[LeArc] Weather Watch : 1@ 6/11/02 5:11:19 PM

Tue, 11 Jun 2002 17:11:19 -0500

The following weather message is provided by McDonough County E.S.D.A.

WWUS20 KWNS 112212
SEL1  
SPC WW 112203
ILZ000-KSZ000-MOZ000-120400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 411
STORM PREDICTION CENTER NORMAN OK
503 PM CDT TUE JUN 11 2002

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   WEST CENTRAL ILLINOIS                           
   FAR EASTERN KANSAS                             
   CENTRAL AND NORTHERN MISSOURI                           

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 515 PM UNTIL 1100
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 25 MILES NORTHWEST OF LEAVENWORTH KANSAS TO 20
MILES SOUTHEAST OF SAINT LOUIS MISSOURI.

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 410...

DISCUSSION...SMALL MCS WITH EMBEDDED SUPERCELLS NOW OVER CNTRL MO
EXPECTED TO MOVE GENERALLY ESE...WITH ATTENDANT THREAT FOR ISOLATED
TORNADOES/WET MICROBURSTS GIVEN RICH BOUNDARY LAYER MOISTURE/STEEP
MID LEVEL LAPSE RATES AND PRESENCE OF FAVORABLY-ORIENTED OUTFLOW
BOUNDARY.  OTHER STORMS/SUPERCELLS EXPECTED TO DEVELOP UPSTREAM
ACROSS NE KS/NW MO...WHERE A POTENT COMBINATION OF SHEAR/
INSTABILITY APPEARS TO BE PRESENT PER 20Z TOPEKA RAOB.  GIVEN
RELATIVELY WEAK LOW LEVEL SHEAR...TORNADO THREAT EXPECTED TO BE
MAXIMIZED INVOF BOUNDARY INTERSECTIONS. 

AVIATION...TORNADOES AND 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 600. 
MEAN STORM MOTION VECTOR 28030.

...CORFIDI

;403,0951 393,0900 373,0900 383,0951;
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