There was barely a break between the exit of the earlier morning severe convection, and development of the next round during the later morning and early afternoon on May 30th across southeast South Dakota.  A series of impulses moved northeast during the day, with a leading strong wave moving out of Nebraska by early afternoon. Storms blossomed near a cold frontal boundary toward the James River Valley, despite the limited diurnal destabilization, due to steep mid-level lapse rates which brought MLCAPE up to 1500-2000J/kg in the warm sector. Strong mid-level winds led to long, linear hodographs, but strong deep-layer forcing eventually resulted in an evolution toward linear structures with mainly damaging wind.  Near the core of the upper level wave, a secondary band of thunderstorms developed across Nebraska during the late afternoon and raced northeastward through early evening, featuring mainly damaging wind gusts.

Thunderstorm Wind in OSCEOLA, IOWA
From 30-MAY-22 17:52:00 to 30-MAY-22 17:54:00 (CST-6)
Location: ASHTON
Magnitude: 54.00 MG
Crop damage: 1.00K
Reported by: Trained Spotter

A mobile mesonet station measured a 62 mph wind gust. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.

Thunderstorm Wind in DICKINSON, IOWA
From 30-MAY-22 15:36:00 to 30-MAY-22 15:38:00 (CST-6)
Location: LAKE PARK
Magnitude: 52.00 EG
Crop damage: 85.00K
Reported by: Public

Wind-driven dime size hail caused some damage to vegetation.

Thunderstorm Wind in O'BRIEN, IOWA
From 30-MAY-22 17:52:00 to 30-MAY-22 17:54:00 (CST-6)
Location: SHELDON MUNI ARPT
Magnitude: 53.00 EG
Reported by: Public

A few moderate-sized tree limbs were downed by thunderstorm winds.

Hail in O'BRIEN, IOWA
From 30-MAY-22 15:15:00 to 30-MAY-22 15:18:00 (CST-6)
Location: HARTLEY
Magnitude: 1.25 
Reported by: Trained Spotter

Quarter to half-dollar size hail fell for a few minutes.

Thunderstorm Wind in DICKINSON, IOWA
From 30-MAY-22 15:37:00 to 30-MAY-22 15:39:00 (CST-6)
Location: LAKE PARK
Magnitude: 61.00 EG
Reported by: Emergency Manager

A few 6 to 8 inch diameter branches were downed by thunderstorm winds, as well as a  15 inch limb which blocked a city street.

Hail in DICKINSON, IOWA
From 30-MAY-22 15:43:00 to 30-MAY-22 15:44:00 (CST-6)
Location: FULLER FLD ARPT
Magnitude: 0.75 
Reported by: Fire Department/Rescue

Thunderstorm Wind in WOODBURY, IOWA
From 30-MAY-22 13:41:00 to 30-MAY-22 13:43:00 (CST-6)
Location: SIOUX CITY
Magnitude: 61.00 EG
Reported by: Public

A large tree was taken down by thunderstorm winds.

Thunderstorm Wind in DICKINSON, IOWA
From 30-MAY-22 15:37:00 to 30-MAY-22 15:39:00 (CST-6)
Location: LAKE PARK
Magnitude: 52.00 EG
Reported by: Public

Thunderstorm winds dislodged locked machine shed doors.

Hail in DICKINSON, IOWA
From 30-MAY-22 15:52:00 to 30-MAY-22 15:54:00 (CST-6)
Location: TRIBOJI BEACH
Magnitude: 1.75 
Reported by: COOP Observer

Hail in CHEROKEE, IOWA
From 30-MAY-22 14:55:00 to 30-MAY-22 14:57:00 (CST-6)
Location: MARCUS
Magnitude: 0.88 
Reported by: Social Media

Hail in DICKINSON, IOWA
From 30-MAY-22 15:35:00 to 30-MAY-22 15:37:00 (CST-6)
Location: LAKE PARK
Magnitude: 1.25 
Reported by: Public