

000 

WWUS20 KWNS 172222

SEL1

SPC WW 172222

KSZ000-OKZ000-TXZ000-180500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 561

NWS STORM PREDICTION CENTER NORMAN OK

520 PM CDT TUE JUN 17 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST KANSAS

       OKLAHOMA PANHANDLE

       EASTERN TEXAS PANHANDLE



EFFECTIVE THIS TUESDAY AFTERNOON FROM 520 PM UNTIL MIDNIGHT 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 55

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH

NORTHWEST OF GARDEN CITY KANSAS TO 50 MILES SOUTHEAST OF AMARILLO

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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...



DISCUSSION...NUMEROUS INTENSE STORMS APPEAR TO BE ACQUIRING BETTER

ORGANIZATION AND SOME UPSCALE GROWTH ACROSS SOUTHEAST CO AND THE

NORTHWEST TX PANHANDLE ATTM. THIS ACTIVITY WILL CONTINUE TO DEVELOP

ACROSS AND INTO INSTABILITY AXIS FROM SOUTHWEST KS TO THE OK/TX

PANHANDLES OVER THE NEXT FEW HOURS. STRONGLY SHEARED FLOW THROUGHOUT

THE TROPOSPHERE WILL CONTRIBUTE TO STORM PERSISTENCE AND

ORGANIZATION WITH AT LEAST ONE SEVERE MCS LIKELY EVOLVING FROM THE

ONGOING CONVECTION. IN ADDITIONAL TO LARGE HAIL...AN INCREASING

THREAT OF DAMAGING WINDS SHOULD ACCOMPANY THIS ACTIVITY INTO THE

LATE EVENING.



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 34025.





...CARBIN

