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WWUS20 KWNS 120035

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SPC WW 120035

COZ000-KSZ000-NEZ000-120600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 299

NWS STORM PREDICTION CENTER NORMAN OK

735 PM CDT FRI JUN 11 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF EASTERN COLORADO

       PARTS OF NORTHWEST KANSAS

       SOUTHWEST NEBRASKA



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 735 PM

UNTIL 100 AM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF

NORTH PLATTE NEBRASKA TO 70 MILES SOUTH SOUTHEAST OF BURLINGTON

COLORADO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 298...



DISCUSSION...SUPERCELLS...SOME TORNADIC CONTINUE TO DEVELOP EWD

ACROSS ERN CO WITH ADDITIONAL ROTATING STORMS IN THE VERY UNSTABLE

AIR MASS FURTHER E INTO SWRN NEB/NWRN KS.  CONDITIONS WILL REMAIN

FAVORABLE FOR NOT ONLY LARGE HAIL BUT TORNADOES FOR SEVERAL MORE

HOURS AS ACTIVITY DEVELOPS SLOWLY EWD THROUGH AN UNSTABLE AIR MASS

WITH MLCAPES AOA 4000 J/KG.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 27025.





...HALES

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