[LeArc] Weather Watch : 9@ 4/30/2003 5:49:07 PM

[learc@mailman.qth.net]

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


WWUS20 KWNS 302248
SEL9  
SPC WW 302250
ILZ000-INZ000-MIZ000-LMZ000-010400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 189 
NWS STORM PREDICTION CENTER NORMAN OK 
550 PM CDT WED APR 30 2003

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

       NORTHERN ILLINOIS
       NORTHERN INDIANA
       EXTREME SOUTHWEST LOWER MICHIGAN
       LAKE MICHIGAN

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 550 PM UNTIL
1100 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 45 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 60 MILES NORTHWEST OF PEORIA
ILLINOIS TO 35 MILES NORTH NORTHEAST OF FORT WAYNE INDIANA.

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 187. WATCH NUMBER 187 WILL NOT BE
IN EFFECT AFTER 550 PM CDT. CONTINUE...WW 188...


DISCUSSION...STRONG/SEVERE STORMS WILL CONTINUE FOR THE NEXT SEVERAL
HOURS ALONG AN E-W FRONT ACROSS NRN IL/INDIANA.  A FEED OF MODERATE
INSTABILITY FROM THE S/SW AND MODEST LOW-LEVEL/DEEP LAYER SHEAR
ALONG THE BOUNDARY WILL MAINTAIN THE THREAT FOR SUPERCELLS WITH
LARGE HAIL AND DAMAGING WINDS.	THE SUPERCELLS IN SE IA WILL BE
MONITORED CLOSELY AS THEY APPROACH WRN IL...THOUGH THE PRIMARY
TORNADO THREAT SHOULD REMAIN TO THE W IN TORNADO WATCH 188.

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 26025.


...THOMPSON

;415,0903 420,0845 404,0845 403,0903; WWWW