Showers and thunderstorms, some severe, moved eastward across parts of eastern Iowa and northwest Illinois during the predawn hours of June 9.  The stronger storms produced damaging winds and torrential rains, along with a few large hail stones.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:34:00 to 09-JUN-11 04:34:00 (CST-6)
Location: RAPIDS CITY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 60 mph wind gust was recorded about 6 miles northeast of East Moline, IL at 534 am CDT June 9.

Hail in WHITESIDE, ILLINOIS
From 09-JUN-11 04:54:00 to 09-JUN-11 04:54:00 (CST-6)
Location: TAMPICO
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half dollar sized hail fell in Tampico, IL at 554 am CDT June 9.

Thunderstorm Wind in HENRY, ILLINOIS
From 09-JUN-11 05:00:00 to 09-JUN-11 05:00:00 (CST-6)
Location: KEWANEE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 65 mph blew down some 7 to 8 inch diameter tree limbs in Kewanee, IL around 600 am CDT June 9.

Flash Flood in WHITESIDE, ILLINOIS
From 09-JUN-11 05:40:00 to 09-JUN-11 10:00:00 (CST-6)
Location: ROCK FALLS
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rains resulted in flash flooding of several streets in Rock Falls, IL during the morning of June 9.  The flood waters were 2 to 4 feet deep in some areas.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:30:00 to 09-JUN-11 04:30:00 (CST-6)
Location: COAL VLY
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 75 mph blew down a tree onto a car and house in Coal Valley, IL around 530 am CDT June 9.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:20:00 to 09-JUN-11 04:20:00 (CST-6)
Location: MOLINE
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 near the Rock Island Arsenal bridge in Moline, IL at 520 am CDT June 9.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:25:00 to 09-JUN-11 04:25:00 (CST-6)
Location: (MLI) QUAD CITY ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 63 mph wind gust was recorded by the ASOS at the Quad City Airport in Moline, IL at 525 am CDT June 9.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:26:00 to 09-JUN-11 04:26:00 (CST-6)
Location: MOLINE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 65 mph blew down some huge tree limbs in Moline, IL at 526 am CDT June 9.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:26:00 to 09-JUN-11 04:26:00 (CST-6)
Location: MOLINE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 75 mph were observed in Moline, IL at 526 am CDT June 9.

Hail in ROCK ISLAND, ILLINOIS
From 09-JUN-11 04:29:00 to 09-JUN-11 04:29:00 (CST-6)
Location: MOLINE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter