

705 

WWUS20 KWNS 252131

SEL4

SPC WW 252131

IAZ000-KSZ000-MOZ000-260300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 184

NWS STORM PREDICTION CENTER NORMAN OK

430 PM CDT SAT APR 25 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTH CENTRAL IOWA

       NORTHEAST KANSAS

       NORTHWEST AND NORTH CENTRAL MISSOURI



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 430 PM UNTIL

1000 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST OF

LEAVENWORTH KANSAS TO 25 MILES NORTHEAST OF KIRKSVILLE MISSOURI.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 182...WW 183...



DISCUSSION...SHORTWAVE TROUGH FOCUSING STRONG/SEVERE STORMS OVER

NERN KS AT 21Z WILL CONTINUE SUPPORTING SIMILAR DEVELOPMENT NEWD

ACROSS NRN MO/SRN IA THIS EVENING.  STORMS WILL MOST LIKELY REMAIN

NEAR AND NORTH SURFACE FRONT EXTENDING SW-NE ACROSS WW WITH PRIMARY

THREAT OF LARGE HAIL GIVEN MODERATE INSTABILITY AND MODEST DEEP

LAYER SHEAR.



AVIATION...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 500. MEAN STORM

MOTION VECTOR 24035.





...EVANS

