Late afternoon thunderstorms developed in the exit region of a strong jet streak in northwest flow aloft, focused along a prefrontal trough as it moved from southeast South Dakota into northwest Iowa. Storms quickly became severe, with MLCAPE of up to 1500 J/kg and deep layer shear around 40 knots.

Hail in SIOUX, IOWA
From 10-JUL-23 15:48:00 to 10-JUL-23 15:49:00 (CST-6)
Location: HULL
Magnitude: 1.50 
Reported by: Trained Spotter

Large hail was accompanied by winds up to 50 mph.

Hail in O'BRIEN, IOWA
From 10-JUL-23 16:21:00 to 10-JUL-23 16:23:00 (CST-6)
Location: SANBORN
Magnitude: 1.00 
Reported by: Public

Hail in DICKINSON, IOWA
From 10-JUL-23 16:43:00 to 10-JUL-23 16:45:00 (CST-6)
Location: ARNOLDS PARK
Magnitude: 0.75 
Reported by: Emergency Manager

Thunderstorm Wind in SIOUX, IOWA
From 10-JUL-23 15:42:00 to 10-JUL-23 15:44:00 (CST-6)
Location: ROCK VLY
Magnitude: 61.00 EG
Reported by: Trained Spotter

Multiple three to four inch diameter tree limbs were downed by thunderstorm wind gusts.

Hail in OSCEOLA, IOWA
From 10-JUL-23 16:19:00 to 10-JUL-23 16:22:00 (CST-6)
Location: ASHTON
Magnitude: 1.25 
Reported by: Public

Thunderstorm Wind in DICKINSON, IOWA
From 10-JUL-23 17:18:00 to 10-JUL-23 17:20:00 (CST-6)
Location: TERRIL
Magnitude: 61.00 EG
Reported by: Emergency Manager

A power pole was forced to lean over and several large tree branches were broken by thunderstorm winds.

Thunderstorm Wind in O'BRIEN, IOWA
From 10-JUL-23 16:15:00 to 10-JUL-23 16:16:00 (CST-6)
Location: RITTER
Magnitude: 52.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in OSCEOLA, IOWA
From 10-JUL-23 16:30:00 to 10-JUL-23 16:32:00 (CST-6)
Location: MAY CITY
Magnitude: 78.00 EG
Reported by: Public

The roof of an outbuilding was tossed approximately 200 yards by thunderstorm winds.
A large walnut tree was also snapped off.

Thunderstorm Wind in DICKINSON, IOWA
From 10-JUL-23 16:54:00 to 10-JUL-23 16:56:00 (CST-6)
Location: FULLER FLD ARPT
Magnitude: 56.00 EG
Reported by: Emergency Manager

A large tree branch was blown down across a road.

Thunderstorm Wind in DICKINSON, IOWA
From 10-JUL-23 17:14:00 to 10-JUL-23 17:15:00 (CST-6)
Location: TERRIL
Magnitude: 50.00 MG
Reported by: Mesonet

Thunderstorm wind gusts were measured by mesonet station IATERRI4.

Thunderstorm Wind in DICKINSON, IOWA
From 10-JUL-23 16:43:00 to 10-JUL-23 16:45:00 (CST-6)
Location: LAKE PARK
Magnitude: 52.00 EG
Reported by: Emergency Manager

Strong thunderstorm wind gusts were accompanied by hail up to dime size.

Thunderstorm Wind in DICKINSON, IOWA
From 10-JUL-23 17:14:00 to 10-JUL-23 17:15:00 (CST-6)
Location: TERRIL
Magnitude: 54.00 MG
Reported by: Mesonet

Thunderstorm wind gusts up to 62 mph were measured by a personal weather station.

Hail in SIOUX, IOWA
From 10-JUL-23 16:11:00 to 10-JUL-23 16:12:00 (CST-6)
Location: MATLOCK
Magnitude: 1.00 
Crop damage: 319.00K
Reported by: Trained Spotter

Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in O'BRIEN, IOWA
From 10-JUL-23 16:15:00 to 10-JUL-23 16:17:00 (CST-6)
Location: RITTER
Magnitude: 1.75 
Crop damage: 42.00K
Reported by: Trained Spotter

Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Hail in OSCEOLA, IOWA
From 10-JUL-23 16:21:00 to 10-JUL-23 16:22:00 (CST-6)
Location: ASHTON
Magnitude: 1.75 
Crop damage: 592.00K
Reported by: Trained Spotter

Hail ranged in size from pea to golf ball size. A few smaller tree limbs were also downed by thunderstorm winds.