A line of showers and thunderstorms moved across parts of eastern Iowa and Illinois during the afternoon and evening of June 23. These storms produced rainfall amounts of 1 to 2 inches and strong winds of 60 to 80 mph. Temperatures were in upper 80s with some locations topping into the lower 90s. The storms also produced heavy rains which flooded some roads in Muscatine, Iowa. Quarter-sized hail in fell in Scott County Iowa. The showers and thunderstorms tapered off as a cold front pushed through the region during the late evening and overnight hours.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:00:00 to 23-JUN-10 16:00:00 (CST-6)
Location: CAMBRIDGE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 65 mph blew a large tree limb down 1 mile west of Cambridge, IL at 500 pm June 23.  Several other smaller branches were also blown down.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:10:00 to 23-JUN-10 16:10:00 (CST-6)
Location: GENESEO
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Wind gusts estimated to be 60 to 70 mph blew down large trees and  limbs in and around Atkinson at between 505 and 510 pm CDT June 23.  One resident noted that the time was 508 pm (CDT) when his 40-foot tree landed on the roof of his house in Atkinson.  The former elementary school roof sustained extensive damage; the baseball dugouts were blown down; a barn and a large agricultural building were unroofed; the roof of the gymnasium was also damaged.  Most residents were without power for about 24 hours.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:03:00 to 23-JUN-10 16:03:00 (CST-6)
Location: CAMBRIDGE
Magnitude: 56.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Newspaper

Severe thunderstorm winds damaged tents, concession booths, fences, and large trees at the county fairgrounds, where the annual county fair was underway.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:01:00 to 23-JUN-10 16:01:00 (CST-6)
Location: GENESEO
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 70 mph downed power lines, uprooted several trees, and broke tree limbs in Geneseo, IL.  The local newspaper showed several trees and large limbs that landed on homes.

Thunderstorm Wind in BUREAU, ILLINOIS
From 23-JUN-10 16:03:00 to 23-JUN-10 16:03:00 (CST-6)
Location: MANLIUS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 60 mph were observed in Manlius, IL at 503 pm CDT June 23.

Flash Flood in WHITESIDE, ILLINOIS
From 23-JUN-10 16:18:00 to 23-JUN-10 18:00:00 (CST-6)
Location: GRIMES ADDITION
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rains resulted in flash flooding of some streets in Rock Falls, IL during the evening of June 23.  The water was up to a foot deep.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:10:00 to 23-JUN-10 16:20:00 (CST-6)
Location: ANNAWAN
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 just south of Annawan, IL between 510 pm and 520 pm CDT June 23.  Corn in several area fields were leaning or flattened.

Flash Flood in WARREN, ILLINOIS
From 23-JUN-10 17:00:00 to 23-JUN-10 19:00:00 (CST-6)
Location: KIRKWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rains resulted in flash flooding of the Kirkwood Blacktop or Route 135 just to the north of Kirkwood, IL during the evening of June 23.  Water was waist-deep in places on South First Street.

Lightning in HANCOCK, ILLINOIS
From 23-JUN-10 17:10:00 to 23-JUN-10 17:10:00 (CST-6)
Location: FERRIS
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A car was struck by lightning on Highway 94 about 5 miles north of Carthage, IL at 610 pm.  The car was disabled.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:23:00 to 23-JUN-10 16:23:00 (CST-6)
Location: KEWANEE
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 trees and tree limbs 1 mile west northwest of Kewanee, IL at 523 pm June 23.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:23:00 to 23-JUN-10 16:23:00 (CST-6)
Location: KEWANEE
Magnitude: 61.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts estimated to be 70 mph snapped off 6 power poles and blew down several tree limbs in Kewanee, IL at 523 pm CDT June 23.

Thunderstorm Wind in BUREAU, ILLINOIS
From 23-JUN-10 16:27:00 to 23-JUN-10 16:27:00 (CST-6)
Location: NEPONSET
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 in Neponset, IL at 527 pm June 23.

Thunderstorm Wind in HANCOCK, ILLINOIS
From 23-JUN-10 17:30:00 to 23-JUN-10 17:30:00 (CST-6)
Location: HAMILTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 65 mph blew a tree down onto the highway in Hamilton, IL around 630 pm June 23.

Flash Flood in MCDONOUGH, ILLINOIS
From 23-JUN-10 17:50:00 to 23-JUN-10 20:00:00 (CST-6)
Location: WALNUT GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains resulted in flash flooding of Route 41 north of Bushnell, IL during the evening of June 23.  The highway had to be closed due to the flooding.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 23-JUN-10 16:30:00 to 23-JUN-10 16:30:00 (CST-6)
Location: INDIAN BLUFF PARK
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 65 mph snapped off a 6 inch tree limb onto a power line about 2 miles east northeast of Coyne Center, IL around 530 pm June 23.

Thunderstorm Wind in HENDERSON, ILLINOIS
From 23-JUN-10 16:30:00 to 23-JUN-10 16:30:00 (CST-6)
Location: OQUAWKA
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 70 mph blew down some trees onto a roadway in Oquawka, IL at 530 pm June 23.

Thunderstorm Wind in WARREN, ILLINOIS
From 23-JUN-10 16:34:00 to 23-JUN-10 16:34:00 (CST-6)
Location: MONMOUTH
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 1 mile west of Monmouth, IL at 534 pm June 23.

