

441 

WWUS20 KWNS 190023

SEL2

SPC WW 190023

TXZ000-190300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 602

NWS STORM PREDICTION CENTER NORMAN OK

725 PM CDT SAT JUL 18 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST TEXAS



EFFECTIVE THIS SATURDAY EVENING FROM 725 PM UNTIL 1000 PM CDT.



HAIL TO 2 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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES WEST OF

LUBBOCK TEXAS TO 40 MILES SOUTH SOUTHEAST OF CHILDRESS TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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.



OTHER WATCH INFORMATION...CONTINUE...WW 601...



DISCUSSION...STRONG/SEVERE STORMS OVER THE TEXAS PANHANDLE ARE

EXPECTED TO CONTINUE MOVING SWD 25 KT...WITH POTENTIAL FOR SOME

ACCELERATION IF A COLD POOL STRENGTHENS SUFFICIENTLY TO ENHANCE

FORWARD MOTION OF THE GUST FRONTS.  JAYTON PROFILER SHOWS STRONGLY

VEERING WIND PROFILE WITH HEIGHT AND 50 KT SHEAR IN THE LOWEST 6

KM...WHICH WILL PROMOTE OCCASIONAL SUPERCELL STRUCTURES AND AID IN

MAINTENANCE OF SEVERE STORMS.



AVIATION...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 35025.





...WEISS

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