WATCHES: Tornado Watch Number 17

WWUS20 KWNS 261031
SEL7
SPC WW 261031
ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-261800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 17
NWS STORM PREDICTION CENTER NORMAN OK
420 AM CST THU JAN 26 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHWEST ALABAMA
WESTERN FLORIDA PANHANDLE
SOUTHEAST LOUISIANA
SOUTHEAST MISSISSIPPI
COASTAL WATERS

EFFECTIVE THIS THURSDAY MORNING FROM 420 AM UNTIL NOON CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 65 MILES WEST NORTHWEST OF
EVERGREEN ALABAMA TO 35 MILES SOUTHWEST OF BOOTHVILLE LOUISIANA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

DISCUSSION...TSTMS ALONG REMNANT SSW-NNE PRE-FRONTAL OUTFLOW
BOUNDARY EXTENDING FROM THE GULF OF MEXICO THROUGH SE LA /JUST W OF
NEW ORLEANS/ INTO SRN MS EXPECTED TO INCREASE DURING THE NEXT
SEVERAL HOURS AS COLD FRONT OVERTAKES ACTIVITY. ACCELERATION OF
COLD FRONT REFLECTS APPROACH OF SHORTWAVE TROUGH ATTENDANT TO
EJECTING NE TX UPR LOW. INCREASING LARGE SCALE ASCENT PROVIDED BY
THE TROUGH MAY ALSO FOSTER STORM DEVELOPMENT.
COMBINATION OF STRENGTHENING DEEP WIND FIELD...CONTINUED LOW LVL
MOISTURE INFLOW...AND...LATER THIS MORNING...SFC HEATING...COULD
SUPPORT BROKEN LINE SEGMENTS CONTAINING A FEW SUSTAINED
STORMS/SUPERCELLS. IN ADDITION...A FEW DISCRETE STORMS/SUPERCELLS
MAY FORM IN CONFLUENT LOW LVL FLOW AHEAD OF THE FRONTAL LINE
SEGMENTS. GIVEN RICH MOISTURE AVAILABILITY AND 40-50 KT 850-700 MB
FLOW...SETUP MAY YIELD LOCALLY DMGG WIND AND TORNADOES IN ADDITION
TO LOCALLY HEAVY RAIN.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 21035.

...CORFIDI

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