A warm front stretching from southwest Kansas to northern Ohio pushed humid air into eastern Iowa, northeast Missouri, and northwest Illinois during the early morning hours of May 29. Widespread dense fog developed from eastern Iowa to central Wisconsin with visibilities less than a quarter of a mile in many locations. By mid morning, showers
and thunderstorms developed as the warm front lifted into the region. Heavy rains of over an inch fell at Parnell, Keosauqua, Annawan, Morrison, Erie and the Davenport Municipal Airport. In addition to the heavy rain, some storms produced large hail and damaging winds.

Thunderstorm Wind in JEFFERSON, IOWA
From 29-MAY-11 08:17:00 to 29-MAY-11 08:17:00 (CST-6)
Location: PERLEE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 mph blew down some 3 to 4 inch diameter branches 5 miles northeast of Fairfield, IA at 917 am CDT May 29.

Thunderstorm Wind in JOHNSON, IOWA
From 29-MAY-11 08:30:00 to 29-MAY-11 08:30:00 (CST-6)
Location: SWISHER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Wind gusts estimated to be 60 mph blew down some 6 to 7 inch diameter branches in Swisher, IA at 930 am CDT May 29.

Thunderstorm Wind in JOHNSON, IOWA
From 29-MAY-11 08:32:00 to 29-MAY-11 08:32:00 (CST-6)
Location: SWISHER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Wind gusts estimated to be 60 mph blew down some tree limbs in Swisher, IA at 932 am CDT May 29.  The fallen limbs blocked some roads.

Thunderstorm Wind in LINN, IOWA
From 29-MAY-11 08:39:00 to 29-MAY-11 08:39:00 (CST-6)
Location: CEDAR RAPIDS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 60 mph wind gust was measured 5 miles north northeast of Cedar Rapids, IA at 939 am CDT May 29.

Thunderstorm Wind in WASHINGTON, IOWA
From 29-MAY-11 08:48:00 to 29-MAY-11 08:48:00 (CST-6)
Location: WELLMAN
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 60 mph blew down some tree limbs and power lines in Wellman, IA at 948 am CDT May 29.

Thunderstorm Wind in CLINTON, IOWA
From 29-MAY-11 09:28:00 to 29-MAY-11 09:28:00 (CST-6)
Location: WHEATLAND
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated to be 70 mph blew down an 18 inch diameter tree in Wheatland, IA at 1028 am CDT May 29.

Thunderstorm Wind in CLINTON, IOWA
From 29-MAY-11 09:28:00 to 29-MAY-11 09:28:00 (CST-6)
Location: WHEATLAND
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 mph were observed in Wheatland, IA at 1028 am CDT May 29.

Thunderstorm Wind in SCOTT, IOWA
From 29-MAY-11 09:43:00 to 29-MAY-11 09:43:00 (CST-6)
Location: SCOTT COUNTY PARK
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 65 mph wind gust was measured in Park View, IA at 1043 am CDT May 29.

Thunderstorm Wind in CLINTON, IOWA
From 29-MAY-11 10:10:00 to 29-MAY-11 10:10:00 (CST-6)
Location: CLINTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated to be 60 mph blew down several branches in Clinton, IA at 1110 am CDT May 29.

Thunderstorm Wind in JOHNSON, IOWA
From 29-MAY-11 08:40:00 to 29-MAY-11 08:40:00 (CST-6)
Location: LAKE MACBRIDE SP
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 75 mph blew down numerous trees at Lake McBride State Park about 4 miles west southwest of Solon, IA at 940 am CDT May 29.  One tree fell onto a tent, killing a camper.

Hail in KEOKUK, IOWA
From 29-MAY-11 07:55:00 to 29-MAY-11 07:55:00 (CST-6)
Location: HEDRICK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Quarter sized hail fell in Hedrick, IA at 855 am CDT May 29.

Thunderstorm Wind in JEFFERSON, IOWA
From 29-MAY-11 08:17:00 to 29-MAY-11 08:17:00 (CST-6)
Location: PERLEE
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 70 mph wind gust was measured 5 miles northeast of Fairfield, IA at 917 am CDT May 29.

Thunderstorm Wind in WASHINGTON, IOWA
From 29-MAY-11 08:30:00 to 29-MAY-11 08:30:00 (CST-6)
Location: WEST CHESTER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 60 mph were observed 6 miles west southwest of Washington, IA at 930 am CDT May 29.