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766 

WWUS20 KWNS 151747

SEL5

SPC WW 151747

ILZ000-KSZ000-MOZ000-160100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 305

NWS STORM PREDICTION CENTER NORMAN OK

1250 PM CDT FRI MAY 15 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR WEST CENTRAL ILLINOIS

       FAR NORTHEAST KANSAS

       NORTHERN MISSOURI



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1250 PM UNTIL

800 PM 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 45 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 10 MILES SOUTH SOUTHWEST OF

SAINT JOSEPH MISSOURI TO 75 MILES EAST NORTHEAST OF COLUMBIA

MISSOURI.  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...THIS TORNADO WATCH REPLACES SEVERE

THUNDERSTORM WATCH NUMBER 304. WATCH NUMBER 304 WILL NOT BE IN

EFFECT AFTER 1250 PM CDT.



DISCUSSION...WARM FRONT IS GETTING MORE DEFINED E-W ACROSS NRN MO

JUST NORTH OF THE MO RIVER.  EXPECT CLUSTER OF STORMS TO EVOLVE INTO

A BOWING MCS OR CYCLIC HP-SUPERCELL MOVING ESEWD ALONG THIS BOUNDARY

THROUGH THE AFTERNOON AS AIR MASS DESTABILIZES AND WEAKENS CAP.

LARGE HAIL WILL BE COMMON WITH THE STRONGER CORES...EVEN NORTH OF

THE WARM FRONT WITH ELEVATED STORMS.  ACTIVITY NEAR AND SOUTH OF THE

BOUNDARY WILL HAVE ADDITIONAL TORNADO/DAMAGING WIND HAZARDS.



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 28035.





...EVANS

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