MESO: Mesoscale Discussion 2228

ACUS11 KWNS 260856
SWOMCD
SPC MCD 260855
GAZ000-FLZ000-ALZ000-261000-

MESOSCALE DISCUSSION 2228
NWS STORM PREDICTION CENTER NORMAN OK
0255 AM CST WED DEC 26 2012

AREAS AFFECTED...PORTIONS OF SWRN GA AND CENTRAL FL PANHANDLE

CONCERNING...TORNADO WATCH 698...

VALID 260855Z - 261000Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 698 CONTINUES.

SUMMARY...TSTMS WILL LIKELY CLEAR REMAINING PORTIONS OF WW 698 BY
09Z. A LOCAL WFO EXTENSION MAY BE NEEDED ACROSS FL PANHANDLE PORTION
OF WW HOWEVER OVERALL TRENDS SUGGEST A NEW WW WILL NOT BE NEEDED.

DISCUSSION...LINE OF TSTMS CONTINUES TO MOVE EWD AND WILL EXIT
REMAINING VALID PORTIONS OF WW 698 BY AROUND 09Z. LATEST
MESOANALYSIS DATA INDICATES A NARROW AXIS OF MUCAPE OF 500-1000 J/KG
EXISTS ACROSS CENTRAL FL PANHANDLE AND INTO EXTREME SWRN GA. IN
ADDITION...0-1 KM SRH VALUES OF 350 M2/S2 OR HIGHER IN THIS REGION
SUGGESTS AT LEAST SOME POTENTIAL FOR LOW-LEVEL ROTATION FOR AN
ADDITIONAL 1 TO 2 HOURS. IN ADDITION...RADAR DATA FROM KTLH HAS
DETECTED BRIEF CIRCULATIONS WITHIN CONVECTIVE LINE. THUS...A LOCAL
WFO EXTENSION OF WW 698 TO THE EAST OF THE CURRENT AREA MAY BE
NEEDED.

ELSEWHERE...TSTMS WILL BE MOVING EAST OF THE INSTABILITY AXIS AFTER
09Z AND INTO A LESS FAVORABLE ENVIRONMENT. THUS..A NEW WW IS NOT
ANTICIPATED ATTM.

..BUNTING/MEAD.. 12/26/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FFC...TAE...

LAT...LON 32988432 32988357 29678485 29688555 32988432

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