An amplified and vigorous upper level pattern pushed several weak disturbances northeast across the region during the overnight and early morning of May 30th. With ample elevated instability on the order of 2000-2500 J/kg available and effective shear of 35 to 45 knots, storms became severe across south central South Dakota and north central Nebraska and organized into a large scale QLCS as it moved east and northeast into Minnesota and Iowa late night. Several QLCS tornadoes developed from the Sioux Falls area eastward. Widespread winds of 60 to 90 mph caused scattered tree damage, with isolated pockets of more significant structural damage. Presidential Disaster Declarations were granted to Lyon, Rock, and Nobles Counties in Minnesota for damages to public infrastructure.

Tornado in LYON, IOWA
From 30-MAY-22 01:21:00 to 30-MAY-22 01:22:00 (CST-6)
Location: DOON
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A brief tornado developed on the south side of Doon, and traveled northeast across the southeast side of town before it dissipated at the eastern edge of town. Damage was primarily to trees, with some peripheral damage to a playset near the touchdown, and an older garage near the end of the track. The estimated maximum wind was 85 mph and the average path width was 50 yards.

Thunderstorm Wind in LYON, IOWA
From 30-MAY-22 01:16:00 to 30-MAY-22 01:18:00 (CST-6)
Location: LESTER
Magnitude: 78.00 EG
Reported by: NWS Storm Survey

A significant portion of the roof of a livestock building was removed by thunderstorm winds.

Thunderstorm Wind in LYON, IOWA
From 30-MAY-22 01:18:00 to 30-MAY-22 01:20:00 (CST-6)
Location: ROCK RAPIDS MUNI ARP
Magnitude: 74.00 EG
Reported by: NWS Storm Survey

Numerous outbuildings and a grain bin were destroyed by strong thunderstorm winds.

Thunderstorm Wind in IDA, IOWA
From 30-MAY-22 05:40:00 to 30-MAY-22 05:42:00 (CST-6)
Location: GALVA
Magnitude: 61.00 EG
Reported by: Public

Thunderstorm winds damaged several outbuildings and downed several trees.

Thunderstorm Wind in IDA, IOWA
From 30-MAY-22 05:40:00 to 30-MAY-22 05:42:00 (CST-6)
Location: GALVA
Magnitude: 61.00 EG
Reported by: Public

Thunderstorm winds downed a large tree.

Thunderstorm Wind in CLAY, IOWA
From 30-MAY-22 06:55:00 to 30-MAY-22 06:57:00 (CST-6)
Location: (3SE)SPENCER MUNI AR
Magnitude: 52.00 MG
Reported by: ASOS

A thunderstorm wind gust of 60 mph was measured by the Automated Surface Observing System site KSPW 4 miles west-northwest of Spencer.

Thunderstorm Wind in IDA, IOWA
From 30-MAY-22 05:42:00 to 30-MAY-22 05:43:00 (CST-6)
Location: GALVA
Magnitude: 61.00 EG
Reported by: Trained Spotter

Thunderstorm winds uprooted or snapped several trees.

Thunderstorm Wind in IDA, IOWA
From 30-MAY-22 05:33:00 to 30-MAY-22 05:35:00 (CST-6)
Location: IDA GROVE
Magnitude: 65.00 EG
Reported by: Trained Spotter

Thunderstorm wind gusts brought down numerous large tree limbs, with several trees snapped or uprooted.

Tornado in LYON, IOWA
From 30-MAY-22 01:17:00 to 30-MAY-22 01:19:00 (CST-6)
Location: ROCK RAPIDS MUNI ARP
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A tornado spun up near the intersection of Fig Avenue and 140th Street.  On a northeastward track, the tornado impacted two farmsteads around a mile apart, with significant roof damage done to outbuildings at each location, as well as destruction of a  large grain bin.  The tornado tracked a few hundred yards beyond the final farm before dissipating in an open field. The estimated maximum wind was 90 mph and the average path width was 75 yards.