Several rounds of severe thunderstorms impacted the area on Sunday May 7, 2023.  Two areas of storms were present during the mid to late afternoon, one entering the Cedar Rapids and Iowa City metros and another around the Burlington and Fort Madison metros. The first was the most severe, producing hail up to baseball size in Koszta, Iowa and widespread wind damage, especially around West Liberty, Iowa. This storm, and storms to the west, eventually merged into a cluster of severe thunderstorms, producing large hail and destructive winds around 70-75 mph all the way to Mount Pleasant, Iowa and Macomb, Illinois. The latter produced sporadic reports of quarter to half dollar sized hail, along with a brief landspout tornado east of Yorktown, IL.  There was also severe blowing dust which was especially bad near I-55 in north central Illinois. Even more thunderstorms developed overnight across the area, and mainly produced torrential rain and isolated large hail reports.

Hail in WASHINGTON, IOWA
From 07-MAY-23 16:40:00 to 07-MAY-23 16:55:00 (CST-6)
Location: KALONA
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MUSCATINE, IOWA
From 07-MAY-23 17:21:00 to 07-MAY-23 17:35:00 (CST-6)
Location: FRUITLAND
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in LEE, IOWA
From 07-MAY-23 16:04:00 to 07-MAY-23 16:10:00 (CST-6)
Location: DENMARK
Magnitude: 1.25 
Reported by: Emergency Manager

Hail in IOWA, IOWA
From 07-MAY-23 16:10:00 to 07-MAY-23 16:20:00 (CST-6)
Location: WILLIAMSBURG
Magnitude: 1.00 
Reported by: COOP Observer

Hail in WASHINGTON, IOWA
From 07-MAY-23 17:26:00 to 07-MAY-23 17:35:00 (CST-6)
Location: WASHINGTON ARPT
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in JEFFERSON, IOWA
From 07-MAY-23 17:35:00 to 07-MAY-23 17:45:00 (CST-6)
Location: PERLEE
Magnitude: 1.75 
Reported by: Public

Hail in MUSCATINE, IOWA
From 07-MAY-23 17:31:00 to 07-MAY-23 17:40:00 (CST-6)
Location: FRUITLAND
Magnitude: 1.00 
Reported by: Public

Report from Mping.

Hail in DES MOINES, IOWA
From 07-MAY-23 18:10:00 to 07-MAY-23 18:25:00 (CST-6)
Location: MEDIAPOLIS
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in DES MOINES, IOWA
From 07-MAY-23 18:30:00 to 07-MAY-23 18:45:00 (CST-6)
Location: BEAVERDALE
Magnitude: 1.00 
Reported by: Public

Winds gusting upwards of 60 to 65 mph.

Hail in DES MOINES, IOWA
From 07-MAY-23 18:34:00 to 07-MAY-23 18:45:00 (CST-6)
Location: WEST BURLINGTON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in HENRY, IOWA
From 07-MAY-23 18:20:00 to 07-MAY-23 18:40:00 (CST-6)
Location: MT PLEASANT
Magnitude: 2.00 
Reported by: Public

Hail in BUCHANAN, IOWA
From 07-MAY-23 20:45:00 to 07-MAY-23 20:58:00 (CST-6)
Location: LITTLETON
Magnitude: 1.25 
Reported by: COOP Observer

Thunderstorm Wind in IOWA, IOWA
From 07-MAY-23 15:32:00 to 07-MAY-23 15:40:00 (CST-6)
Location: KOSZTA
Magnitude: 61.00 EG
Reported by: Public

Estimated 70 mph winds near G Avenue and 212.

Thunderstorm Wind in IOWA, IOWA
From 07-MAY-23 15:33:00 to 07-MAY-23 15:40:00 (CST-6)
Location: MARENGO
Magnitude: 56.00 EG
Reported by: Trained Spotter

Estimated 60 mph winds from thunderstorm.

Thunderstorm Wind in IOWA, IOWA
From 07-MAY-23 15:35:00 to 07-MAY-23 15:40:00 (CST-6)
Location: MARENGO
Magnitude: 52.00 EG
Reported by: Public

Estimated winds of 60 mph and higher.

Hail in BENTON, IOWA
From 07-MAY-23 15:05:00 to 07-MAY-23 15:18:00 (CST-6)
Location: BELLE PLAINE
Magnitude: 1.00 
Reported by: Fire Department/Rescue

Hail in BENTON, IOWA
From 07-MAY-23 15:05:00 to 07-MAY-23 15:18:00 (CST-6)
Location: BELLE PLAINE
Magnitude: 1.50 
Reported by: COOP Observer

Thunderstorm Wind in IOWA, IOWA
From 07-MAY-23 15:57:00 to 07-MAY-23 16:05:00 (CST-6)
Location: AMANA APT
Magnitude: 65.00 EG
Reported by: Trained Spotter

Gutters blown off, with a 10 inch diameter branch down. A dumpster also blew down an alley.

