

743 

WWUS20 KWNS 080407

SEL8

SPC WW 080407

IAZ000-ILZ000-KSZ000-MOZ000-081000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 348

NWS STORM PREDICTION CENTER NORMAN OK

1110 PM CDT SUN JUN 7 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST IOWA

       WEST CENTRAL ILLINOIS

       EASTERN KANSAS

       NORTHERN AND CENTRAL MISSOURI



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1110 PM UNTIL

500 AM 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 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH

SOUTHWEST OF MANHATTAN KANSAS TO 40 MILES SOUTHEAST OF BURLINGTON

IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 343...WW 345...WW

346...WW 347...



DISCUSSION...SCATTERED STRONG/SEVERE THUNDERSTORMS WILL CONTINUE TO

TRACK EAST-NORTHEASTWARD ACROSS EASTERN KS AND WESTERN/CENTRAL MO

FOR THE NEXT FEW HOURS...EVENTUALLY SPREADING INTO WESTERN IL LATE

TONIGHT.  AMPLE INSTABILITY AND STRONG LOW LEVEL WARM ADVECTION WILL

MAINTAIN A RISK OF LOCALLY DAMAGING WINDS AND HAIL IN THE STRONGER

CELLS.



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 25030.





...HART

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