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374 

WWUS20 KWNS 110000

SEL4

SPC WW 110000

NEZ000-SDZ000-110700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 294

NWS STORM PREDICTION CENTER NORMAN OK

700 PM CDT THU JUN 10 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       LARGE PART OF WESTERN AND CENTRAL NEBRASKA

       SMALL PART OF SOUTHERN SOUTH DAKOTA



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 700 PM

UNTIL 200 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 100 STATUTE

MILES EITHER SIDE OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF

CHADRON NEBRASKA TO 25 MILES NORTH NORTHEAST OF BURWELL NEBRASKA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 292...WW 293...



DISCUSSION...THUNDERSTORMS WILL CONTINUE TO INCREASE EWD ACROSS THE

WATCH INTO A VERY UNSTABLE AND EXPECTED INCREASINGLY FAVORABLE SHEAR

ENVIRONMENT THRU THE EVENING.  WITH MLCAPES AOA 3000 J/KG AND THE

LOW LEVEL JET INCREASING TO 40 KT...SUPERCELLS ARE EXPECTED

INCLUDING LARGE HAIL AND POSSIBLE TORNADOES.



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 24025.





...HALES

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