A frontal boundary draped across south central Iowa provided the focus for training severe thunderstorms on the evening of June 18th. With MUCAPE over 2000 J/kg and an inverted-v sounding profile, both large hail and damaging winds were supported. Storms developed along the front and produced hail from quarter to golf ball sized along with a report of up to four hail, plus damaging winds and heavy rain from training storms.

Hail in UNION, IOWA
From 18-JUN-21 21:39:00 to 18-JUN-21 21:39:00 (CST-6)
Location: LORIMOR
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report via images on social media. Time estimated via radar.

Hail in LUCAS, IOWA
From 18-JUN-21 21:55:00 to 18-JUN-21 21:55:00 (CST-6)
Location: CHARITON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Lucas county sheriff office reported quarter sized hail at the office.

Hail in LUCAS, IOWA
From 18-JUN-21 21:55:00 to 18-JUN-21 21:55:00 (CST-6)
Location: CHARITON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of quarter sized hail.

Hail in LUCAS, IOWA
From 18-JUN-21 21:55:00 to 18-JUN-21 21:55:00 (CST-6)
Location: CHARITON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report relayed via broadcast media on social media.

Thunderstorm Wind in MARION, IOWA
From 18-JUN-21 21:55:00 to 18-JUN-21 21:55:00 (CST-6)
Location: PLEASANTVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reported powerlines down.

Hail in MONROE, IOWA
From 18-JUN-21 22:12:00 to 18-JUN-21 22:12:00 (CST-6)
Location: MELROSE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported two inch hail and wind gusts up to 65 mph.

Hail in MARION, IOWA
From 18-JUN-21 22:13:00 to 18-JUN-21 22:13:00 (CST-6)
Location: DURHAM
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of hail near red rock dam via social media.

Hail in MARION, IOWA
From 18-JUN-21 22:15:00 to 18-JUN-21 22:15:00 (CST-6)
Location: PELLA MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of quarter hail at Howell station campground near red rock.

Hail in LUCAS, IOWA
From 18-JUN-21 22:23:00 to 18-JUN-21 22:23:00 (CST-6)
Location: CHARITON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of penny sized hail.

Hail in APPANOOSE, IOWA
From 18-JUN-21 22:30:00 to 18-JUN-21 22:30:00 (CST-6)
Location: ICONIUM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball hail report via mping.

Hail in LUCAS, IOWA
From 18-JUN-21 21:59:00 to 18-JUN-21 21:59:00 (CST-6)
Location: CHARITON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping.

Thunderstorm Wind in MARION, IOWA
From 18-JUN-21 22:05:00 to 18-JUN-21 22:05:00 (CST-6)
Location: KNOXVILLE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree knocked down. Report via social media.

Hail in MARION, IOWA
From 18-JUN-21 22:06:00 to 18-JUN-21 22:06:00 (CST-6)
Location: KNOXVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report via social media.

Hail in WAYNE, IOWA
From 18-JUN-21 22:07:00 to 18-JUN-21 22:07:00 (CST-6)
Location: CONFIDENCE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Mostly quarter to golf ball sized hail with sporadic tennis ball sized hail. Report via social media and relayed by broadcast media. Time estimated via radar.

Hail in WARREN, IOWA
From 18-JUN-21 22:08:00 to 18-JUN-21 22:08:00 (CST-6)
Location: INDIANOLA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail.

Hail in CLARKE, IOWA
From 18-JUN-21 22:30:00 to 18-JUN-21 22:30:00 (CST-6)
Location: WOODBURN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball hail report via social media.

Hail in CASS, IOWA
From 18-JUN-21 22:32:00 to 18-JUN-21 22:32:00 (CST-6)
Location: ATLANTIC
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

KJAN studios relayed report of quarter to half dollar sized hail.

Hail in ADAIR, IOWA
From 18-JUN-21 22:33:00 to 18-JUN-21 22:33:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 4.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported large 4 inch irregular shaped hail stone.

Hail in MARION, IOWA
From 18-JUN-21 22:35:00 to 18-JUN-21 22:35:00 (CST-6)
Location: DURHAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf ball sized hail reported near red rock camp grounds.

Thunderstorm Wind in WAYNE, IOWA
From 18-JUN-21 22:37:00 to 18-JUN-21 22:37:00 (CST-6)
Location: HUMESTON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Fire department reports power pole snapped at base and with another snapped three fourths of the way up. Time estimated via radar.

