A strong cold front plowed eastward through eastern Iowa and northern Illinois during the late afternoon and evening hours of June 27 triggering a line of severe thunderstorms. Several areas not only received torrential downpours of rain...but also saw wind gusts in excess of 60 mph which caused numerous reports of tree damage and downed some utility poles and power lines. One of the stronger storms hit just southeast of Walnut Grove, IL destroying a barn and a grain bin. In addition, hail 1.25 inches in diameter fell just north of Burlington, IA.  Prior to all the wild  weather, hazy, hot, and humid conditions prevailed across the region, with high temperatures ranging from the upper 80s north to upper 90s south.

Thunderstorm Wind in MUSCATINE, IOWA
From 27-JUN-09 16:02:00 to 27-JUN-09 16:02:00 (CST-6)
Location: WILTON
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 blew down some branches on the northwest side of Wilton, IA around 502 pm June 27.

Thunderstorm Wind in JACKSON, IOWA
From 27-JUN-09 16:22:00 to 27-JUN-09 16:22:00 (CST-6)
Location: SABULA
Magnitude: 52.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 60 mph blew a pontoon boat onto a car in Sabula, IA around 522 pm June 27.

Thunderstorm Wind in CLINTON, IOWA
From 27-JUN-09 16:40:00 to 27-JUN-09 16:40:00 (CST-6)
Location: CLINTON
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Wind gusts estimated to be 70 mph blew down power lines in Clinton, IA around 540 pm June 27.

Thunderstorm Wind in WASHINGTON, IOWA
From 27-JUN-09 15:18:00 to 27-JUN-09 15:18:00 (CST-6)
Location: WASHINGTON ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in JACKSON, IOWA
From 27-JUN-09 15:30:00 to 27-JUN-09 15:30:00 (CST-6)
Location: EMELINE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts were estimated to be 60 mph about 1 mile west of Emeline, IA around 430 pm June 27.

Thunderstorm Wind in WASHINGTON, IOWA
From 27-JUN-09 15:40:00 to 27-JUN-09 15:40:00 (CST-6)
Location: AINSWORTH
Magnitude: 52.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated to be 60 mph blew over a parked semi truck near the junction of Highway 218 and Highway 92 near Ainsworth, IA around 440 pm June 27.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:45:00 to 27-JUN-09 16:45:00 (CST-6)
Location: LE CLAIRE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wind gusts estimated to be 70 mph blew down some trees in Le Claire, IA around 545 pm June 27.

Thunderstorm Wind in LEE, IOWA
From 27-JUN-09 17:20:00 to 27-JUN-09 17:20:00 (CST-6)
Location: FT MADISON
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 trees in Fort Madison, IA around 620 pm June 27. A power outage was also observed.

Hail in DES MOINES, IOWA
From 27-JUN-09 18:06:00 to 27-JUN-09 18:06:00 (CST-6)
Location: LENOX PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail fell about 3 miles north of Burlington, IA around 706 pm June 27.

Hail in DES MOINES, IOWA
From 27-JUN-09 18:10:00 to 27-JUN-09 18:10:00 (CST-6)
Location: LENOX PARK
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Half dollar-sized hail fell about 3 miles north of Burlington, IA around 710 pm June 27.

Thunderstorm Wind in CLINTON, IOWA
From 27-JUN-09 16:40:00 to 27-JUN-09 16:40:00 (CST-6)
Location: CLINTON
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 mph blew down some trees and power lines along the 3500 block of Main Avenue (Highway 136) on the north side of Clinton, IA around 540 pm June 27.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:30:00 to 27-JUN-09 16:30:00 (CST-6)
Location: DAVENPORT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 mph snapped a 1 foot diameter tree in half at 8th St and Warren St in Davenport, IA around 530 pm June 27.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:30:00 to 27-JUN-09 16:30:00 (CST-6)
Location: DAVENPORT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 60 mph in Davenport, IA around 530 pm June 27.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:30:00 to 27-JUN-09 16:30:00 (CST-6)
Location: DAVENPORT
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Employee

Wind gusts estimated to be 70 mph blew down several trees and tree branches in downtown Davenport, IA around 530 pm June 27.  A large tree fell onto McKay Music near the intersection of Brady Street and 13th Street.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:37:00 to 27-JUN-09 16:37:00 (CST-6)
Location: PANORAMA PARK
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wind gusts estimated to be 70 mph blew a tree down in Riverdale, IA around 537 pm June 27.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:40:00 to 27-JUN-09 16:40:00 (CST-6)
Location: PRINCETON
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Wind gusts estimated to be 70 mph blew down some power lines about 1 mile west of Princeton, IA around 540 pm June 27.

Thunderstorm Wind in SCOTT, IOWA
From 27-JUN-09 16:40:00 to 27-JUN-09 16:40:00 (CST-6)
Location: BETTENDORF
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A 60 mph wind gust was measured by the IDOT RWIS site RQCI4 on the Interstate 74 bridge going over the Mississippi River at 540 pm June 27.

Thunderstorm Wind in MUSCATINE, IOWA
From 27-JUN-09 16:01:00 to 27-JUN-09 16:01:00 (CST-6)
Location: MUSCATINE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated to be 60 mph about 1 mile north of Muscatine, IA around 501 pm June 27.