Strong to severe thunderstorms developed across parts of northern Illinois during the afternoon hours of June 1st.

Hail in KANE, ILLINOIS
From 01-JUN-09 13:25:00 to 01-JUN-09 13:26:00 (CST-6)
Location: AURORA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in BOONE, ILLINOIS
From 01-JUN-09 16:30:00 to 01-JUN-09 20:00:00 (CST-6)
Location: BELVIDERE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Four to six inches of standing water was reported in the streets at multiple locations.

Flood in WINNEBAGO, ILLINOIS
From 01-JUN-09 16:17:00 to 01-JUN-09 20:00:00 (CST-6)
Location: PERRYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Four to five inches of standing water was reported along Business 20 in Perryville.

Thunderstorm Wind in DE KALB, ILLINOIS
From 01-JUN-09 02:05:00 to 01-JUN-09 02:05:00 (CST-6)
Location: CORTLAND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A large tree was blown over along North Chase Road.

Thunderstorm Wind in IROQUOIS, ILLINOIS
From 01-JUN-09 19:00:00 to 01-JUN-09 19:00:00 (CST-6)
Location: IDAVILLE CORNER
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A barn suffered significant wind damage with a large section of roof blown away, including part of the roof structure.

Hail in DU PAGE, ILLINOIS
From 01-JUN-09 13:45:00 to 01-JUN-09 13:46:00 (CST-6)
Location: WOODRIDGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DU PAGE, ILLINOIS
From 01-JUN-09 13:30:00 to 01-JUN-09 13:31:00 (CST-6)
Location: NAPERVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KANE, ILLINOIS
From 01-JUN-09 16:15:00 to 01-JUN-09 16:16:00 (CST-6)
Location: HENPECK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Penny size hail was reported near Route 47 and Interstate 90.

Hail in MCHENRY, ILLINOIS
From 01-JUN-09 17:08:00 to 01-JUN-09 17:09:00 (CST-6)
Location: HUNTLEY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in COOK, ILLINOIS
From 01-JUN-09 17:24:00 to 01-JUN-09 17:25:00 (CST-6)
Location: HOFFMAN ESTATES
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was reported at Route 62 and Huntington Boulevard.

Hail in LIVINGSTON, ILLINOIS
From 01-JUN-09 17:35:00 to 01-JUN-09 17:36:00 (CST-6)
Location: STRAWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LIVINGSTON, ILLINOIS
From 01-JUN-09 17:35:00 to 01-JUN-09 17:35:00 (CST-6)
Location: STRAWN
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in FORD, ILLINOIS
From 01-JUN-09 18:36:00 to 01-JUN-09 18:36:00 (CST-6)
Location: PAXTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree was blown down on Route 9 blocking both lanes.

Flash Flood in WINNEBAGO, ILLINOIS
From 01-JUN-09 17:40:00 to 01-JUN-09 22:00:00 (CST-6)
Location: PECATONICA ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Six to eight inches of flowing water was reported over Telegraph Road near Theodorff Road.