Alert archive / South Dakota / Tornado Watches in 2026

Tornado Watch 406

June 27, 2026Cherry County, Sheridan County, Nebraska; 18 counties in North Dakota; 24 counties in South Dakota

The Storm Prediction Center issued this tornado watch at Jun 27, 2026, 3:05 PM MDT for Cherry County, Sheridan County, Nebraska; 18 counties in North Dakota; 24 counties in South Dakota. It was in force for 11 hr.

The area

The outline as issued.

The facts

Issued: Jun 27, 2026, 3:05 PM MDT (21:05 UTC)
Expired: Jun 28, 2026, 2:00 AM MDT
In force: 11 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3.5 in
Strongest gust expected: 80 kt

All 44 counties

Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Williams County, ND, Cherry County, NE, Sheridan County, NE, Bennett County, SD, Butte County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Harding County, SD, Hughes County, SD, Jackson County, SD, Jones County, SD, Lawrence County, SD, Lyman County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 147 km from the middle of the area, began a volume at 21:07 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 50%
One or more EF2 to EF5 tornadoes: 30%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 50%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 50%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

59 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 27, 4:26 PM MDT	Severe Thunderstorm Warning	UNR	Harding	49 min
Jun 27, 4:31 PM MDT	Severe Thunderstorm Warning	UNR	Butte, Harding	44 min
Jun 27, 4:43 PM MDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	47 min
Jun 27, 4:58 PM MDT	Severe Thunderstorm Warning	UNR	Harding	34 min
Jun 27, 5:11 PM MDT	Severe Thunderstorm Warning	UNR	Harding	49 min
Jun 27, 5:12 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	48 min
Jun 27, 5:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Bowman	60 min
Jun 27, 5:22 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	38 min
Jun 27, 5:31 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Haakon, Meade, Oglala Lakota, Pennington	59 min
Jun 27, 5:56 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Harding	14 min
Jun 27, 5:57 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota, Pennington	48 min
Jun 27, 6:04 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	41 min
Jun 27, 6:07 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Adams, Bowman, Slope	68 min
Jun 27, 6:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Harding	52 min
Jun 27, 6:09 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Billings, Dunn, Stark	66 min
Jun 27, 6:13 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington	37 min
Jun 27, 6:33 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Adams, Bowman, Slope	42 min
Jun 27, 6:34 PM MDT	Tornado Warning	BIS	Billings	41 min
Jun 27, 6:38 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Sheridan	67 min
Jun 27, 6:40 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Billings, Golden Valley, McKenzie	65 min
Jun 27, 6:41 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Pennington	34 min
Jun 27, 6:42 PM MDT	Tornado Warning	UNR	Harding, Perkins	33 min
Jun 27, 6:47 PM MDT	Severe Thunderstorm Warning	UNR	Fall River, Jackson, Oglala Lakota, Pennington	43 min
Jun 27, 6:48 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Adams, Bowman, Hettinger, Slope, Stark	57 min
Jun 27, 6:54 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Harding, Perkins	51 min
Jun 27, 7:00 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Oglala Lakota	32 min
Jun 27, 7:02 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Billings, Dunn, Golden Valley, McKenzie, Stark	58 min
Jun 27, 7:10 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Haakon, Jackson, Meade, Mellette, Pennington, Ziebach	65 min
Jun 27, 7:14 PM MDT	Tornado Warning	BIS	Adams	46 min
Jun 27, 7:29 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	46 min
Jun 27, 7:30 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota	46 min
Jun 27, 7:38 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	52 min
Jun 27, 7:42 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	63 min
Jun 27, 7:43 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Adams, Grant, Hettinger, Morton, Sioux, Stark	62 min
Jun 27, 7:45 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Divide, McKenzie, Williams	60 min
Jun 27, 7:48 PM MDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	42 min
Jun 27, 7:50 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	40 min
Jun 27, 7:54 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Adams, Grant, Hettinger	51 min
Jun 27, 7:55 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BIS	Billings, Dunn, McKenzie, McLean, Mercer, Morton and 4 more	65 min
Jun 27, 8:04 PM MDT	Severe Thunderstorm Warning	ABR	Jones	56 min
Jun 27, 8:10 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	50 min
Jun 27, 8:12 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Cherry, Sheridan	48 min
Jun 27, 8:15 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette, Ziebach	30 min
Jun 27, 8:21 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	39 min
Jun 27, 8:35 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	McLean, Mercer, Morton, Mountrail, Oliver, Ward	55 min
Jun 27, 8:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Burke, Divide, McKenzie, Mountrail, Ward, Williams	64 min
Jun 27, 8:43 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BIS	Adams, Grant, Hettinger, Morton, Sioux	62 min
Jun 27, 8:56 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	49 min
Jun 27, 9:11 PM MDT	Severe Thunderstorm Warning	ABR	Corson	23 min
Jun 27, 9:27 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, McLean, Morton, Oliver, Sioux	63 min
Jun 27, 9:29 PM MDT	Severe Thunderstorm Warning	BIS	Bottineau, McHenry, McLean, Mercer, Oliver, Renville and 1 more	61 min
Jun 27, 9:32 PM MDT	Severe Thunderstorm Warning	BIS	Bottineau, Burke, Divide, Mountrail, Renville, Ward	58 min
Jun 27, 9:33 PM MDT	Severe Thunderstorm Warning Destructive damage threat	LBF	Cherry	42 min
Jun 27, 9:38 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Bennett, Mellette, Todd	67 min
Jun 27, 9:44 PM MDT	Tornado Warning	BIS	Burleigh, Morton, Oliver	31 min
Jun 27, 10:10 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Cherry, Keya Paha	50 min
Jun 27, 10:14 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	46 min
Jun 27, 11:04 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	41 min
Jun 27, 11:30 PM MDT	Severe Thunderstorm Warning Considerable damage threat	UNR	Tripp	30 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 26, 7:13 PM MDT	Mesoscale Discussion	SPC	Sheridan	2 hr
Jun 27, 3:14 PM MDT	Severe Thunderstorm Watch	SPC	Arthur, Box Butte, Chase, Cheyenne, Dawes, Deuel and 13 more	7 hr
Jun 27, 1:19 PM MDT	Mesoscale Discussion	SPC	Adams, Billings, Bowman, Burke, Divide, Dunn and 13 more	2 hr
Jun 27, 4:47 PM MDT	Mesoscale Discussion	SPC	Adams, Billings, Grant, Hettinger, Slope, Stark	118 min
Jun 27, 5:15 PM MDT	Mesoscale Discussion	SPC	Golden Valley	2 hr
Jun 27, 1:02 PM MDT	Severe Thunderstorm Watch	SPC	Custer, Fall River	7 hr

Nearby

Tornado Watches in South Dakota, 2026 Tornado Watches in North Dakota, 2026 Tornado Watches in Nebraska, 2026 Every tornado watch in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.