Thunderstorm Wind in WARREN, ILLINOIS
From 23-JUN-10 16:35:00 to 23-JUN-10 16:35:00 (CST-6)
Location: MONMOUTH
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 1 mile west of Monmouth, IL at 535 pm CDT June 23.  Trees were downed in Monmouth.

Thunderstorm Wind in HENRY, ILLINOIS
From 23-JUN-10 16:36:00 to 23-JUN-10 16:36:00 (CST-6)
Location: ANNAWAN
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated to be 80 mph were observed in Annawan, IL at 536 pm June 23.

Thunderstorm Wind in BUREAU, ILLINOIS
From 23-JUN-10 16:45:00 to 23-JUN-10 16:45:00 (CST-6)
Location: DEPUE
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Severe thunderstorm winds uprooted a large tree, toplling it on the neighboring house.

Thunderstorm Wind in BUREAU, ILLINOIS
From 23-JUN-10 16:45:00 to 23-JUN-10 16:45:00 (CST-6)
Location: SPRING VLY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 75 mph blew down several trees on Terry Street in Spring Valley, IL around 545 pm June 23.  This report was relayed be another spotter.

Thunderstorm Wind in WARREN, ILLINOIS
From 23-JUN-10 16:40:00 to 23-JUN-10 16:40:00 (CST-6)
Location: KIRKWOOD
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 10 inch diameter tree limbs on the north side of Kirkwood, IL at 540 pm June 23.

Thunderstorm Wind in BUREAU, ILLINOIS
From 23-JUN-10 16:46:00 to 23-JUN-10 16:46:00 (CST-6)
Location: CHERRY
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 85 mph were observed 5 miles north northeast of Ladd, IL around 546 pm June 23.

Thunderstorm Wind in WARREN, ILLINOIS
From 23-JUN-10 16:47:00 to 23-JUN-10 16:47:00 (CST-6)
Location: MONMOUTH
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts measured to be 60 mph were observed 4 miles west southwest of Coldbrook, IL at 547 pm June 23.

Thunderstorm Wind in BUREAU, ILLINOIS
From 23-JUN-10 16:51:00 to 23-JUN-10 16:51:00 (CST-6)
Location: ZEARING
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated to be 80 mph toppled a corn crib and blew down several tree limbs 5 miles west northwest of Ladd, IL at 551 pm June 23.

Thunderstorm Wind in PUTNAM, ILLINOIS
From 23-JUN-10 16:50:00 to 23-JUN-10 16:55:00 (CST-6)
Location: GRANVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 70 mph blew down power poles and large trees on the south side of Spring Valley beginning around 550 pm CDT June 23. Areas most affected included Highway 89 on the south side of town, Oakdale Avenue, Marquette Road, and Ladd Road.  The local newspaper included reports and pictures of many trees that fell onto cars, houses, and decks causing structural damage.  The bleachers at the Hall High School track were also overturned and crumpled by the wind.

Thunderstorm Wind in PUTNAM, ILLINOIS
From 23-JUN-10 16:58:00 to 23-JUN-10 16:58:00 (CST-6)
Location: GOOSE LAKE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 65 mph blew a tree down in Lake Thunderbird, IL at 558 pm CDT June 23.

Thunderstorm Wind in HENDERSON, ILLINOIS
From 23-JUN-10 16:30:00 to 23-JUN-10 16:30:00 (CST-6)
Location: OQUAWKA
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Wind gusts knocked down power poles, leaving residents of Biggsville without opwer for about 24 hours.

Flash Flood in HENDERSON, ILLINOIS
From 23-JUN-10 17:00:00 to 23-JUN-10 20:00:00 (CST-6)
Location: OQUAWKA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rains resulted in flash flooding and closure of several county roads.

Thunderstorm Wind in CARROLL, ILLINOIS
From 23-JUN-10 15:30:00 to 23-JUN-10 15:30:00 (CST-6)
Location: MS PALLISADES SP
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts estimated to be 65 mph blew a tree down across Highway 84 just north of Savanna, IL at 430 pm June 23.

Thunderstorm Wind in ROCK ISLAND, ILLINOIS
From 23-JUN-10 15:36:00 to 23-JUN-10 15:36:00 (CST-6)
Location: (MLI) QUAD CITY ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind gusts measured to be 63 mph were observed by the ASOS at the Quad City Airport in Moline, IL at 436 pm June 23.

Lightning in ROCK ISLAND, ILLINOIS
From 23-JUN-10 15:54:00 to 23-JUN-10 15:54:00 (CST-6)
Location: MILAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Four adults were shocked by a nearby lightning strike at the KOA campground in Rock Island, IL at 454 pm CDT June 23.  The Boy Scout leaders were attempting to hold down an awning when the lightning struck.  One person complained about a difficulty hearing and was transported to a hospital.

Flash Flood in HENRY, ILLINOIS
From 23-JUN-10 16:00:00 to 23-JUN-10 20:00:00 (CST-6)
Location: SUNNY HILL
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rains resulted in flash flooding in the Cambridge, Kewanee, and Orion, IL areas during the late afternoon and evening of June 23.  Streets just west of Cambridge, IL were flooded.  Highway 78 going into Kewanee had 8 to 10 inches of water covering it.  The intersection of E 200th Street and N 1200th Avenue about 2 miles south southwest of Orion, IL was covered with flood waters from runoff from nearby farm fields.