Severe thunderstorms developed in Montana during the evening of July 4th then moved into northwestern South Dakota during the early morning hours of July 5th. The storms intensified around daybreak on July 5th, as they encountered a more favorable environment for severe storms. The storms started as supercells and then evolved into a derecho, with embedded supercells as they moved through Hand and Hyde counties. The significant severe storms tracked southeast across central South Dakota, into southeastern South Dakota, and eventually into northern Iowa while producing winds up to 91 mph and hail to the size of softballs in central South Dakota. The storms caused widespread damage to trees, grain bins, crops, and vehicles. Some of the highest wind gusts include 91 mph 4 miles north of Agar, 87 mph 1 mile north of Ree Heights, 84 mph 1 mile south-southwest of Timber Lake, and 77 mph 12 miles east-southeast of Sunshine Bible Academy. Hail, 4 inches in diameter, was reported in Promise and 2 miles north of Timber Lake.

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 12:00:00 to 05-JUL-22 12:00:00 (CST-6)
Location: MILLER
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Emergency Manager reported several trees uprooted and significant tree damage in Miller.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 05-JUL-22 07:40:00 to 05-JUL-22 07:40:00 (MST-7)
Location: TIMBER LAKE ARPT
Magnitude: 73.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 05-JUL-22 08:31:00 to 05-JUL-22 08:31:00 (MST-7)
Location: RIDGEVIEW JEWETT ARP
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SULLY, SOUTH DAKOTA
From 05-JUL-22 09:55:00 to 05-JUL-22 09:55:00 (CST-6)
Location: GALLAGHER
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 05-JUL-22 10:09:00 to 05-JUL-22 10:09:00 (CST-6)
Location: GORMAN
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in STANLEY, SOUTH DAKOTA
From 05-JUL-22 09:15:00 to 05-JUL-22 09:15:00 (MST-7)
Location: FT PIERRE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A National Weather Service employee reported an estimated wind gust of 60 mph.

