MIDDLE PART OF NEXT WEEK.
..GUYER.. 12/31/2009
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