

000 

WWUS20 KWNS 172317

SEL2

SPC WW 172317

TXZ000-180600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 562

NWS STORM PREDICTION CENTER NORMAN OK

615 PM CDT TUE JUN 17 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WEST TEXAS



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 615 PM

UNTIL 100 AM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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 45 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 558...WW 559...WW

560...WW 561...



DISCUSSION...SEVERAL INTENSE/SEVERE STORMS WILL DEVELOP SSEWD ACROSS

TX SOUTH PLAINS AREA THROUGH LATE THIS EVENING. ACTIVITY WAS

DEVELOPING WITHIN CORRIDOR OF STRONG INSTABILITY FOCUSED ON OUTFLOW

REINFORCED FRONTAL ZONE SITUATED GENERALLY NNW-SSE ACROSS THE

REGION. MOIST LOW LEVEL SELY/UPSLOPE FLOW TOPPED BY NWLY FLOW ALOFT

WILL LEAD TO SUFFICIENT SHEAR TO MAINTAIN TSTM ORGANIZATION. IN

ADDITION TO LARGE/DAMAGING HAIL...INITIALLY DISCRETE CONVECTION

COULD PRODUCE A BRIEF TORNADO OR TWO GIVEN LOCALLY LOWER LFC AND

HIGHER SHEAR NEAR THE FRONT. HOWEVER...WITH TIME...GREATER THREAT

SHOULD BECOME INTENSE WINDS AS THE STORMS MERGE INTO A SEVERE MCS

AND SYSTEM TRACKS SEWD ACROSS THE AREA.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 33035.





...CARBIN

