WATCHES: Tornado Watch Number 886

WWUS20 KWNS 152356
SEL6
SPC WW 152356
LAZ000-MSZ000-TXZ000-CWZ000-160700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 886
NWS STORM PREDICTION CENTER NORMAN OK
555 PM CST TUE NOV 15 2011

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

SOUTHWEST AND CENTRAL LOUISIANA
SOUTHWEST MISSISSIPPI
EXTREME SOUTHEAST TEXAS
COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON AND WEDNESDAY MORNING FROM 555
PM UNTIL 100 AM 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 30 MILES NORTH OF ALEXANDRIA
LOUISIANA TO 30 MILES SOUTHWEST OF INTRACOASTAL CITY LOUISIANA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).

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...BROKEN BAND OF STRONG/SEVERE STORMS WILL CONTINUE
SPREADING EWD/NEWD FROM SE TX INTO SW/W CENTRAL LA THIS EVENING...IN
ADVANCE OF A MIDLEVEL TROUGH EJECTING NEWD OVER THE UPPER TX COAST.
OTHER DISCRETE STORMS SHOULD ALSO CONTINUE TO DEVELOP ALONG THE
MOIST AXIS INTO S CENTRAL LAT. A MOIST LOW-LEVEL ENVIRONMENT WILL
MAINTAIN WEAK-MODERATE INSTABILITY THROUGH THE EARLY OVERNIGHT
HOURS...AND DEEP-LAYER SHEAR WILL BE FAVORABLE FOR SUPERCELLS. THE
STRONGER STORMS WILL POSE A RISK FOR ISOLATED DAMAGING GUSTS...AS
WELL AS A TORNADO OR TWO GIVEN EFFECTIVE SRH OF 150-250 M2/S2.

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 500.
MEAN STORM MOTION VECTOR 23025.

...THOMPSON

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