SWOD48
SPC AC 030849
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0349 AM CDT FRI AUG 03 2007
VALID 061200Z - 111200Z
..DISCUSSION...
IN MID/UPPER LEVELS...OPERATIONAL U.S./EUROPEAN AND MREF/ENSEMBLE
GUIDANCE IS IN GOOD AGREEMENT ON GENERAL SYNOPTIC PATTERN CHANGES
ACROSS NORTHERN CONUS DURING PERIOD. THIS INCLUDES SEVERAL DAYS OF
GENERALLY ZONAL FLOW ACROSS NRN CONUS -- DOWNSTREAM FROM PACIFIC
NW/SWRN CANADA TROUGHING -- SUCCEEDED BY SOME STRENGTHENING OF NRN
PLAINS MEAN RIDGING AROUND DAYS 5-7/TUE-THU. SVR POTENTIAL WILL BE
STRONGLY TIED TO MCS EPISODES ASSOCIATED WITH LOW-AMPLITUDE
PERTURBATIONS OF THAT FLOW BELT...SOME OF WHICH MAY BE CONVECTIVELY
INDUCED/ENHANCED...AND TO SFC FEATURES ALSO UNDERGOING STRONG
MESOSCALE INFLUENCE.
.EDWARDS.. 08/03/2007
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