Hail in ADAIR, IOWA
From 18-JUN-21 21:05:00 to 18-JUN-21 21:05:00 (CST-6)
Location: ZION
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reports lots of golf ball sized hail.

Hail in WARREN, IOWA
From 18-JUN-21 21:09:00 to 18-JUN-21 21:09:00 (CST-6)
Location: MEDORA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Delayed report. Time estimated via radar.

Hail in WARREN, IOWA
From 18-JUN-21 21:20:00 to 18-JUN-21 21:20:00 (CST-6)
Location: LIBERTY CENTER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Delayed report of half dollar sized hail relayed via social media. Time estimated via radar.

Hail in WARREN, IOWA
From 18-JUN-21 21:20:00 to 18-JUN-21 21:20:00 (CST-6)
Location: LIBERTY CENTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Delayed report. Time estimated via radar.

Hail in WARREN, IOWA
From 18-JUN-21 21:33:00 to 18-JUN-21 21:33:00 (CST-6)
Location: LIBERTY CENTER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported half dollar sized hail.

Hail in WARREN, IOWA
From 18-JUN-21 22:08:00 to 18-JUN-21 22:08:00 (CST-6)
Location: INDIANOLA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping.

Hail in MARION, IOWA
From 18-JUN-21 22:08:00 to 18-JUN-21 22:08:00 (CST-6)
Location: FLAGLER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Delayed report of golf ball sized hail. Time estimated via radar.

Hail in MARION, IOWA
From 18-JUN-21 22:09:00 to 18-JUN-21 22:09:00 (CST-6)
Location: KNOXVILLE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Delayed report of 2 inch hail relayed by broadcast media via social media. Time estimated via radar.

Hail in CLARKE, IOWA
From 18-JUN-21 22:10:00 to 18-JUN-21 22:10:00 (CST-6)
Location: OSCEOLA MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail.

Hail in MARION, IOWA
From 18-JUN-21 22:10:00 to 18-JUN-21 22:10:00 (CST-6)
Location: LAKE RED ROCK
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report via social media.

Hail in WARREN, IOWA
From 18-JUN-21 22:46:00 to 18-JUN-21 22:46:00 (CST-6)
Location: CUMMING
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Relayed report of quarter sized hail. Time estimated via radar.

Thunderstorm Wind in WAPELLO, IOWA
From 18-JUN-21 22:56:00 to 18-JUN-21 22:56:00 (CST-6)
Location: BLAKESBURG
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Blakesburg Fire department reported heavy tree damage in the area with minor damage to homes with soffits torn off.

Heavy Rain in DAVIS, IOWA
From 18-JUN-21 06:00:00 to 19-JUN-21 06:00:00 (CST-6)
Location: FLORIS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS reported 3.08 inches of rain in 24 hours.

Heavy Rain in DAVIS, IOWA
From 18-JUN-21 06:00:00 to 19-JUN-21 06:00:00 (CST-6)
Location: ASH GROVE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS reported 2.50 inches of rain in 24 hours.

Heavy Rain in WARREN, IOWA
From 18-JUN-21 07:34:00 to 19-JUN-21 07:34:00 (CST-6)
Location: NEW VIRGINIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.46 inches of rain in 24 hours.

Heavy Rain in WARREN, IOWA
From 18-JUN-21 08:58:00 to 19-JUN-21 08:58:00 (CST-6)
Location: COOL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.10 inches of rain in 24 hours.

Heavy Rain in APPANOOSE, IOWA
From 18-JUN-21 15:58:00 to 19-JUN-21 15:58:00 (CST-6)
Location: UNIONVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 3.80 inches of rain in 24 hours.

Heavy Rain in WAPELLO, IOWA
From 18-JUN-21 16:29:00 to 19-JUN-21 16:29:00 (CST-6)
Location: DAHLONEGA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 3.50 inches of rain in 24 hours.

Heavy Rain in WARREN, IOWA
From 18-JUN-21 19:53:00 to 19-JUN-21 19:53:00 (CST-6)
Location: MEDORA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.35 inches of rain in 24 hours.

Heavy Rain in MONROE, IOWA
From 18-JUN-21 06:24:00 to 19-JUN-21 06:24:00 (CST-6)
Location: ALBIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.46 inches of rain in 24 hours.