University Operations Center (UOC)
This is an automatically generated special information alert from the UT Tyler Office of Emergency Management:
WWUS20 KWNS 161942
SEL5
SPC WW 161942
OKZ000-TXZ000-170300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 155
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT THU APR 16 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
OKLAHOMA PANHANDLE
WEST TEXAS INCLUDING THE PANHANDLE
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
1000 PM CDT.
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH OF
GUYMON OKLAHOMA TO 50 MILES SOUTH SOUTHEAST OF LUBBOCK TEXAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
DISCUSSION...THUNDERSTORMS WILL CONTINUE TO INCREASE IN COVERAGE AND
INTENSITY THIS AFTERNOON AND EARLY EVENING AS SHORTWAVE TROUGH OVER
NM APPROACHES REGION. STEEP MID LEVEL LAPSE RATES...MODERATE MUCAPE
VALUES...AND FAVORABLE EFFECTIVE SHEAR SUGGEST A RISK OF SUPERCELLS
CAPABLE OF LARGE HAIL AND DAMAGING WINDS. POTENTIAL FOR ISOLATED
TORNADOES COULD ALSO INCREASE THIS EVENING WHEN AN UPGRADE TO A
TORNADO WATCH MIGHT NEED TO BE CONSIDERED.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 24035.
...HART
WWWW
P. Low/UOC
END OF ALERT
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