

357 

WWUS20 KWNS 190007

SEL7

SPC WW 190007

KSZ000-190500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 187

NWS STORM PREDICTION CENTER NORMAN OK

710 PM CDT TUE MAY 18 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST KANSAS



EFFECTIVE THIS TUESDAY NIGHT FROM 710 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 55 MILES NORTH

NORTHWEST OF GARDEN CITY KANSAS TO 10 MILES SOUTHWEST OF LIBERAL

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 185...WW 186...



DISCUSSION...ISOLATED SEVERE THUNDERSTORMS ARE EXPECTED TO SPREAD

INTO SOUTHWEST KS THIS EVENING WITH AN INCREASING THREAT OF LARGE

HAIL IN STRONGER STORMS.  LOW LEVEL VERTICAL SHEAR IS FORECAST TO

STRENGTHEN THROUGH THE EVENING...BUT INCREASING CINH AFTER SUNSET

WILL LIKELY OFFSET RISK OF TORNADOES.



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 25030.





...HART

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