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 05-JUL-22 10:21:00 to 05-JUL-22 10:21:00 (CST-6)
Location: GORMAN
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in POTTER, SOUTH DAKOTA
From 05-JUL-22 10:26:00 to 05-JUL-22 10:26:00 (CST-6)
Location: GORMAN
Magnitude: 79.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SULLY, SOUTH DAKOTA
From 05-JUL-22 10:35:00 to 05-JUL-22 10:35:00 (CST-6)
Location: ONIDA
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 05-JUL-22 10:53:00 to 05-JUL-22 10:53:00 (CST-6)
Location: (PIR)PIERRE ARPT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 05-JUL-22 10:57:00 to 05-JUL-22 10:57:00 (CST-6)
Location: MC CLURE
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 05-JUL-22 11:05:00 to 05-JUL-22 11:05:00 (CST-6)
Location: BLUNT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HUGHES, SOUTH DAKOTA
From 05-JUL-22 11:10:00 to 05-JUL-22 11:10:00 (CST-6)
Location: (PIR)PIERRE ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:15:00 to 05-JUL-22 11:15:00 (CST-6)
Location: HIGHMORE ARPT
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:16:00 to 05-JUL-22 11:16:00 (CST-6)
Location: HIGHMORE ARPT
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 11:33:00 to 05-JUL-22 11:33:00 (CST-6)
Location: REE HGTS
Magnitude: 73.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 11:38:00 to 05-JUL-22 11:38:00 (CST-6)
Location: REE HGTS
Magnitude: 76.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:36:00 to 05-JUL-22 11:36:00 (CST-6)
Location: HIGHMORE ARPT
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:44:00 to 05-JUL-22 11:44:00 (CST-6)
Location: STEPHAN
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BUFFALO, SOUTH DAKOTA
From 05-JUL-22 11:51:00 to 05-JUL-22 11:51:00 (CST-6)
Location: FT THOMPSON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 11:51:00 to 05-JUL-22 11:51:00 (CST-6)
Location: POLO
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 11:42:00 to 05-JUL-22 11:42:00 (CST-6)
Location: REE HGTS
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 11:53:00 to 05-JUL-22 11:53:00 (CST-6)
Location: REE HGTS
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:51:00 to 05-JUL-22 11:51:00 (CST-6)
Location: HIGHMORE ARPT
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:54:00 to 05-JUL-22 11:54:00 (CST-6)
Location: STEPHAN
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 12:24:00 to 05-JUL-22 12:24:00 (CST-6)
Location: STEPHAN
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BUFFALO, SOUTH DAKOTA
From 05-JUL-22 12:26:00 to 05-JUL-22 12:26:00 (CST-6)
Location: FT THOMPSON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in BUFFALO, SOUTH DAKOTA
From 05-JUL-22 12:41:00 to 05-JUL-22 12:41:00 (CST-6)
Location: FT THOMPSON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in DEWEY, SOUTH DAKOTA
From 05-JUL-22 07:37:00 to 05-JUL-22 07:37:00 (MST-7)
Location: TIMBER LAKE
Magnitude: 4.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DEWEY, SOUTH DAKOTA
From 05-JUL-22 07:55:00 to 05-JUL-22 07:55:00 (MST-7)
Location: GLENCROSS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 12:06:00 to 05-JUL-22 12:06:00 (CST-6)
Location: POLO
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 12:17:00 to 05-JUL-22 12:17:00 (CST-6)
Location: DANFORTH
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in SPINK, SOUTH DAKOTA
From 05-JUL-22 12:59:00 to 05-JUL-22 12:59:00 (CST-6)
Location: BLOOMFIELD
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in DEWEY, SOUTH DAKOTA
From 05-JUL-22 08:13:00 to 05-JUL-22 08:13:00 (MST-7)
Location: PROMISE
Magnitude: 4.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 05-JUL-22 07:05:00 to 05-JUL-22 07:05:00 (MST-7)
Location: BLACK HORSE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported many trees uprooted.

Thunderstorm Wind in LYMAN, SOUTH DAKOTA
From 05-JUL-22 11:55:00 to 05-JUL-22 11:55:00 (CST-6)
Location: OACOMA
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in DEWEY, SOUTH DAKOTA
From 05-JUL-22 07:20:00 to 05-JUL-22 07:20:00 (MST-7)
Location: FIRESTEEL
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated 70 to 80 mph winds. The wind and large hail broke skylights on the house. In addition, a fence was damaged, along with tree branches down.

Thunderstorm Wind in CORSON, SOUTH DAKOTA
From 05-JUL-22 07:10:00 to 05-JUL-22 07:10:00 (MST-7)
Location: BLACK HORSE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported extensive damage to a large outdoor storage building due to high winds.

Thunderstorm Wind in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:15:00 to 05-JUL-22 11:15:00 (CST-6)
Location: HIGHMORE
Magnitude: 70.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a roof blown off of a home.

Hail in HYDE, SOUTH DAKOTA
From 05-JUL-22 11:10:00 to 05-JUL-22 11:10:00 (CST-6)
Location: HIGHMORE ARPT
Magnitude: 1.75 
Reported by: Trained Spotter

A trained spotter estimated 60 mph wind gusts.

Thunderstorm Wind in HAND, SOUTH DAKOTA
From 05-JUL-22 11:50:00 to 05-JUL-22 11:50:00 (CST-6)
Location: MILLER
Magnitude: 59.00 ES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public reported estimated 60 mph winds.

Thunderstorm Wind in DEWEY, SOUTH DAKOTA
From 05-JUL-22 07:15:00 to 05-JUL-22 07:15:00 (MST-7)
Location: ISABEL
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported extensive damage north of Isabel. There was damage to trees, some uprooted, and damaged siding and broken windows on a house and vehicles. In addition, a machine shed and grain bins were destroyed. Some areas had complete crop loss.