

695 

WWUS20 KWNS 262148

SEL0

SPC WW 262148

COZ000-NEZ000-270400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 520

NWS STORM PREDICTION CENTER NORMAN OK

450 PM CDT FRI JUN 26 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHEAST COLORADO

       PARTS OF WESTERN AND CENTRAL NEBRASKA



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 450 PM UNTIL

1100 PM CDT.



TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTHEAST OF AKRON

COLORADO TO 15 MILES NORTHWEST OF VALENTINE NEBRASKA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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 515...WW 516...WW

517...WW 518...WW 519...



DISCUSSION...SHEAR AND MDT INSTABILITY ARE IN PLACE ACROSS THE WATCH

AREA TO SUPPORT SUPERCELLS ALONG WITH TORNADOES.  CURRENT SEVERE

STORMS WILL DEVELOP/MOVE NEWD FROM NERN CO INTO NEB.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 25020.





...HALES

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