Thunderstorms developed during the middle and late afternoon hours of May 30th across east central Illinois and continued into the evening hours.  These thunderstorms produced large hail, heavy rain and flooding along with some wind damage.

Hail in GRUNDY, ILLINOIS
From 30-MAY-08 17:49:00 to 30-MAY-08 17:52:00 (CST-6)
Location: GORMAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf ball size hail was reported near Reed and Jugtown Roads.

Hail in WILL, ILLINOIS
From 30-MAY-08 17:50:00 to 30-MAY-08 17:52:00 (CST-6)
Location: BRAIDWOOD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in GRUNDY, ILLINOIS
From 30-MAY-08 18:00:00 to 30-MAY-08 18:02:00 (CST-6)
Location: COAL CITY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in IROQUOIS, ILLINOIS
From 30-MAY-08 16:40:00 to 30-MAY-08 16:40:00 (CST-6)
Location: GOODWINE
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were blown down with one on a trailer.

Thunderstorm Wind in WILL, ILLINOIS
From 30-MAY-08 17:55:00 to 30-MAY-08 17:55:00 (CST-6)
Location: BRAIDWOOD
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tractor trailer was blown over on Interstate 55 near mile marker 232.

Thunderstorm Wind in GRUNDY, ILLINOIS
From 30-MAY-08 17:45:00 to 30-MAY-08 17:45:00 (CST-6)
Location: MAZON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six to eight inch diameter tree limbs were blown down on Center Street.  Large tree limbs and some large trees were also blown down.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 30-MAY-08 18:47:00 to 30-MAY-08 18:47:00 (CST-6)
Location: PUDER
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs and power lines were blown down near Route 1 and 10500 N.

Thunderstorm Wind in KANKAKEE, ILLINOIS
From 30-MAY-08 18:53:00 to 30-MAY-08 18:53:00 (CST-6)
Location: GRANT PARK
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Utility poles were blown down.

Thunderstorm Wind in IROQUOIS, ILLINOIS
From 30-MAY-08 15:01:00 to 30-MAY-08 15:01:00 (CST-6)
Location: ONARGA
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wind gust to 60 mph was measured on Interstate 57 about 5 miles southwest of Gilman.

Thunderstorm Wind in FORD, ILLINOIS
From 30-MAY-08 15:13:00 to 30-MAY-08 15:13:00 (CST-6)
Location: PAXTON ARPT
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A semi truck was blown over in the median on Interstate 57, just southwest of Paxton.

Flood in IROQUOIS, ILLINOIS
From 30-MAY-08 21:00:00 to 31-MAY-08 23:59:00 (CST-6)
Location: BRYCE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

After heavy rain and flash flooding during the evening of May 30th, flooding continued for much of May 31st.  A viaduct along Route 1 in Milford remained full and impassible.

Flood in IROQUOIS, ILLINOIS
From 31-MAY-08 15:15:00 to 31-MAY-08 23:59:00 (CST-6)
Location: DEL REY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Route 45 at 1200N was closed due to flooding.

Flood in IROQUOIS, ILLINOIS
From 31-MAY-08 15:15:00 to 31-MAY-08 23:59:00 (CST-6)
Location: SHELDON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Road 3100E between 1300N and 1400N was closed and Road 3200E between 1500N and 1400N was also closed, both due to flooding.

Hail in GRUNDY, ILLINOIS
From 30-MAY-08 17:42:00 to 30-MAY-08 17:46:00 (CST-6)
Location: MAZON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny to quarter size hail was reported in Mazon.

Thunderstorm Wind in IROQUOIS, ILLINOIS
From 30-MAY-08 15:10:00 to 30-MAY-08 15:10:00 (CST-6)
Location: CISSNA PARK
Magnitude: 55.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Newspaper

Multiple large trees, tree limbs and power lines were blown down throughout Cissna Park but no major damage was reported.

Hail in KANKAKEE, ILLINOIS
From 30-MAY-08 18:12:00 to 30-MAY-08 18:17:00 (CST-6)
Location: MANTENO
Magnitude: 2.50 
Property damage: 2.00M
Crop damage: 0.00K
Reported by: Trained Spotter

Hail to the size of tennis balls was reported covering the ground near Main Street and Route 50.  School roofs were damaged including heating and cooling units.  Two school greenhouses were also damaged.  Windows were also broken on some houses and businesses.

Flash Flood in IROQUOIS, ILLINOIS
From 30-MAY-08 17:03:00 to 30-MAY-08 21:00:00 (CST-6)
Location: BRYCE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Roads were reported flooded in Milford during the evening.  By 740 pm, several roads were closed due to flooding with 3 to 4 inches of flowing water.  Part of the roadway was washed away just west of Chapel Bridge with holes up to 6 feet deep.  Six inches of rainfall was measured four miles west of Milford in just 2 hours.  Route 1 viaduct at Milford was closed due to flooding.