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000 

WWUS20 KWNS 050148

SEL6

SPC WW 050148

COZ000-IAZ000-KSZ000-MOZ000-NEZ000-050900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 456

NWS STORM PREDICTION CENTER NORMAN OK

850 PM CDT WED JUN 4 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHEAST COLORADO

       PARTS OF SOUTHWEST IOWA

       PARTS OF NORTHERN KANSAS

       SMALL PART OF NORTHWEST MISSOURI

       LARGE PART OF SOUTHERN NEBRASKA



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 850 PM

UNTIL 400 AM CDT.



TORNADOES...HAIL TO 2.5 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 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTHWEST OF

BURLINGTON COLORADO TO 30 MILES EAST NORTHEAST OF SHENANDOAH

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 451. WATCH NUMBER 451 WILL NOT BE IN EFFECT AFTER

850 PM CDT. CONTINUE...WW 448...WW 453...WW 454...WW 455...



DISCUSSION...SEVERE STORMS/SUPERCELLS WILL CONTINUE DEVELOPING

VICINITY OF E/W FRONTAL ZONE. SHEAR PROFILES AND INCREASING LOW

LEVEL JET WILL MAINTAIN TORNADO POTENTIAL WITH ANY SUPERCELL WELL

INTO THE NIGHT.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 26030.





...HALES

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