An unstable air mass remained over the region triggering showers and thunderstorms.  Some of the storms produced severe weather.

Thunderstorm Wind in BOND, ILLINOIS
From 11-JUL-08 17:05:00 to 11-JUL-08 17:05:00 (CST-6)
Location: POCAHONTAS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several power lines were blown down in Pocahontas.

Hail in ST. CLAIR, ILLINOIS
From 11-JUL-08 16:24:00 to 11-JUL-08 16:26:00 (CST-6)
Location: LEBANON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLINTON, ILLINOIS
From 11-JUL-08 16:38:00 to 11-JUL-08 16:38:00 (CST-6)
Location: TRENTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ADAMS, ILLINOIS
From 11-JUL-08 16:05:00 to 11-JUL-08 16:05:00 (CST-6)
Location: LIBERTY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ADAMS, ILLINOIS
From 11-JUL-08 16:40:00 to 11-JUL-08 16:40:00 (CST-6)
Location: GOLDEN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOND, ILLINOIS
From 11-JUL-08 17:25:00 to 11-JUL-08 17:25:00 (CST-6)
Location: GREENVILLE ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MONTGOMERY, ILLINOIS
From 11-JUL-08 16:50:00 to 11-JUL-08 16:50:00 (CST-6)
Location: LITCHFIELD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in MADISON, ILLINOIS
From 11-JUL-08 16:50:00 to 11-JUL-08 16:50:00 (CST-6)
Location: HIGHLAND
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds blew over a machine shed about 2 miles south of Highland on Illinois Route 160.  Some equipment that had been inside the shed were damaged.  Also, another building on the same farm had about a third of its western wall blown out and a 14 foot sliding door on the shed was blown 500 feet off its rollers and over the top of another building.  Several power lines and numerous tree limbs were blown down in the area.

Thunderstorm Wind in ADAMS, ILLINOIS
From 11-JUL-08 16:05:00 to 11-JUL-08 16:10:00 (CST-6)
Location: LIBERTY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A bus barn for the Liberty High School had its roof blown off.  Three buses had minor damage and the metal roof sections were blown across the running track and a nearby road.  Also, a power pole was snapped in half.

Thunderstorm Wind in MADISON, ILLINOIS
From 11-JUL-08 17:00:00 to 11-JUL-08 17:00:00 (CST-6)
Location: WORDEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds blew down several large tree limbs in Worden.  One tree limb landed on an unoccupied truck causing minor damage.

Hail in CALHOUN, ILLINOIS
From 11-JUL-08 14:40:00 to 11-JUL-08 14:40:00 (CST-6)
Location: KAMPSVILLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm Wind in ST. CLAIR, ILLINOIS
From 11-JUL-08 16:10:00 to 11-JUL-08 16:10:00 (CST-6)
Location: (BLV)SCOTT AFB BELLE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Several trees were blown down along Interstate 64, just north of Scott Airforce Base.