University Operations Center (UOC)
This is an automatically generated special information alert from the UT Tyler Office of Emergency Management:
WWUS20 KWNS 100123
SEL6
SPC WW 100123
ARZ000-LAZ000-TXZ000-100700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 126
NWS STORM PREDICTION CENTER NORMAN OK
825 PM CDT THU APR 9 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST ARKANSAS
NORTHWEST LOUISIANA
EXTREME NORTHEAST TEXAS
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 825 PM
UNTIL 200 AM 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 35 MILES WEST SOUTHWEST OF
TEXARKANA ARKANSAS TO 40 MILES EAST OF EL DORADO ARKANSAS. 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.
OTHER WATCH INFORMATION...CONTINUE...WW 123...WW 125...
DISCUSSION...THOUGH THE 00Z SHV SOUNDING REVEALED A SUBSTANTIAL CAP
IN ADVANCE OF THE DRYLINE ACROSS NE TX...IT APPEARS CONVECTIVE
DEVELOPMENT WILL BE AIDED FOR THE NEXT FEW HOURS BY ASCENT ON THE
SRN FRINGE OF THE MID LEVEL TROUGH EJECTING EWD OVER OK. THE
COMBINATION OF MODERATE INSTABILITY /MLCAPE OF 1000-1500 J/KG/ AND
STRONG VERTICAL SHEAR WILL CONTINUE TO SUPPORT A THREAT FOR
SUPERCELLS WITH A COUPLE OF TORNADOES...LARGE HAIL...AND DAMAGING
WINDS.
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 27035.
...THOMPSON
P. Low/UOC
END OF ALERT
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