A nearly stationary front, combined with abundant moisture and a strong upper level storm system to produce scattered strong to severe thunderstorms Wednesday evening.  A few reports of hail to near golfball size and wind gusts of around 60 mph were received.  Damage was confined mainly to trees and power lines.  The thunderstorms continued through the late evening and into Thursday morning.  During this time the threat shifted from hail and high wind to very heavy rain and flash flooding, as the thunderstorms continuously developed over some of the same areas.  Rainfall amounts of up to 3 to 5 inches were reported in portions of West Central Illinois, an area which just 48 hours earlier received anywhere from 2 to 5 inches of rain.  As a result, much of the heavy rain went into runoff resulting in fairly widespread flash flooding.

Flash Flood in HENDERSON, ILLINOIS
From 12-JUN-02 22:25:00 to 13-JUN-02 01:00:00 (CST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Portions of Highway 34 and sections of Route 116 between Media and Stronghurst under water.  Numerous county roads at least 6 inches under water.

Flash Flood in HANCOCK, ILLINOIS
From 13-JUN-02 05:05:00 to 13-JUN-02 08:00:00 (CST)
Location: CARTHAGE
Reported by: LAW ENFORCEMENT

Flood water debris blocking many county roads.

Flash Flood in MCDONOUGH, ILLINOIS
From 13-JUN-02 05:10:00 to 13-JUN-02 08:00:00 (CST)
Location: PRAIRIE CITY
Reported by: LAW ENFORCEMENT

Route 41 closed due to high water.

Flash Flood in HANCOCK, ILLINOIS
From 13-JUN-02 05:05:00 to 13-JUN-02 08:00:00 (CST)
Location: NAUVOO
Reported by: LAW ENFORCEMENT

Portions of a blacktop road between Nauvoo and Hamilton covered with 6 inches of water.

Hail in MERCER, ILLINOIS
From 12-JUN-02 20:06:00 to 12-JUN-02 20:06:00 (CST)
Location: ALEDO
Magnitude: 1.00 
Reported by: LAW ENFORCEMENT

Flash Flood in MCDONOUGH, ILLINOIS
From 13-JUN-02 05:10:00 to 13-JUN-02 08:00:00 (CST)
Location: GOOD HOPE
Reported by: LAW ENFORCEMENT

Water covered Route 9 making it impassable in spots.

Flash Flood in HANCOCK, ILLINOIS
From 13-JUN-02 05:50:00 to 13-JUN-02 08:00:00 (CST)
Location: LA HARPE
Reported by: TRAINED SPOTTER

Several roads in and around town closed due to flood waters.

Hail in HENDERSON, ILLINOIS
From 12-JUN-02 19:16:00 to 12-JUN-02 19:16:00 (CST)
Location: OQUAWKA
Magnitude: 0.75 
Reported by: EMERGENCY MANAGER

Hail in MERCER, ILLINOIS
From 12-JUN-02 19:35:00 to 12-JUN-02 19:35:00 (CST)
Location: NORTH HENDERSON
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Hail in MERCER, ILLINOIS
From 12-JUN-02 18:55:00 to 12-JUN-02 18:55:00 (CST)
Location: MATHERVILLE
Magnitude: 2.00 
Reported by: LAW ENFORCEMENT

Flash Flood in WARREN, ILLINOIS
From 13-JUN-02 04:30:00 to 13-JUN-02 07:00:00 (CST)
Location: ALEXIS
Reported by: LAW ENFORCEMENT

Several city roads closed due to high water.

Flash Flood in HENDERSON, ILLINOIS
From 13-JUN-02 04:50:00 to 13-JUN-02 07:30:00 (CST)
Location: COUNTYWIDE
Reported by: LAW ENFORCEMENT

Numerous county roads closed due to flood waters.  Also, 4 feet of water reported around a home in Stronghurst.

Flash Flood in WARREN, ILLINOIS
From 13-JUN-02 05:00:00 to 13-JUN-02 07:30:00 (CST)
Location: MONMOUTH
Reported by: LAW ENFORCEMENT

Highway 164 covered with water 6 to 12 inches deep.

Flash Flood in WARREN, ILLINOIS
From 13-JUN-02 01:00:00 to 13-JUN-02 03:30:00 (CST)
Location: MONMOUTH
Reported by: LAW ENFORCEMENT

Highway 67 closed due to high water.

Flash Flood in WARREN, ILLINOIS
From 12-JUN-02 22:45:00 to 13-JUN-02 02:00:00 (CST)
Location: SMITHSHIRE
Reported by: TRAINED SPOTTER

Residence surrounded by high water.  Smithshire blacktop county road under water.