SWOD48
SPC AC 150838
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0338 AM CDT SUN MAR 15 2009
VALID 181200Z - 231200Z
...DISCUSSION...
SEVERE POTENTIAL IS EXPECTED TO REMAIN LOW TO NON-EXISTENT THROUGH
THE DAY 4-8 PERIOD...AS AN UPPER TROUGH EXPANDS OVER -- AND THEN
PROGRESSES ACROSS -- THE ERN HALF OF THE CONUS...FOLLOWED BY THE
EXPANSION OF A TROUGH OVER THE ERN PACIFIC WHICH IS PROGGED TO MOVE
INTO THE WRN CONUS DAYS 7-8. SHOULD MEDIUM-RANGE MODEL FORECASTS
PROVE CORRECT...SEVERE POTENTIAL WOULD INCREASE ACROSS THE CENTRAL
CONUS JUST BEYOND THE END OF THE CURRENT FORECAST PERIOD. IN THE
MEAN TIME HOWEVER...A LACK OF AMPLE MOISTURE/INSTABILITY AHEAD OF
THE COLD FRONT MOVING SEWD ACROSS THE S CENTRAL AND ERN U.S. THROUGH
THE FIRST HALF OF THE PERIOD -- IN CONJUNCTION WITH THE INITIAL
UPPER TROUGH -- PRECLUDES THE LIKELIHOOD FOR APPRECIABLE SEVERE
WEATHER THIS PERIOD.
..GOSS.. 03/15/2009
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