Alert archive / South Dakota / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in South Dakota, 2014

461 severe thunderstorm warnings in 2014. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in 2014. Tap one for its archive.

Severe Thunderstorm Warnings: 461
Busiest month: June271 severe thunderstorm warnings
Busiest day: June 18, 201453 severe thunderstorm warnings

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

303 of 461 severe thunderstorm warnings covering South Dakota in 2014 had a qualifying storm report inside them; 442 of 538 hail, wind and damage reports fell inside a warning, on average 20 minutes after it went out.

South Dakota, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	461	303	34%	538	82%	20 min

Each office's whole area, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Sioux Falls, SD: severe thunderstorm warnings	216	124	43%	250	85%	17 min
NWS Aberdeen, SD: severe thunderstorm warnings	141	78	45%	133	75%	19 min
NWS Rapid City, SD: severe thunderstorm warnings	277	214	23%	385	86%	22 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Counties	Lasted
Apr 26, 10:55 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	65 min
Apr 27, 1:21 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	39 min
May 7, 2:05 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant	40 min
May 8, 12:22 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	38 min
May 8, 12:56 AM CDT	Severe Thunderstorm Warning	FSD	Moody	49 min
May 8, 3:08 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	37 min
May 8, 3:23 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	37 min
May 8, 12:26 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake	34 min
May 8, 3:25 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	35 min
May 8, 4:10 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	50 min
May 10, 4:19 PM CDT	Severe Thunderstorm Warning	ABR	Deuel	41 min
May 11, 7:29 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	31 min
May 11, 7:55 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	35 min
May 25, 5:57 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	33 min
May 26, 3:37 PM CDT	Severe Thunderstorm Warning	ABR	Hand	38 min
May 26, 6:49 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	41 min
May 26, 7:23 PM CDT	Severe Thunderstorm Warning	FSD	Douglas, Hutchinson	52 min
May 26, 7:24 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson	51 min
May 27, 2:05 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	40 min
May 27, 2:46 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	44 min
May 27, 3:23 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	67 min
May 27, 4:00 PM CDT	Severe Thunderstorm Warning	UNR	Custer	60 min
May 27, 4:41 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	64 min
May 27, 5:25 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	65 min
May 27, 5:31 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	59 min
May 27, 5:43 PM CDT	Severe Thunderstorm Warning	UNR	Meade	62 min
May 27, 6:29 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	61 min
May 27, 8:08 PM CDT	Severe Thunderstorm Warning	FSD	Aurora	37 min
May 29, 5:24 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	66 min
May 29, 7:51 PM CDT	Severe Thunderstorm Warning	UNR	Meade	39 min
May 29, 8:32 PM CDT	Severe Thunderstorm Warning	UNR	Meade	58 min
May 30, 2:43 PM CDT	Severe Thunderstorm Warning	FSD	Union	47 min
May 30, 3:07 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	23 min
May 30, 3:30 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds	30 min
May 30, 3:55 PM CDT	Severe Thunderstorm Warning	ABR	Faulk	50 min
May 31, 8:58 PM CDT	Severe Thunderstorm Warning	UNR	Custer	62 min
May 31, 9:45 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	45 min
Jun 1, 8:29 AM CDT	Severe Thunderstorm Warning	ABR	Deuel, Grant	31 min
Jun 1, 1:37 PM CDT	Severe Thunderstorm Warning	FSD	Yankton	38 min
Jun 1, 2:03 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner, Yankton	42 min
Jun 1, 2:47 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	43 min
Jun 1, 2:56 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	49 min
Jun 1, 2:58 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union	47 min
Jun 1, 3:17 PM CDT	Severe Thunderstorm Warning	FSD	Union	43 min
Jun 1, 3:29 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	46 min
Jun 3, 9:08 AM CDT	Severe Thunderstorm Warning	UNR	Jackson, Pennington	67 min
Jun 3, 9:58 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd	62 min
Jun 3, 10:16 AM CDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	38 min
Jun 3, 10:32 AM CDT	Severe Thunderstorm Warning	UNR	Todd	58 min
Jun 3, 3:47 PM CDT	Severe Thunderstorm Warning	UNR	Meade	46 min
Jun 3, 5:40 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	36 min
Jun 3, 6:07 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	53 min
Jun 3, 6:54 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	44 min
Jun 3, 8:00 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Hutchinson	34 min
Jun 4, 4:14 PM CDT	Severe Thunderstorm Warning	UNR	Harding	38 min
Jun 4, 4:21 PM CDT	Severe Thunderstorm Warning	UNR	Butte	54 min
Jun 4, 5:11 PM CDT	Severe Thunderstorm Warning	UNR	Butte	79 min
Jun 4, 5:15 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	30 min
Jun 4, 5:41 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	64 min
Jun 4, 5:59 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	61 min
Jun 4, 6:25 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	65 min
