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 LEE, IOWA
From 21-JUN-10 16:17:00 to 21-JUN-10 16:17:00 (CST-6)
Location: DENMARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell 10 miles north of Fort Madison, IA at 517 pm June 21.

Hail in LEE, IOWA
From 21-JUN-10 16:45:00 to 21-JUN-10 16:45:00 (CST-6)
Location: SAWYER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half dollar-sized hail fell 6 miles north of Fort Madison, IA near Wever, IA at 545 pm June 21.

Hail in LEE, IOWA
From 21-JUN-10 16:47:00 to 21-JUN-10 16:47:00 (CST-6)
Location: WEVER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in LEE, IOWA
From 21-JUN-10 16:48:00 to 21-JUN-10 19:00:00 (CST-6)
Location: DONNELLSON
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy rains resulted in flash flooding in Donnellson, IA and Fort Madison, IA during the evening of June 21. Water was over several roads in Donnellson.  In Fort Madison, the flood waters were 1 to 1.5 feet deep on some main streets in the downtown area.  Some streets were impassible. Water flowed into some buildings in the downtown area.  A trained spotted also contributed to this report.

Thunderstorm Wind in SCOTT, IOWA
From 21-JUN-10 18:45:00 to 21-JUN-10 18:45:00 (CST-6)
Location: SCOTT COUNTY PARK
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 2 miles east of Long Grove, IA or in Park View, IA at 745 pm June 21.

Hail in DES MOINES, IOWA
From 21-JUN-10 20:51:00 to 21-JUN-10 20:51:00 (CST-6)
Location: BURLINGTON ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell 1 mile east of the Burlington Regional Airport in Burlington, IA at 951 pm June 21.

Hail in VAN BUREN, IOWA
From 21-JUN-10 21:00:00 to 21-JUN-10 21:00:00 (CST-6)
Location: LEANDO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell in the Douds/Leando, IA area at 1000 pm June 21.

Funnel Cloud in VAN BUREN, IOWA
From 21-JUN-10 15:25:00 to 21-JUN-10 15:25:00 (CST-6)
Location: BONAPARTE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A funnel cloud was reported north of Bonaparte.  Newspaper photographs also showed a large wall cloud, and witnesses described obvious rotation.

Funnel Cloud in LEE, IOWA
From 21-JUN-10 16:21:00 to 21-JUN-10 16:21:00 (CST-6)
Location: FT MADISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A spotter reported a funnel cloud north of Fort Madison.

Tornado in VAN BUREN, IOWA
From 21-JUN-10 15:25:00 to 21-JUN-10 15:26:00 (CST-6)
Location: BENTONSPORT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A reserve officer observed a brief tornado touchdown north of Bonaparte, IA around 425 pm CDT June 21.

Funnel Cloud in LEE, IOWA
From 21-JUN-10 16:17:00 to 21-JUN-10 16:17:00 (CST-6)
Location: FT MADISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in LEE, IOWA
From 21-JUN-10 16:21:00 to 21-JUN-10 16:22:00 (CST-6)
Location: FT MADISON MUNI ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter observed a brief tornado touchdown about 5 miles north of Fort Madison, IA around 521 pm CDT June 21.

Funnel Cloud in LEE, IOWA
From 21-JUN-10 16:28:00 to 21-JUN-10 16:28:00 (CST-6)
Location: FT MADISON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A funnel cloud was observed over Highway 61 near Fort Madison, IA around 528 pm CDT June 21.

Thunderstorm Wind in LEE, IOWA
From 21-JUN-10 16:51:00 to 21-JUN-10 16:51:00 (CST-6)
Location: FT MADISON
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 1 mile east northeast of Fort Madison, IA at 551 pm June 21.

Thunderstorm Wind in LEE, IOWA
From 21-JUN-10 17:14:00 to 21-JUN-10 17:14:00 (CST-6)
Location: FT MADISON
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 numerous large tree limbs in Fort Madison, IA at 614 pm CDT June 21.  The local newspaper later included pictures of branches over a foot in diameter that were downed by the storm.

Hail in CLINTON, IOWA
From 21-JUN-10 17:58:00 to 21-JUN-10 17:58:00 (CST-6)
Location: CALAMUS EASTVOLD ARP
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf ball-sized hail fell 2 miles northeast of Calamus, IA at 658 pm June 21.

Hail in VAN BUREN, IOWA
From 21-JUN-10 18:16:00 to 21-JUN-10 18:16:00 (CST-6)
Location: KILBOURN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf ball-sized hail fell 5 miles northwest of Keosauqua, IA at 716 pm June 21.

Hail in VAN BUREN, IOWA
From 21-JUN-10 18:20:00 to 21-JUN-10 18:20:00 (CST-6)
Location: PITTSBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell 1 mile north of Keosauqua, IA at 720 pm June 21.

Hail in VAN BUREN, IOWA
From 21-JUN-10 18:22:00 to 21-JUN-10 18:22:00 (CST-6)
Location: PITTSBURG
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Half dollar-sized hail fell 1 mile north of Keosauqua, IA at 722 pm June 21.

Hail in LEE, IOWA
From 21-JUN-10 16:11:00 to 21-JUN-10 16:11:00 (CST-6)
Location: DENMARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell in Denmark, IA at 511 pm June 21.