An upper-level trough with associated surface low pushed across the northern plains, pulling a cool front into Iowa. Scattered convection developed along the boundary, resulting in damaging wind gusts. A brief EFU tornado also developed over open land in northern Iowa. This system grew upscale overnight, bringing heavy rain to north-central Iowa.

Heavy Rain in GRUNDY, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: GRUNDY CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.75 inches.

Heavy Rain in HANCOCK, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: KANAWHA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.54 inches.

Heavy Rain in HARDIN, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: ELDORA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported a 24 hour rainfall total of 2.63 inches.

Heavy Rain in HARDIN, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: IOWA FALLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 3.15 inches.

Heavy Rain in WINNEBAGO, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: LAKE MILLS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.03 inches.

Heavy Rain in MARSHALL, IOWA
From 18-JUN-20 06:53:00 to 19-JUN-20 06:53:00 (CST-6)
Location: MARSHALLTOWN ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS reported a 24 hour rainfall total of 2.12 inches.

Heavy Rain in HARDIN, IOWA
From 18-JUN-20 07:00:00 to 19-JUN-20 07:00:00 (CST-6)
Location: STEAMBOAT ROCK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 3.2 inches.

Tornado in KOSSUTH, IOWA
From 18-JUN-20 17:37:00 to 18-JUN-20 17:38:00 (CST-6)
Location: GERMAN VLY
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Several pictures and one video obtained via social media tracked a tornado across rural Kossuth county.  The tornado produced no impacts to damage indicators, hence the EFU rating.

Thunderstorm Wind in CRAWFORD, IOWA
From 18-JUN-20 15:31:00 to 18-JUN-20 15:31:00 (CST-6)
Location: SCHLESWIG
Magnitude: 52.00 EG
Reported by: Department of Highways

US highway 59 blocked due to downed tree and power lines.

Thunderstorm Wind in SAC, IOWA
From 18-JUN-20 15:55:00 to 18-JUN-20 15:55:00 (CST-6)
Location: ODEBOLT
Magnitude: 52.00 EG
Reported by: Broadcast Media

Broadcast media relayed report of large trees down. Time estimated via radar.

Thunderstorm Wind in SAC, IOWA
From 18-JUN-20 16:00:00 to 18-JUN-20 16:00:00 (CST-6)
Location: ODEBOLT
Magnitude: 55.00 EG
Reported by: Public

Public report of damage to several sheet metal outbuildings including collapse or partial collapse of walls and damage to roof.

Thunderstorm Wind in KOSSUTH, IOWA
From 18-JUN-20 18:00:00 to 18-JUN-20 18:00:00 (CST-6)
Location: TITONKA
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter reported numerous large tree branches down with power lines down in Titonka. Time estimated via radar.

Thunderstorm Wind in KOSSUTH, IOWA
From 18-JUN-20 18:00:00 to 18-JUN-20 18:00:00 (CST-6)
Location: TITONKA
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter reported numerous large tree branches down with power lines down in Titonka. Time estimated via radar.

Heavy Rain in HARDIN, IOWA
From 18-JUN-20 20:30:00 to 19-JUN-20 03:24:00 (CST-6)
Location: ELDORA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 3.25 inches of rain. Begin time estimated via radar.

Heavy Rain in EMMET, IOWA
From 18-JUN-20 04:00:00 to 19-JUN-20 04:00:00 (CST-6)
Location: RINGSTED
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.35 inches.

Heavy Rain in WORTH, IOWA
From 18-JUN-20 04:42:00 to 19-JUN-20 04:42:00 (CST-6)
Location: GRAFTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported a 24 hour rainfall total of 2.38 inches.

Heavy Rain in WORTH, IOWA
From 18-JUN-20 05:00:00 to 19-JUN-20 05:00:00 (CST-6)
Location: GRAFTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report via social media of 2.38 inches of rain as a 24 hour total.

Heavy Rain in PALO ALTO, IOWA
From 18-JUN-20 16:00:00 to 18-JUN-20 20:30:00 (CST-6)
Location: GRAETTINGER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 2.25 inches of rain. Beginning and end time estimated via radar.

Heavy Rain in GRUNDY, IOWA
From 18-JUN-20 05:50:00 to 19-JUN-20 05:50:00 (CST-6)
Location: GRUNDY CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.75 inches.

Heavy Rain in BUTLER, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: KESLEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported a 24 hour rainfall total of 2.10 inches.

Heavy Rain in CERRO GORDO, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: SWALEDALE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer reported a 24 hour rainfall total of 2.54 inches.

Heavy Rain in FRANKLIN, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: HAMPTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.70 inches.

Heavy Rain in FRANKLIN, IOWA
From 18-JUN-20 06:00:00 to 19-JUN-20 06:00:00 (CST-6)
Location: HAMPTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported a 24 hour rainfall total of 2.70 inches.