

000 

WWUS20 KWNS 180715

SEL6

SPC WW 180715

KSZ000-OKZ000-181500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 566

NWS STORM PREDICTION CENTER NORMAN OK

215 AM CDT WED JUN 18 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN KANSAS

       NORTHERN OKLAHOMA



EFFECTIVE THIS WEDNESDAY MORNING FROM 215 AM UNTIL 1000 AM CDT.



HAIL TO 1.5 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTHWEST OF

HUTCHINSON KANSAS TO 35 MILES SOUTHWEST OF ENID OKLAHOMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU6).



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 564...WW 565...



DISCUSSION...NRN KS MCS EXPECTED TO CONTINUE SSE ALONG INSTABILITY

AXIS INTO NRN/CNTRL OK.  ALTHOUGH SYSTEM WILL MOVE INTO REGION OF

GRADUALLY WEAKER MEAN FLOW WITH SWD EXTENT...IT WILL ENCOUNTER

CORRESPONDINGLY GREATER PWS.  OVERALL SETUP...INCLUDING POSSIBLE UVV

ASSISTANCE FROM WEAK UPR IMPULSE NOW IN CNTRL NEB...SUGGESTS

PERIODIC LOCALLY DMGG DOWNBURST WINDS...IN ADDITION TO MARGINALLY

SVR HAIL.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 34040.





...CORFIDI

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