

062 

WWUS20 KWNS 072243

SEL5

SPC WW 072243

IAZ000-KSZ000-MOZ000-080500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 345

NWS STORM PREDICTION CENTER NORMAN OK

545 PM CDT SUN JUN 7 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH CENTRAL IOWA

       EXTREME EASTERN KANSAS

       NORTHERN MISSOURI



EFFECTIVE THIS SUNDAY AFTERNOON FROM 545 PM UNTIL MIDNIGHT 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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHEAST OF

DES MOINES IOWA TO 25 MILES SOUTH OF KNOB NOSTER 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...CONTINUE...WW 341...WW 342...WW

343...WW 344...



DISCUSSION...ISOLATED SUPERCELL THUNDERSTORMS CONTINUE TO INCREASE

ACROSS PARTS OF WESTERN MO AND SOUTH CENTRAL IA...AND WILL

OVERSPREAD THE WATCH AREA THROUGH THE EVENING.  STRONG INSTABILITY

AND FAVORABLE VERTICAL SHEAR PROFILES WILL PROMOTE A RISK OF VERY

LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES.



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

550. MEAN STORM MOTION VECTOR 25030.





...HART

