[LeArc] Weather Watch : 9@ 5/6/02 10:33:00 AM

[learc@mailman.qth.net]

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


WWUS20 KWNS 061533
SEL9  
SPC WW 061524
ILZ000-MOZ000-062100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 239
STORM PREDICTION CENTER NORMAN OK
1024 AM CDT MON MAY 6 2002

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHERN AND CENTRAL ILLINOIS                           
   SOUTHERN AND EASTERN MISSOURI                           

EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1045 AM UNTIL 400
PM 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 ALONG AND 65 STATUTE MILES
EITHER SIDE OF A LINE FROM 70 MILES WEST NORTHWEST OF WEST PLAINS
MISSOURI TO 45 MILES EAST OF SALEM ILLINOIS.

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...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 238.  WATCH NUMBER 238 WILL NOT BE
IN EFFECT AFTER 1045 AM CDT.

DISCUSSION...MO/IL MCS IS BEING FED BY PLUME OF VERY MOIST/
UNSTABLE INFLOW ASSOCIATED WITH SSWLY LOW LEVEL JET OVER OK. 
SYSTEM ALSO APPEARS TO BE SUPPORTED BY ASCENT ON SRN FRINGE OF NRN
STREAM JET IMPULSE.  ACTIVITY MAY STRENGTHEN IN THE NEXT FEW HOURS
AS SURFACE HEATING CONTINUES...AND DEEP WLY SHEAR REMAINS AOA 45
KTS.

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 550.  MEAN STORM
MOTION VECTOR 29035.

...CORFIDI

;374,0874 361,0924 380,0932 393,0883;
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