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607 

WWUS20 KWNS 170045

SEL0

SPC WW 170045

KSZ000-OKZ000-TXZ000-170600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 330

NWS STORM PREDICTION CENTER NORMAN OK

745 PM CDT WED JUN 16 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST KANSAS

       NORTHWEST OKLAHOMA

       NORTHEAST TEXAS PANHANDLE



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 745 PM

UNTIL 100 AM 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 EAST AND WEST OF A LINE FROM 30 MILES SOUTH

SOUTHEAST OF AMARILLO TEXAS TO 70 MILES EAST NORTHEAST OF LIBERAL

KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 325...WW 326...WW

327...WW 328...WW 329...



DISCUSSION...SMALL QUASI-LINEAR MCS APPEARS TO HAVE EVOLVED FROM

EARLIER DISCRETE STORMS THAT INITIATED OVER ERN NM. IT APPEARS THAT

THE COMPLEX IS BEING SUSTAINED IN PART BY SMALL MID LEVEL WIND

MAX/JET STREAK EMANATING OUT OF THE LARGER TROUGH ACROSS THE WRN

U.S. COLD POOL HAS BECOME BETTER DEFINED LAST HOUR WITH RECENT WIND

GUSTS AOA SEVERE LEVELS OF 50KT. AHEAD OF THIS CONVECTION...AN AXIS

OF STRONG SURFACE-BASED INSTABILITY EXISTS AND SHOULD ALLOW SOME OF

THE STORMS TO MAINTAIN SOME SEVERE WIND/HAIL POTENTIAL NEXT FEW

HOURS.



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 25035.





...CARBIN

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