DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 250946
SWOD48
SPC AC 250946

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0346 AM CST TUE DEC 25 2012

VALID 281200Z - 021200Z

...DISCUSSION...
THE MEDIUM RANGE MODELS BEGIN THE DAY 4 TO 8 PERIOD WITH AN
UPPER-LEVEL TROUGH FROM THE CNTRL PLAINS EXTENDING SWWD INTO THE
FOUR CORNERS REGION. THE MODELS MOVE THIS SYSTEM EWD INTO THE SRN
PLAINS ON FRIDAY/DAY 4. THUNDERSTORMS WILL BE POSSIBLE ACROSS THE
LOWER MS VALLEY AND CNTRL GULF COAST STATES FRIDAY AND FRIDAY NIGHT
AS A LOW-LEVEL JET DEVELOPS AHEAD OF THE APPROACHING TROUGH. THE
POTENTIAL FOR THUNDERSTORM ACTIVITY WILL CONTINUE EWD INTO THE ERN
GULF COAST STATES AND FL ON SATURDAY/DAY 5. WEAK INSTABILITY AND
SOMEWHAT LIMITED MOISTURE RETURN IN THE GULF COAST STATES IS
EXPECTED TO KEEP ANY SEVERE THREAT ISOLATED IN NATURE FROM FRIDAY
THROUGH SATURDAY.

..BROYLES.. 12/25/2012

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