Tuesday, December 1, 2009

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 011859
SWOD48
SPC AC 011859

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1259 PM CST TUE DEC 01 2009

VALID 041200Z - 091200Z

...DISCUSSION...
LITTLE SEVERE POTENTIAL IS EVIDENT THROUGH THE MEDIUM RANGE...AS THE
PATTERN ALOFT GRADUALLY EVOLVES FROM HIGH-AMPLITUDE TROUGHING OVER
MOST OF THE U.S. TOWARD A MUCH FLATTER CYCLONIC/QUASI-ZONAL FLOW
REGIME BY THE END OF THE PERIOD.

WITH A STRONG FRONT HAVING PUSHED OFF THE ATLANTIC AND GULF COASTS
SCOURING OUT ANY HIGHER THETA-E LOW-LEVEL AIR...AND WITHOUT ANY
OBVIOUS HIGHER-AMPLITUDE SYSTEM ALOFT TO YIELD SIGNIFICANT SURFACE
CYCLOGENESIS AND SUBSEQUENT RETURN FLOW...POTENTIAL FOR ACTIVE
CONVECTIVE WEATHER APPEARS MINIMAL.

..GOSS.. 12/01/2009

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