Jun 4, 6:51 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	54 min
Jun 4, 7:16 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	59 min
Jun 4, 7:26 PM CDT	Severe Thunderstorm Warning	ABR	Corson	37 min
Jun 4, 7:30 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	46 min
Jun 4, 7:34 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	40 min
Jun 5, 2:38 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	37 min
Jun 5, 3:32 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	43 min
Jun 5, 4:08 PM CDT	Severe Thunderstorm Warning	ABR	Deuel	22 min
Jun 5, 4:11 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	19 min
Jun 6, 12:48 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	57 min
Jun 6, 1:46 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	59 min
Jun 10, 7:37 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	53 min
Jun 10, 7:56 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	36 min
Jun 10, 9:14 PM CDT	Severe Thunderstorm Warning	UNR	Meade	61 min
Jun 10, 9:34 PM CDT	Severe Thunderstorm Warning	UNR	Butte	56 min
Jun 10, 9:50 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	55 min
Jun 10, 10:29 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette	61 min
Jun 11, 6:12 PM CDT	Severe Thunderstorm Warning	ABR	Marshall	33 min
Jun 13, 5:57 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	48 min
Jun 13, 6:19 PM CDT	Severe Thunderstorm Warning	UNR	Butte	38 min
Jun 13, 6:34 PM CDT	Severe Thunderstorm Warning	UNR	Butte	23 min
Jun 13, 7:12 PM CDT	Severe Thunderstorm Warning	UNR	Meade	33 min
Jun 13, 7:43 PM CDT	Severe Thunderstorm Warning	UNR	Meade	47 min
Jun 13, 8:06 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	54 min
Jun 13, 8:32 PM CDT	Severe Thunderstorm Warning	UNR		58 min
Jun 13, 8:37 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	53 min
Jun 13, 9:01 PM CDT	Severe Thunderstorm Warning	UNR	Perkins, Ziebach	46 min
Jun 13, 9:06 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	24 min
Jun 13, 9:11 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	64 min
Jun 13, 9:28 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	62 min
Jun 13, 9:46 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Potter, Stanley, Sully	59 min
Jun 13, 10:11 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Potter, Walworth	49 min
Jun 13, 10:24 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	66 min
Jun 13, 10:44 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Edmunds, Faulk, Hand, Hyde and 4 more	45 min
Jun 13, 11:07 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	53 min
Jun 13, 11:22 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	38 min
Jun 13, 11:41 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	64 min
Jun 13, 11:54 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	42 min
Jun 14, 12:40 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd	80 min
Jun 14, 12:54 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day	36 min
Jun 14, 3:45 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	27 min
Jun 14, 6:13 AM CDT	Severe Thunderstorm Warning	UNR	Custer	47 min
Jun 14, 6:59 AM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	61 min
Jun 14, 7:43 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	77 min
Jun 14, 8:44 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson	46 min
Jun 14, 11:32 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Haakon, Jackson, Mellette, Todd	58 min
Jun 14, 11:57 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman, Stanley	48 min
Jun 14, 12:42 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	48 min
Jun 14, 1:02 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	43 min
Jun 14, 2:57 PM CDT	Severe Thunderstorm Warning	ABR	Hand	48 min
Jun 14, 2:57 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	48 min
Jun 14, 6:39 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	51 min
Jun 14, 7:10 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	50 min
Jun 14, 8:21 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	54 min
Jun 14, 11:00 PM CDT	Severe Thunderstorm Warning	FSD	Union	45 min
Jun 16, 7:03 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	42 min
Jun 16, 7:16 AM CDT	Severe Thunderstorm Warning	UNR	Haakon	59 min
Jun 16, 7:33 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	42 min
Jun 16, 7:37 AM CDT	Severe Thunderstorm Warning	ABR	Lyman	53 min
Jun 16, 8:04 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Hyde, Lyman, Stanley	41 min
Jun 16, 8:05 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	55 min
Jun 16, 8:45 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Lyman, Stanley	45 min
Jun 16, 8:50 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	40 min
Jun 16, 10:04 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	41 min
Jun 16, 10:07 AM CDT	Severe Thunderstorm Warning	FSD	Union	38 min
Jun 16, 10:08 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Lyman	52 min
Jun 16, 10:21 AM CDT	Severe Thunderstorm Warning	FSD	Brule, Jerauld	54 min
Jun 16, 10:27 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde, Lyman	48 min
Jun 16, 10:51 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	39 min
Jun 16, 11:08 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Jerauld, Sanborn	52 min
Jun 16, 11:52 AM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	38 min
Jun 16, 12:17 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	43 min
Jun 16, 12:33 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Miner	42 min
