SWOD48
SPC AC 240922
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0322 AM CST SUN FEB 24 2008
VALID 271200Z - 031200Z
..DISCUSSION...
SHORTWAVE TROUGH EVOLVING FROM UPPER LOW NOW AFFECTING NRN CA -- AS
WELL AS SUBSEQUENT PERTURBATIONS INITIALLY OVER WRN CANADA -- WILL
CONTRIBUTE TO POSITIVELY TILTED...SYNOPTIC SCALE TROUGH OVER ERN
NORTH AMERICA DAY-4/27-28 FEB. ASSOCIATED DEEP/COLD/LOW-LEVEL FROPA
OVER GULF WILL INHIBIT POTENTIAL FOR ANY WELL-ORGANIZED SVR EPISODES
IN ITS WAKE FOR A FEW DAYS THEREAFTER. CONSIDERABLE TRACK/AMPLITUDE
DISCREPANCIES THEN EXIST AMONGST MREF/ECMWF AND OPERATIONAL GFS
PACKAGES WITH NEXT SIGNIFICANT PERTURBATION -- SRN STREAM SHORTWAVE
PROGGED OVER S-CENTRAL CONUS OR NRN MEX AROUND DAYS 6-7...29 FEB-2
MAR. THEREFORE MOST APPROPRIATE CATEGORICAL LABEL ATTM
IS...PREDICTABILITY TOO LOW.
.EDWARDS.. 02/24/2008
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