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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 615

NWS STORM PREDICTION CENTER NORMAN OK

515 PM CDT SAT JUL 9 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST KANSAS



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 515 PM UNTIL

1100 PM 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 45

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH

NORTHWEST OF GARDEN CITY KANSAS TO 70 MILES SOUTH SOUTHWEST OF

GARDEN CITY KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 614...



DISCUSSION...A SMALL CLUSTER OF SEVERE TSTMS OVER FAR SERN CO IS

EXPECTED TO MOVE INTO SWRN KS WITHIN THE HOUR WHERE IT WILL

ENCOUNTER A VERY HOT AND UNSTABLE AIR MASS.  RUC PROXIMITY SOUNDINGS

ACROSS THE WATCH AREA EXHIBIT STEEP LAPSE RATES...A DEEP SUB-CLOUD

LAYER AND DCAPE VALUES OF 1500-1600 J/KG.  AS SUCH...EXPECT STORMS

TO REMAIN CAPABLE OF DAMAGING DOWNBURST WINDS THROUGH THIS EVENING.



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 550. MEAN STORM

MOTION VECTOR 27030.





...MEAD

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