[LeArc] Weather Watch : 2@ 8/2/2003 4:34:55 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 022133
SEL2  
SPC WW 022130
ILZ000-MOZ000-030300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 832 
NWS STORM PREDICTION CENTER NORMAN OK 
430 PM CDT SAT AUG 2 2003

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

       CENTRAL ILLINOIS
       CENTRAL AND EAST CENTRAL MISSOURI

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 430 PM UNTIL
1000 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 50 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 55 MILES WEST OF COLUMBIA MISSOURI
TO 40 MILES EAST OF MATTOON 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.




DISCUSSION...SCATTERED STRONG/SEVERE STORMS WILL CONTINUE TO
MOVE/DEVELOP SEWD ACROSS CENTRAL IL ALONG AN OUTFLOW
BOUNDARY...WHILE ADDITIONAL STORMS DEVELOP WWD ALONG A COLD FRONT
INTO CENTRAL MO AND IN AN AREA OF TOWERING CUMULUS ACROSS E CENTRAL
MO.  THIS AREA IS IN ADVANCE OF A SPEED MAX OVER IA THAT IS ROTATING
SEWD AROUND THE LARGER GREAT LAKES MID LEVEL LOW.  THE COMBINATION
OF MLCAPE NEAR 2000 J/KG AND 0-6 KM SHEAR OF 30-35 KT WILL SUPPORT A
FEW PERSISTENT SEVERE STORMS...THE STRONGEST OF WHICH WILL DISPLAY
SUPERCELL CHARACTERISTICS.  EXPECT LARGE HAIL AND ISOLATED DOWNBURST
WINDS TO BE THE MAIN SEVERE THREATS THROUGH THE EVENING.

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 32015.


...THOMPSON

;393,0931 401,0873 384,0873 380,0931; 
WWWW