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000 

WWUS20 KWNS 052251

SEL7

SPC WW 052251

IAZ000-KSZ000-MNZ000-NEZ000-SDZ000-060600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 467

NWS STORM PREDICTION CENTER NORMAN OK

550 PM CDT THU JUN 5 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF WESTERN AND PART OF CENTRAL IOWA

       SMALL PART OF NORTH CENTRAL KANSAS

       PARTS OF SOUTHERN MINNESOTA

       MUCH OF EASTERN NEBRASKA

       PARTS OF SOUTHEASTERN SOUTH DAKOTA



EFFECTIVE THIS THURSDAY AFTERNOON AND FRIDAY MORNING FROM 550 PM

UNTIL 100 AM CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...

THUNDERSTORM WIND GUSTS TO 90 MPH...AND DANGEROUS LIGHTNING ARE

POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 150 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH OF ONEILL

NEBRASKA TO 30 MILES EAST OF FORT DODGE IOWA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU7).



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 461...SEVERE THUNDERSTORM WATCH NUMBER 463. WATCH

NUMBER 461 463 WILL NOT BE IN EFFECT AFTER 550 PM CDT.

CONTINUE...WW 462...WW 464...WW 465...WW 466...



DISCUSSION...WARM FRONT MOVING NWD INTO SERN SD AND WRN MN WITH A

VERY UNSTABLE AND HIGHLY SHEARED WARM SECTOR AHEAD OF SEVERE

THUNDERSTORMS WRN PORTION OF WATCH.  WITH THE APPROACH OF THE

VIGOROUS S/WV TROUGH AND 80-100KT MID LEVEL WIND

MAX...SUPERCELLS/BOW ECHOES WILL CONTINUE TO DEVELOP AND MOVE VERY

RAPIDLY NEWD THRU THE WATCH THIS EVENING.  TORNADOS POSSIBLY STRONG

AND VERY DAMAGING WINDS CAN BE EXPECTED.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 80 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 22055.





...HALES

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