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000 

WWUS20 KWNS 280446

SEL7

SPC WW 280446

ILZ000-KSZ000-MOZ000-281200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 627

NWS STORM PREDICTION CENTER NORMAN OK

1140 PM CDT FRI JUN 27 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN ILLINOIS

       SOUTH CENTRAL AND SOUTHEASTERN KANSAS

       CENTRAL AND SOUTHERN MISSOURI



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1140 PM

UNTIL 700 AM CDT.



HAIL TO 2.5 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 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTHWEST

OF HUTCHINSON KANSAS TO 35 MILES SOUTH SOUTHEAST OF SAINT LOUIS

MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 625...WW 626...



DISCUSSION...TSTMS FORMING ALONG STRENGTHENING WSWLY LLJ FROM S

CNTRL KS ENE INTO E CNTRL MO EXPECTED TO PERSIST THROUGH THE

OVERNIGHT.  GIVEN DEGREE OF INSTABILITY UPSTREAM...AND GLANCING

INFLUENCE OF AMPLIFYING UPR MS TROUGH AND ASSOCIATED WIND

FIELD...SETUP COULD SUPPORT PERIODIC SMALLER GROUPS OF SVR STORMS

WITH HAIL/DMG SFC WINDS.  OVERALL MOVEMENT OF THE COMPLEXES SHOULD

BE ESE...BUT WITH CONTINUED BACKBUILDING TENDENCIES TO THE WSW...AND

POSSIBLE SMALL ESE-MOVING BOWS IN CNTRL/ERN MO.



AVIATION...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 30030.





...CORFIDI

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