SWOD48
SPC AC 050923
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0323 AM CST MON JAN 05 2009
VALID 081200Z - 131200Z
...DISCUSSION...
LATEST MEDIUM-RANGE GUIDANCE IS IN GENERALLY GOOD AGREEMENT IN THE
EVOLUTION OF THE LARGE-SCALE PATTERN THROUGH THE EXTENDED PERIOD.
THE NEXT UPSTREAM TROUGH WILL MOVE INTO THE INTERMOUNTAIN WEST ON D4
/THU JAN 8TH/ BEFORE AMPLIFYING AND EVENTUALLY CONTRIBUTING TO THE
DEVELOPMENT OF ANOTHER HIGH AMPLITUDE TROUGH OVER THE ERN CONUS BY
THE END OF THE FORECAST PERIOD.
IN THE LOW LEVELS...A STRONG COLD FRONT WILL SURGE SEWD THROUGH THE
GREAT PLAINS AND UPPER GREAT LAKES ON D5 /FRI JAN 9TH/...AND
EVENTUALLY THE REMAINDER OF THE CONUS /EXCEPT PERHAPS THE FL
PENINSULA/ BY THE END OF D6 /SAT JAN 10TH/. THIS FRONT WILL
ENCOUNTER MOIST AIR MASS OVER ERN PARTS OF THE SRN PLAINS EWD ALONG
THE GULF COAST STATES WHERE TSTMS ARE LIKELY. HOWEVER...THE QUALITY
OF MOISTURE RETURN APPEARS SOMEWHAT MARGINAL WHICH WILL LIMIT THE
POTENTIAL FOR A MORE SIGNIFICANT SEVERE WEATHER EVENT.
THEREFORE...NO AREAS WILL BE DELINEATED.
..MEAD.. 01/05/2009
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