Thunderstorm Wind in IOWA, IOWA
From 07-MAY-23 15:56:00 to 07-MAY-23 16:05:00 (CST-6)
Location: MIDDLE AMANA
Magnitude: 56.00 EG
Reported by: Public

Estimated 65 mph wind gust with thunderstorm.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 15:58:00 to 07-MAY-23 16:10:00 (CST-6)
Location: COSGROVE
Magnitude: 61.00 EG
Reported by: Emergency Manager

Semi blown over on Interstate 80 near Mile Marker 232. Time estimated from radar.

Hail in BENTON, IOWA
From 07-MAY-23 15:05:00 to 07-MAY-23 15:18:00 (CST-6)
Location: BELLE PLAINE
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in BENTON, IOWA
From 07-MAY-23 15:19:00 to 07-MAY-23 15:35:00 (CST-6)
Location: LUZERNE
Magnitude: 1.00 
Reported by: Amateur Radio

One inch hail and a wind gust of 54 mph.

Hail in BENTON, IOWA
From 07-MAY-23 15:23:00 to 07-MAY-23 15:35:00 (CST-6)
Location: LUZERNE
Magnitude: 1.75 
Reported by: Amateur Radio

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:10:00 to 07-MAY-23 16:20:00 (CST-6)
Location: TIFFIN
Magnitude: 61.00 EG
Reported by: Trained Spotter

Estimated 70 mph wind gust with the thunderstorm.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:09:00 to 07-MAY-23 16:20:00 (CST-6)
Location: TIFFIN
Magnitude: 61.00 EG
Reported by: Trained Spotter

Several significant trees down over 1 foot and a half in diameter.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:00:00 to 07-MAY-23 16:10:00 (CST-6)
Location: IOWA CITY
Magnitude: 56.00 EG
Reported by: Trained Spotter

Several medium sized tree limbs blown down.

Hail in IOWA, IOWA
From 07-MAY-23 15:28:00 to 07-MAY-23 15:40:00 (CST-6)
Location: KOSZTA
Magnitude: 2.75 
Reported by: Public

Hail in IOWA, IOWA
From 07-MAY-23 15:35:00 to 07-MAY-23 15:48:00 (CST-6)
Location: MARENGO
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in IOWA, IOWA
From 07-MAY-23 15:35:00 to 07-MAY-23 15:48:00 (CST-6)
Location: MARENGO
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:19:00 to 07-MAY-23 16:30:00 (CST-6)
Location: NORTH LIBERTY
Magnitude: 52.00 EG
Reported by: Trained Spotter

Estimated 60 mph wind gust from thunderstorm.

Thunderstorm Wind in CEDAR, IOWA
From 07-MAY-23 16:35:00 to 07-MAY-23 16:45:00 (CST-6)
Location: WEST BRANCH
Magnitude: 61.00 MG
Reported by: Emergency Manager

Estimated 70 mph wind gust from thunderstorm.

Hail in LEE, IOWA
From 07-MAY-23 15:44:00 to 07-MAY-23 15:50:00 (CST-6)
Location: DENMARK
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in IOWA, IOWA
From 07-MAY-23 15:57:00 to 07-MAY-23 16:10:00 (CST-6)
Location: AMANA APT
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in IOWA, IOWA
From 07-MAY-23 15:56:00 to 07-MAY-23 16:10:00 (CST-6)
Location: MIDDLE AMANA
Magnitude: 1.50 
Reported by: Trained Spotter

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:08:00 to 07-MAY-23 16:20:00 (CST-6)
Location: TIFFIN
Magnitude: 64.00 MG
Reported by: Trained Spotter

Estimated 75 mph winds with thunderstorm, with dime to nickel sized hail.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:00:00 to 07-MAY-23 16:10:00 (CST-6)
Location: KENT COUNTY PARK
Magnitude: 61.00 EG
Reported by: Emergency Manager

Damage to hangar at Greencastle Airport. Time estimated from radar.

Hail in LEE, IOWA
From 07-MAY-23 16:03:00 to 07-MAY-23 16:18:00 (CST-6)
Location: WEVER
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in JOHNSON, IOWA
From 07-MAY-23 16:23:00 to 07-MAY-23 16:37:00 (CST-6)
Location: ELMIRA
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LEE, IOWA
From 07-MAY-23 16:09:00 to 07-MAY-23 16:18:00 (CST-6)
Location: WEVER
Magnitude: 1.75 
Reported by: Public

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:11:00 to 07-MAY-23 16:20:00 (CST-6)
Location: NORTH LIBERTY
Magnitude: 52.00 EG
Reported by: Trained Spotter

Several large tree branches down in town, with multiple smaller limbs. Time estimated from radar.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:05:00 to 07-MAY-23 16:15:00 (CST-6)
Location: KENT COUNTY PARK
Magnitude: 61.00 EG
Reported by: Trained Spotter

Several trees down and topped in FW Kent Park. Time estimated.

