SWOD48
SPC AC 300854
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0354 AM CDT SUN AUG 30 2009
VALID 021200Z - 071200Z
...PREDICTABILITY TOO LOW TO DELINEATE A SEVERE THREAT AREA...
AMPLIFICATION WITHIN AN INCREASINGLY COMPLEX SPLIT UPPER FLOW ACROSS
THE PACIFIC APPEARS UNDERWAY. JUST HOW THIS TRANSLATES DOWNSTREAM
INTO THE U.S. LATE THIS WEEK INTO NEXT WEEKEND IS HIGHLY
UNCERTAIN...AS LARGE VARIABILITY EXISTS AMONG MEDIUM RANGE MODELS
AND ENSEMBLES. SEVERE POTENTIAL IS EXPECTED TO REMAIN GENERALLY LOW
WITHIN A RATHER BENIGN WEAK FLOW REGIME THROUGH THE END OF THE
COMING WORK WEEK...BUT THIS COULD CHANGE ACROSS PARTS OF THE
PLAINS/MISSISSIPPI VALLEY BY LATE NEXT WEEKEND.
..KERR.. 08/30/2009
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