SWODY3
SPC AC 040725
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0225 AM CDT FRI SEP 04 2009
VALID 061200Z - 071200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
PATTERN WILL UNDERGO VERY LITTLE CHANGE SUNDAY. UPPER TROUGH WILL
CONTINUE TO PROGRESS EWD THROUGH THE NWRN STATES...NRN ROCKIES AND
INTO THE NRN HIGH PLAINS ACCOMPANIED BY A COLD FRONT THAT WILL MOVE
THROUGH MUCH OF MT. RIDGE AXIS WILL EXTEND FROM THE SRN AND CNTRL
ROCKIES THROUGH THE NRN PLAINS. DOWNSTREAM A WEAK TROUGH AXIS WILL
PERSIST FROM THE GREAT LAKES SWWD INTO THE TN VALLEY AREA.
...MT...
MOISTURE WILL REMAIN LIMITED IN PRE-FRONTAL WARM SECTOR RESULTING IN
MLCAPE BELOW 500 J/KG DESPITE STEEP LOW-MID LEVEL LAPSE RATES.
ISOLATED TO WIDELY SCATTERED STORMS MAY DEVELOP...ESPECIALLY WITHIN
ZONE OF STRONGER MESOSCALE ASCENT ALONG FRONTAL ZONE WHERE MID-UPPER
FLOW WILL STRENGTHEN IN ASSOCIATION WITH EWD ADVANCING UPPER TROUGH.
INVERTED-V BOUNDARY LAYERS WILL SUPPORT A THREAT OF ISOLATED STRONG
WIND GUSTS. THE MARGINAL INSTABILITY SHOULD SERVE AS A LIMITING
FACTOR FOR A MORE ROBUST SEVERE THREAT.
...ELSEWHERE...
SCATTERED STORMS WILL LIKELY ONCE AGAIN DEVELOP OVER THE SWRN U.S.
AND ACROSS PARTS OF THE SRN PLAINS AND LOWER MS VALLEY. ISOLATED
STORMS COULD PRODUCE STRONG GUSTY WINDS...BUT WEAK FLOW ALOFT WILL
LIMIT POTENTIAL FOR AN ORGANIZED SEVERE THREAT.
..DIAL.. 09/04/2009
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