SWOD48
SPC AC 010858
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0358 AM CDT WED AUG 01 2007
VALID 041200Z - 091200Z
..DISCUSSION...
DETERMINISTIC AND ENSEMBLE MODELS SUGGEST UPPER PATTERN WILL EVOLVE
INTO A CLOSED UPPER LOW OVER THE WRN STATES WITH BELT OF STRONGER
WLYS IN ZONAL FLOW PATTERN OVER MUCH OF THE NRN TIER OF THE COUNTRY.
CONVECTIVE POTENTIAL FROM NRN PLAINS THROUGH GREAT LAKES WILL LIKELY
BE MODULATED BY A SERIES OF SHORTWAVE TROUGHS THAT WILL LIKELY MOVE
EWD THROUGH THIS BELT OF STRONGER FLOW. MOISTURE WILL LIKELY RETURN
NWD INTO THIS REGION IN VICINITY OF FRONTAL BOUNDARY FORECAST TO
EVOLVE INTO A MORE OR LESS E-W ORIENTATION BY DAYS 5-6. DETAILS
REGARDING WHEN AND WHERE BEST SEVERE THREAT WILL BE REMAIN SOMEWHAT
UNCERTAIN...BUT POTENTIAL WILL EXIST FOR ORGANIZED SEVERE STORMS TO
DEVELOP ALONG AND N OF THIS BOUNDARY AND SPREAD EWD DURING THIS
PERIOD.
.DIAL.. 08/01/2007
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