

000 

WWUS20 KWNS 252042

SEL4

SPC WW 252042

IAZ000-ILZ000-MOZ000-260100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 234

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT FRI APR 25 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN IOWA

       CENTRAL INTO NORTHERN ILLINOIS

       FAR NORTHEAST MISSOURI



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 340 PM UNTIL 800

PM CDT.



TORNADOES...HAIL TO 2 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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST OF

ROCKFORD ILLINOIS TO 40 MILES EAST OF QUINCY ILLINOIS.  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 231...WW 232...WW 233...



DISCUSSION...SEVERE THUNDERSTORMS HAVE REMAINED DISCRETE AND EVOLVED

AS SUPERCELLS OVER FAR ERN IA THIS AFTERNOON.  TORNADO THREAT HAS

LIKEWISE INCREASED AND HAVE REPLACED NRN 2/3S OF SVR TSTM WATCH 231

WITH THIS TORNADO WATCH.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

400. MEAN STORM MOTION VECTOR 25035.





...EVANS

