Severe Local Storm Watch and Watch Cancellation 21:29:52.0529

THE UNIVERSITY OF TEXAS AT TYLER
University Operations Center (UOC)

This is an automatically generated special information alert from the UT Tyler Office of Emergency Management:

WWUS20 KWNS 110332
SEL2
SPC WW 110332
ARZ000-LAZ000-OKZ000-TXZ000-111100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 12
NWS STORM PREDICTION CENTER NORMAN OK
930 PM CST TUE FEB 10 2009

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

A LARGE PART OF WESTERN AND NORTHERN ARKANSAS
PARTS OF NORTHWESTERN LOUISIANA
PARTS OF EASTERN OKLAHOMA
A LARGE PART OF EASTERN TEXAS

EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 930 PM
UNTIL 500 AM CST.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 90 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF HARRISON
ARKANSAS TO COLLEGE STATION TEXAS. FOR A COMPLETE DEPICTION OF
THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU2).

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 9...TORNADO WATCH NUMBER 10. WATCH NUMBER 9 10 WILL
NOT BE IN EFFECT AFTER 930 PM CST. CONTINUE...WW 11...

DISCUSSION...INTENSE S/WV TROUGH AND ASSOCIATED VERY STRONG MID/UPR
WIND MAX WILL MOVE RAPIDLY EWD ACROSS SRN PLAINS TONIGHT. LINE OF
SEVERE THUNDERSTORMS WITH EMBEDDED TORNADIC SUPERCELLS HAS DEVELOPED
ERN OK INTO CENTRAL TX. IN ADDITION TO WIDESPREAD DAMAGING WINDS
ASSOCIATED WITH THE LINE...TORNADOS ARE ALSO LIKELY. IN ADDITION
POTENTIAL FOR MORE DISCRETE SUPERCELLS DEVELOPING AHEAD OF THE
SQUALL LINE WHICH WOULD RESULT IN AN INCREASE POTENTIAL FOR STRONG
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 80 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24045.

...HALES

P. Low/UOC
END OF ALERT