Hail in JOHNSON, IOWA
From 07-MAY-23 16:24:00 to 07-MAY-23 16:35:00 (CST-6)
Location: NORTH LIBERTY
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LEE, IOWA
From 07-MAY-23 16:10:00 to 07-MAY-23 16:18:00 (CST-6)
Location: WEVER
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in JOHNSON, IOWA
From 07-MAY-23 16:25:00 to 07-MAY-23 16:35:00 (CST-6)
Location: NORTH LIBERTY
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in LINN, IOWA
From 07-MAY-23 16:00:00 to 07-MAY-23 16:10:00 (CST-6)
Location: (CID)CEDAR RAPIDS AR
Magnitude: 57.00 MG
Reported by: ASOS

Estimated 66 mph wind gust at Eastern Iowa Airport ASOS.

Thunderstorm Wind in DES MOINES, IOWA
From 07-MAY-23 16:13:00 to 07-MAY-23 16:25:00 (CST-6)
Location: MIDDLETOWN
Magnitude: 52.00 EG
Reported by: Trained Spotter

Tree blown down.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:29:00 to 07-MAY-23 16:40:00 (CST-6)
Location: IOWA CITY MUNI ARPT
Magnitude: 55.00 MG
Reported by: Trained Spotter

Estimated 63 mph wind gust with thunderstorm.

Hail in JOHNSON, IOWA
From 07-MAY-23 16:22:00 to 07-MAY-23 16:35:00 (CST-6)
Location: CORALVILLE RESV
Magnitude: 1.00 
Reported by: Public

Report from Mping.

Hail in MUSCATINE, IOWA
From 07-MAY-23 16:45:00 to 07-MAY-23 17:00:00 (CST-6)
Location: WEST LIBERTY
Magnitude: 1.00 
Reported by: Public

Report from Mping.

Hail in JOHNSON, IOWA
From 07-MAY-23 16:20:00 to 07-MAY-23 16:35:00 (CST-6)
Location: CORALVILLE RESV
Magnitude: 1.00 
Reported by: Public

Report from Mping.

Thunderstorm Wind in JOHNSON, IOWA
From 07-MAY-23 16:10:00 to 07-MAY-23 16:20:00 (CST-6)
Location: TIFFIN
Magnitude: 65.00 EG
Reported by: Trained Spotter

Estimated 70 to 80 mph wind gusts, with dust and reduced visibility. Also dime to nickel hail.

Thunderstorm Wind in IOWA, IOWA
From 07-MAY-23 15:45:00 to 07-MAY-23 15:55:00 (CST-6)
Location: HOMESTEAD
Magnitude: 61.00 EG
Reported by: Trained Spotter

A 10x10 shed was blown into a fence and several houses nearby on Highway 6 had large trees down.

Hail in MUSCATINE, IOWA
From 07-MAY-23 16:55:00 to 07-MAY-23 17:00:00 (CST-6)
Location: WEST LIBERTY
Magnitude: 1.75 
Reported by: Public

Report from Mping.

Hail in KEOKUK, IOWA
From 07-MAY-23 17:17:00 to 07-MAY-23 17:22:00 (CST-6)
Location: OLLIE
Magnitude: 1.00 
Reported by: Public

Hail in WASHINGTON, IOWA
From 07-MAY-23 17:25:00 to 07-MAY-23 17:32:00 (CST-6)
Location: WASHINGTON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in KEOKUK, IOWA
From 07-MAY-23 16:58:00 to 07-MAY-23 17:05:00 (CST-6)
Location: SIGOURNEY
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in CLINTON, IOWA
From 07-MAY-23 16:52:00 to 07-MAY-23 17:08:00 (CST-6)
Location: ELWOOD
Magnitude: 1.25 
Reported by: Public

Hail in IOWA, IOWA
From 07-MAY-23 15:32:00 to 07-MAY-23 15:48:00 (CST-6)
Location: MARENGO
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in JOHNSON, IOWA
From 07-MAY-23 16:36:00 to 07-MAY-23 16:48:00 (CST-6)
Location: OASIS
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in MUSCATINE, IOWA
From 07-MAY-23 17:00:00 to 07-MAY-23 17:14:00 (CST-6)
Location: ATALISSA
Magnitude: 1.00 
Reported by: Public

Hail in WASHINGTON, IOWA
From 07-MAY-23 17:23:00 to 07-MAY-23 17:30:00 (CST-6)
Location: WASHINGTON
Magnitude: 1.00 
Reported by: Public

Report from Mping.

Hail in JOHNSON, IOWA
From 07-MAY-23 16:13:00 to 07-MAY-23 16:30:00 (CST-6)
Location: OAKDALE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in LEE, IOWA
From 07-MAY-23 15:47:00 to 07-MAY-23 15:55:00 (CST-6)
Location: DENMARK
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in LEE, IOWA
From 07-MAY-23 15:20:00 to 07-MAY-23 15:30:00 (CST-6)
Location: WEST PT
Magnitude: 1.75 
Reported by: Emergency Manager