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000 

WWUS20 KWNS 051944

SEL5

SPC WW 051944

IAZ000-KSZ000-NEZ000-060300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 235

NWS STORM PREDICTION CENTER NORMAN OK

240 PM CDT SAT MAY 5 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTHWEST IOWA

       LARGE PART OF NORTHEAST KANSAS

       MUCH OF EASTERN NEBRASKA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 240 PM UNTIL

1000 PM CDT.



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



DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF

NORFOLK NEBRASKA TO 40 MILES SOUTH OF MANHATTAN KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU5).



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 232...WW 233...WW 234...



DISCUSSION...SEVERE THUNDERSTORMS ARE INCREASING IN BOTH NUMBER AND

INTENSITY ACROSS CENTRAL NE/KS AS AIR MASS HAS BECOME VERY UNSTABLE.

 VERY FAVORABLE STRONG SHEAR PROFILES WILL SUPPORT TORNADIC

SUPERCELLS ACROSS THE WATCH AREA THRU THE EVENING.

SHEAR/INSTABILITY WILL SUPPORT POTENTIAL OF STRONG/LONG TRACK

TORNADOES.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

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

600. MEAN STORM MOTION VECTOR 22040.





...HALES

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