SWOD48
SPC AC 150828
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0328 AM CDT TUE APR 15 2008
VALID 181200Z - 231200Z
..DISCUSSION...
MODELS AGREE THAT UPPER TROUGH MOVING ACROSS THE CENTRAL U.S. DAY 3
WILL EVOLVE INTO A CLOSED LOW AND CONTINUE EWD INTO THE ERN
CONUS...AHEAD OF EXPANDING WRN U.S. TROUGH. HOWEVER...SIGNIFICANT
DIFFERENCES IN TIMING AND LOCATION EXIST AMONGST THE MODELS WITH
RESPECT TO THIS LOW. THIS COMBINED WITH WHAT SHOULD BE ONLY A VERY
MODEST RETURN OF MOISTURE AHEAD OF THIS SYSTEM PRECLUDES
HIGHLIGHTING ANY THREAT AREAS.
MEANWHILE...FAIRLY SUBSTANTIAL MODEL DIFFERENCES ARE ALSO APPARENT
WITH RESPECT TO THE EVOLUTION OF THE LARGE-SCALE WRN TROUGH LATER IN
THE FORECAST PERIOD...AS WELL AS WITH SMALLER-SCALE FEATURES
EJECTING INTO THE CENTRAL CONUS WITHIN THE BROADER CYCLONIC FLOW
AHEAD OF THIS FEATURE. THOUGH IT APPEARS THAT SOME DEGREE OF SEVERE
POTENTIAL EXISTS OVER A MULTIPLE-DAY PERIOD ACROSS PARTS OF THE
PLAINS BEGINNING ROUGHLY DAY 6...WILL NOT HIGHLIGHT ANY THREAT AREAS
ATTM.
.GOSS/COOK.. 04/15/2008
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