Saturday, December 1, 2007

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 010847
SWOD48
SPC AC 010846

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0246 AM CST SAT DEC 01 2007

VALID 041200Z - 091200Z

..SEVERE POTENTIAL IS NEGLIGIBLE INTO THE LATTER HALF OF THE COMING
WORK WEEK...THEREAFTER PREDICTABILITY BECOMES LOW...

MEDIUM RANGE FORECAST GUIDANCE INDICATES THAT ANOTHER SIGNIFICANT
COLD INTRUSION INTO THE EASTERN STATES WILL MAINTAIN AN AMPLIFIED
UPPER TROUGH INTO THE MIDDLE OF NEXT WEEK. THEREAFTER...THE PATTERN
IS FORECAST TO BECOME A BIT MORE ZONAL. AND...IT APPEARS PROBABLE
THAT THE STABILIZED BOUNDARY LAYER OVER THE GULF OF MEXICO WILL
MODIFY SUBSTANTIALLY BY NEXT WEEKEND. THIS WILL BE POISED TO RETURN
INTO CENTRAL STATES...BUT THE SPREAD AMONG MODELS...AND MREF
MEMBERS...BECOMES QUITE LARGE CONCERNING UPSTREAM DEVELOPMENTS...
WITHIN A SOUTHERN BRANCH OF POLAR WESTERLIES EMANATING FROM THE
PACIFIC.

.KERR.. 12/01/2007

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