[LeArc] Weather Watch : 2@ 7/5/2003 3:39:06 AM

[learc@mailman.qth.net]

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


WWUS20 KWNS 050838
SEL2  
SPC WW 050840
ILZ000-INZ000-WIZ000-LMZ000-051300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 642 
NWS STORM PREDICTION CENTER NORMAN OK 
340 AM CDT SAT JUL 5 2003

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

       NORTHEAST ILLINOIS
       EXTREME NORTHWEST INDIANA
       SOUTHEAST WISCONSIN
       LAKE MICHIGAN

EFFECTIVE THIS SATURDAY MORNING FROM 340 AM UNTIL 800 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF MILWAUKEE
WISCONSIN TO 20 MILES SOUTH SOUTHEAST 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...CONTINUE...WW 641...


DISCUSSION...BOW ECHO OVER EXTREME NORTHWEST IL IS EXPECTED TO TRACK
EASTWARD AT 40 KNOTS...APPROACHING CHICAGO/MILWAUKEE AREAS AFTER
10Z.  ALTHOUGH IR/RADAR TRENDS SUGGEST SOME WEAKENING...STRONG
MESOSCALE ORGANIZATION OF SYSTEM AND FAVORABLE INSTABILITY/SHEAR
SUGGEST A CONTINUED THREAT OF DAMAGING WINDS AND HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27040.


...HART

;432,0862 410,0872 410,0894 432,0884; 
WWWW