WATCHES: Tornado Watch Number 167

WWUS20 KWNS 042249
SEL7
SPC WW 042249
ALZ000-FLZ000-GAZ000-LAZ000-MSZ000-CWZ000-050500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 167
NWS STORM PREDICTION CENTER NORMAN OK
550 PM CDT FRI APR 4 2008

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

SOUTHERN ALABAMA
WESTERN FLORIDA PANHANDLE
SOUTHWEST INTO CENTRAL GEORGIA
SOUTHEAST LOUISIANA
SOUTHERN MISSISSIPPI
COASTAL WATERS

EFFECTIVE THIS FRIDAY AFTERNOON FROM 550 PM UNTIL MIDNIGHT CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST SOUTHWEST OF
BATON ROUGE LOUISIANA TO 35 MILES SOUTH OF MACON GEORGIA. 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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 164. WATCH NUMBER 164 WILL NOT BE IN EFFECT AFTER
550 PM CDT. CONTINUE...WW 165...WW 166...

DISCUSSION...STORMS WILL CONTINUE AHEAD OF
COMPOSITE-OUTFLOW/EFFECTIVE COLD FRONT SHIFTING SSEWD TOWARDS THE
CENTRAL GULF COAST EARLY THIS EVENING GIVEN VERY MOIST AND MODESTLY
UNSTABLE AIR MASS. DEEP LAYER SHEAR APPEARS SUFFICIENT FOR
SUPERCELLS AND SMALL LINES/BOWS AS MID LEVEL JET PERSISTS OVER THE
REGION. PRIMARY SEVERE THREATS WILL BE FROM ISOLATED DAMAGING WINDS
AND LARGE HAIL. HOWEVER...DISCRETE SUPERCELLS SHOULD SUPPORT AT
LEAST A RISK OF ISOLATED TORNADOES AHEAD OF THE FRONT WITH
MARGINALLY SUFFICIENT LOW LEVEL SHEAR FOR SUSTAINED LOW LEVEL
ROTATION.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24030.

..EVANS

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