[LeArc] Weather Watch : 3@ 4/30/2003 10:55:48 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 010355
SEL3  
SPC WW 010355
ILZ000-INZ000-MOZ000-LMZ000-010900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 193 
NWS STORM PREDICTION CENTER NORMAN OK 
1055 PM CDT WED APR 30 2003

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

       CENTRAL AND NORTHEAST ILLINOIS
       NORTHWEST INDIANA
       NORTHEAST MISSOURI
       LAKE MICHIGAN

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1055 PM
UNTIL 400 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 ALONG AND 50 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 40 MILES NORTH NORTHWEST OF
COLUMBIA MISSOURI TO 90 MILES EAST OF MARSEILLES 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
TORNADO WATCH NUMBER 188...SEVERE THUNDERSTORM WATCH NUMBER 189.
WATCH NUMBER 188 189 WILL NOT BE IN EFFECT AFTER 1055 PM CDT.
CONTINUE...WW 190...WW 191...WW 192...


DISCUSSION...EARLIER SUPERCELLS IN NW IL HAVE EVOLVED INTO A BOW
ECHO ACROSS NRN IL.  EXPECT THE BOW ECHO TO PERSIST FOR A FEW MORE
HOURS WHILE MOVING EWD ACROSS NE IL/NW INDIANA WITH THE THREAT OF
DAMAGING WINDS.  FARTHER W...SCATTERED SEVERE STORMS SHOULD PERSIST
ALONG THE COLD FRONT AND OUTFLOW BOUNDARIES FROM PREVIOUS CONVECTION
FROM NE MO INTO WRN/CENTRAL IL.  LARGE HAIL AND DAMAGING GUSTS WILL
BE POSSIBLE WITH THE MORE INTENSE STORMS.

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 27035.


...THOMPSON

;400,0923 420,0865 403,0865 383,0923; 
WWWW