ACUS48 KWNS 080932
SWOD48
SPC AC 080931
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0331 AM CST SUN DEC 08 2013
VALID 111200Z - 161200Z
...DISCUSSION...
MEDIUM-RANGE MODELS IN GENERAL/BROAD AGREEMENT THROUGH DAY 6 /FRI.
12-13/..MOVING A LARGE TROUGH ACROSS THE ERN U.S. AND THEN
OFFSHORE...WHILE A WEAKER/SRN-STREAM TROUGH MOVES INTO/ACROSS THE
SWRN QUARTER OF THE COUNTRY. DURING THIS TIME PERIOD...A
CONTINENTAL POLAR AIRMASS PREVAILING E OF THE ROCKIES WILL LARGELY
HINDER POTENTIAL FOR DEEPER CONVECTION OVER THE CONUS.
FROM DAY 6 ONWARD...MODELS DIVERGE WITH RESPECT TO EVOLUTION OF THE
UPPER PATTERN...AND RESULTING DECREASE IN CONFIDENCE WITH TIME
PRECLUDES ANY MEANINGFUL ATTEMPT AT A CONVECTIVE FORECAST THROUGH
THE END OF THE PERIOD.
..GOSS.. 12/08/2013
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