With daytime heating, showers and thunderstorms developed and raced east across eastern Iowa and northern Illinois during the late afternoon and evening of June 21.  Some were severe producing large hail and damaging winds.  In addition, torrential rains lead to some flash flooding and some funnel clouds were also spotted.

Hail in HANCOCK, ILLINOIS
From 21-JUN-10 11:33:00 to 21-JUN-10 11:33:00 (CST-6)
Location: PLYMOUTH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in HANCOCK, ILLINOIS
From 21-JUN-10 17:38:00 to 21-JUN-10 17:38:00 (CST-6)
Location: WEBSTER
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 to 80 mph flattened some 3 to 4 foot high corn 4 miles east of Burnside, IL at 638 pm June 21. In addition, a vehicle was almost overturned.

Thunderstorm Wind in HANCOCK, ILLINOIS
From 21-JUN-10 17:01:00 to 21-JUN-10 17:01:00 (CST-6)
Location: DURHAM
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 60 mph were observed 3 miles southeast of Dallas City, IL at 601 pm June 21.  Some debris was blowing in the wind and rain with possible rotation.

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 21-JUN-10 18:05:00 to 21-JUN-10 18:05:00 (CST-6)
Location: COLCHESTER
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 70 mph blew a large tree down onto a house in Colchester, IL around 705 pm June 21.

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 21-JUN-10 18:25:00 to 21-JUN-10 18:25:00 (CST-6)
Location: ARGYLE LAKE SP
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 60 mph blew down some tree limbs about 4 miles south southwest of Macomb, IL at 725 pm June 21.

Flash Flood in MCDONOUGH, ILLINOIS
From 21-JUN-10 18:50:00 to 22-JUN-10 01:00:00 (CST-6)
Location: GOOD HOPE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains resulted flash flooding in Colchester, IL and Good Hope, IL during the evening of June 21 and early morning of June 22.  Some streets were closed in Colchester due to flooding.  In addition, Highway 67 in Good Hope was flooded.

Hail in STEPHENSON, ILLINOIS
From 21-JUN-10 18:56:00 to 21-JUN-10 18:56:00 (CST-6)
Location: FREEPORT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half dollar-sized hail fell in Freeport, IL at 756 pm June 21.

Hail in MCDONOUGH, ILLINOIS
From 21-JUN-10 21:25:00 to 21-JUN-10 21:25:00 (CST-6)
Location: BLANDINSVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 21-JUN-10 21:32:00 to 21-JUN-10 21:32:00 (CST-6)
Location: GOOD HOPE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 50 to 60 mph were observed in Good Hope, IL at 1032 pm June 21.

Flash Flood in HANCOCK, ILLINOIS
From 22-JUN-10 01:00:00 to 22-JUN-10 06:00:00 (CST-6)
Location: AUGUSTA
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rains overnight resulted several reports of building flooding in downtown Augusta, including the post office.  An estimated 2 feet of water flooded the post office basement.

Tornado in MCDONOUGH, ILLINOIS
From 21-JUN-10 18:30:00 to 21-JUN-10 18:31:00 (CST-6)
Location: INDUSTRY
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tornado briefly touched down northeast of Industry, IL around 730 pm CDT June 21.  A spotter observed this touchdown as it took the roof off a barn.