WATCHES: Tornado Watch Number 29

WWUS20 KWNS 311156
SEL9
SPC WW 311156
LAZ000-TXZ000-CWZ000-311900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 29
NWS STORM PREDICTION CENTER NORMAN OK
550 AM CST THU JAN 31 2008

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

SOUTHWEST AND SOUTH CENTRAL LOUISIANA
SOUTHEAST TEXAS
COASTAL WATERS

EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 550 AM UNTIL
100 PM CST.

TORNADOES...HAIL TO 1.5 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 115 STATUTE
MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH NORTHEAST OF
LAKE CHARLES LOUISIANA TO 35 MILES SOUTHEAST OF GALVESTON TEXAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU9).

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 EXPECTED TO INCREASE IN NUMBER AND STRENGTH IN
WAA ZONE INVOF NW GULF OF MEXICO SFC WAVE. OTHER STORMS EXPECTED TO
INTENSIFY FARTHER NW ALONG LEADING EDGE OF ASCENT ASSOCIATED WITH
STRONG TX PANHANDLE UPR VORT. VERY SHALLOW LAYER OF POLAR AIR NOW
OVER WW REGION EXPECTED TO ERODE STEADILY NWD THROUGH
MIDDAY...INCREASING CHANCES THAT STORMS IN THE NW GULF AND SE TX
WILL BECOME MORE NEARLY SFC-BASED AS THEY MOVE/DEVELOP NE INTO LA.
GIVEN STRENGTH OF WIND FIELD AND CONSIDERABLE SPEED/DIRECTIONAL
SHEAR...RESULTING SUPERCELLS COULD PRODUCE TORNADOES IN ADDITION TO
HIGH WIND AND HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 22040.

..CORFIDI

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