DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 300952
SWOD48
SPC AC 300951

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0351 AM CST SUN DEC 30 2012

VALID 021200Z - 071200Z

...DISCUSSION...
THE MEDIUM RANGE MODELS BEGIN THE DAY 4 TO 8 PERIOD WITH AN
UPPER-LEVEL TROUGH EXTENDING SWD ACROSS THE NRN AND CNTRL PLAINS AND
SWWD INTO THE SRN ROCKIES. THE MODELS DIG THIS FEATURE SEWD FROM
WEDNESDAY/DAY 4 INTO THURSDAY/DAY 5 AS A COLD FRONT MOVES SEWD
ACROSS THE ERN GULF COAST STATES. A SEVERE THREAT COULD DEVELOP NEAR
THE FRONTAL BOUNDARY THURSDAY AFTERNOON ACROSS THE ERN GULF COAST
STATES AND FLORIDA. THE MODELS CONTINUE TO DIG THE UPPER-LEVEL
TROUGH SEWD ACROSS THE TN VALLEY AND CNTRL GULF COAST STATES ON
FRIDAY/DAY 6. THUNDERSTORM DEVELOPMENT WILL BE POSSIBLE AGAIN FRIDAY
ALONG THE FRONT AS THE BOUNDARY MOVES SWD ACROSS THE FL PENINSULA.

ALTHOUGH THE POTENTIAL FOR SEVERE STORMS APPEARS TO BE ON THE LOW
SIDE FOR MOST OF THE DAY 4 TO 8 PERIOD...A SEVERE THREAT COULD
DEVELOP IN THE ERN GULF COAST STATES ON THURSDAY/DAY 5. DUE TO MODEL
UNCERTAINTY...PREDICTABILITY OF THE MAGNITUDE OF THE SEVERE THREAT
ON FRIDAY IS LOW ATTM.

..BROYLES.. 12/30/2012

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