A line of thunderstorms blasted across parts of eastern Iowa and northwest Illinois during the early morning hours of June 23. With temperatures hovering
near 80, the storms had plenty of instability to work with and as a result produced isolated wind damage from Jesup, Iowa to near Morrison, Illinois. Once the rain moved in, many areas along and north of I-80 cooled off into the lower 70s. Heavy rainfall was also common with the thunderstorms, with rainfall totals of 1 to 3.5 inches which caused some flash flooding concerns.

Thunderstorm Wind in CLINTON, IOWA
From 23-JUN-10 04:12:00 to 23-JUN-10 04:12:00 (CST-6)
Location: LOW MOOR
Magnitude: 61.00 EG
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Newspaper

A large grain bin and elevator were lifted slightly by severe thunderstorm winds, and then collapsed when they dropped back to the ground.

Thunderstorm Wind in DUBUQUE, IOWA
From 23-JUN-10 03:00:00 to 23-JUN-10 03:00:00 (CST-6)
Location: CASCADE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A large tree in Calvary Cemetery was blown down.

Thunderstorm Wind in BUCHANAN, IOWA
From 23-JUN-10 01:45:00 to 23-JUN-10 01:45:00 (CST-6)
Location: JESUP
Magnitude: 61.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 70 mph snapped or uprooted several large trees in Jesup, IA at 245 am CDT June 23.  The local fire department assessed a swath of damage about 2 miles long and 200 feet wide.  Some of the trees landed on outbuildings, fences, and houses. In addition, some buildings in an industrial park were damaged and some houses lost shingles.

Thunderstorm Wind in BUCHANAN, IOWA
From 23-JUN-10 01:45:00 to 23-JUN-10 01:45:00 (CST-6)
Location: FAIRBANK
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 70 mph blew down several trees in Fairbank, IA around 245 am June 23.  One tree fell onto a house.

Thunderstorm Wind in DUBUQUE, IOWA
From 23-JUN-10 03:00:00 to 23-JUN-10 03:00:00 (CST-6)
Location: CENTER GROVE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 65 mph were observed in Dubuque, IA around 400 am June 23.

Thunderstorm Wind in DUBUQUE, IOWA
From 23-JUN-10 03:03:00 to 23-JUN-10 03:03:00 (CST-6)
Location: ASBURY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 60 to 70 mph were observed 6 miles west of Dubuque, IA around 403 am June 23.

Thunderstorm Wind in DUBUQUE, IOWA
From 23-JUN-10 03:03:00 to 23-JUN-10 03:03:00 (CST-6)
Location: (DBQ)DUBUQUE MUNI AR
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts measured to be 59 mph were observed by the ASOS at the Dubuque Regional Airport at 403 am June 23.

Thunderstorm Wind in JONES, IOWA
From 23-JUN-10 03:05:00 to 23-JUN-10 03:05:00 (CST-6)
Location: MONTICELLO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 65 mph blew a tree down in Monticello, IA around 405 am June 23.

Thunderstorm Wind in CLINTON, IOWA
From 23-JUN-10 03:50:00 to 23-JUN-10 03:50:00 (CST-6)
Location: DEWITT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 65 mph blew some tree limbs onto power lines in De Witt, IA around 450 am June 23.

Thunderstorm Wind in CLINTON, IOWA
From 23-JUN-10 04:00:00 to 23-JUN-10 04:00:00 (CST-6)
Location: DEWITT
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Employee

Wind gusts estimated to be 70 mph blew several trees and limbs down throughout De Witt, IA around 500 am June 23.  Some streets were blocked by fallen trees.

Thunderstorm Wind in CLINTON, IOWA
From 23-JUN-10 04:10:00 to 23-JUN-10 04:10:00 (CST-6)
Location: CLINTON
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 65 mph blew some tree limbs down onto power lines in Clinton, IA around 510 am June 23.

Thunderstorm Wind in CLINTON, IOWA
From 23-JUN-10 04:00:00 to 23-JUN-10 04:00:00 (CST-6)
Location: DEWITT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 mph snapped two 18 to 24 inch diameter trees 1 mile west southwest of De Witt, IA around 500 am CDT June 23.

Flash Flood in WASHINGTON, IOWA
From 23-JUN-10 05:45:00 to 23-JUN-10 11:00:00 (CST-6)
Location: WELLMAN
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rains resulted in flash flooding in Wellman, IA and Kalona, IA during the morning of June 23.  Streets and basements were flooded.

Flash Flood in IOWA, IOWA
From 23-JUN-10 06:05:00 to 23-JUN-10 12:00:00 (CST-6)
Location: MARENGO
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy rains resulted in flash flooding in Marengo, IA during the morning of June 23.  Streets were full of flood water and sewers were bubbling over.  In addition, major street flooding with water 12 to 14 inches deep was observed about 4 miles north of Marengo.  A trained spotter also contributed to this report.

Flash Flood in CLINTON, IOWA
From 23-JUN-10 06:25:00 to 23-JUN-10 11:00:00 (CST-6)
Location: DEWITT
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rains resulted in flash flooding of several streets in De Witt, IA during the morning of June 23.  The flood waters covered E 11th Street, which prompted its closure.  In addition, Silver Creek was out of its banks.

Flash Flood in MUSCATINE, IOWA
From 23-JUN-10 06:47:00 to 23-JUN-10 11:00:00 (CST-6)
Location: WEST LIBERTY
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains resulted in flash flooding of parts of Highway 6 between West Liberty, IA and Atalissa, IA as well as County Road F58 between Durant, IA and Stockton, IA during the morning of June 23. Portions of these roads were closed due to the flooding.

Flash Flood in SCOTT, IOWA
From 23-JUN-10 06:33:00 to 23-JUN-10 11:00:00 (CST-6)
Location: WALCOTT
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy rains resulted in flash flooding of the Wapsipinicon River about 5 miles south of De Witt, IA in Scott County at the COOP observer's residence.  The flood waters covered the porch of the house.  In the southwest part of Scott County, County Road F58 was partially flooded between Durant, IA and Stockton, IA.  It had to be closed due to the flooding.  Law enforcement also contributed to this report.

Flash Flood in MUSCATINE, IOWA
From 23-JUN-10 09:00:00 to 23-JUN-10 12:00:00 (CST-6)
Location: WILTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rains resulted in flash flooding of Mud Creek near Wilton.