Jun 16, 12:59 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	46 min
Jun 16, 1:11 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	49 min
Jun 16, 1:34 PM CDT	Severe Thunderstorm Warning	FSD	Moody	41 min
Jun 16, 1:52 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	38 min
Jun 16, 2:00 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Minnehaha, Turner	45 min
Jun 16, 2:17 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	43 min
Jun 16, 2:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	34 min
Jun 16, 3:15 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	45 min
Jun 16, 4:37 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	23 min
Jun 16, 5:45 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	45 min
Jun 16, 6:27 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner	48 min
Jun 16, 6:51 PM CDT	Severe Thunderstorm Warning	FSD	Clay	24 min
Jun 16, 6:56 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	49 min
Jun 16, 7:11 PM CDT	Severe Thunderstorm Warning	FSD	Douglas, Hutchinson	34 min
Jun 16, 7:15 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Union	45 min
Jun 16, 7:41 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Minnehaha, Moody	49 min
Jun 16, 7:43 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	62 min
Jun 16, 7:55 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	50 min
Jun 16, 7:59 PM CDT	Severe Thunderstorm Warning	FSD	Union	46 min
Jun 16, 8:13 PM CDT	Severe Thunderstorm Warning	UNR	Butte	62 min
Jun 16, 8:41 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	64 min
Jun 16, 9:06 PM CDT	Severe Thunderstorm Warning	UNR	Butte	54 min
Jun 16, 9:34 PM CDT	Severe Thunderstorm Warning	FSD	Union	41 min
Jun 16, 10:00 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	60 min
Jun 16, 10:15 PM CDT	Severe Thunderstorm Warning	FSD	Union	45 min
Jun 17, 12:40 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	50 min
Jun 17, 5:26 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	79 min
Jun 17, 7:14 PM CDT	Severe Thunderstorm Warning	UNR	Harding	61 min
Jun 17, 7:57 PM CDT	Severe Thunderstorm Warning	UNR	Butte	63 min
Jun 17, 8:10 PM CDT	Severe Thunderstorm Warning	UNR	Harding	65 min
Jun 17, 8:43 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	62 min
Jun 17, 8:53 PM CDT	Severe Thunderstorm Warning	UNR	Butte	97 min
Jun 17, 9:09 PM CDT	Severe Thunderstorm Warning	UNR	Butte	66 min
Jun 17, 9:33 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	57 min
Jun 17, 9:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	49 min
Jun 17, 9:44 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	46 min
Jun 17, 9:53 PM CDT	Severe Thunderstorm Warning	FSD	McCook	52 min
Jun 17, 10:01 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	74 min
Jun 17, 10:06 PM CDT	Severe Thunderstorm Warning	UNR	Custer	54 min
Jun 17, 10:18 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	57 min
Jun 17, 10:28 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	47 min
Jun 17, 10:30 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	45 min
Jun 17, 10:41 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Miner	49 min
Jun 17, 10:47 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	43 min
Jun 17, 11:07 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	38 min
Jun 17, 11:08 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	82 min
Jun 17, 11:22 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	53 min
Jun 17, 11:30 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	45 min
Jun 18, 12:03 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook, Turner	42 min
Jun 18, 12:07 AM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	53 min
Jun 18, 12:07 AM CDT	Severe Thunderstorm Warning	UNR	Perkins	53 min
Jun 18, 12:39 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook	51 min
Jun 18, 1:05 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	55 min
Jun 18, 1:11 AM CDT	Severe Thunderstorm Warning	FSD	McCook	49 min
Jun 18, 1:45 AM CDT	Severe Thunderstorm Warning	UNR	Ziebach	60 min
Jun 18, 1:58 AM CDT	Severe Thunderstorm Warning	ABR	Dewey	62 min
Jun 18, 2:26 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	64 min
Jun 18, 2:33 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	57 min
Jun 18, 3:27 AM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	48 min
Jun 18, 3:30 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hughes, Potter, Stanley, Sully	60 min
Jun 18, 4:15 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	60 min
Jun 18, 4:29 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hughes, Potter, Stanley, Sully	61 min
Jun 18, 5:17 AM CDT	Severe Thunderstorm Warning	UNR	Meade	58 min
Jun 18, 5:29 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Potter, Walworth	61 min
Jun 18, 5:30 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde, Sully	60 min
Jun 18, 6:39 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	66 min
Jun 18, 7:11 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	64 min
Jun 18, 7:49 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	41 min
Jun 18, 8:06 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	54 min
Jun 18, 8:58 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Stanley, Sully	62 min
Jun 18, 12:42 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	63 min
Jun 18, 1:07 PM CDT	Severe Thunderstorm Warning	UNR	Ziebach	38 min
Jun 18, 1:10 PM CDT	Severe Thunderstorm Warning	ABR	Corson	50 min
Jun 18, 1:28 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter	62 min
Jun 18, 1:43 PM CDT	Severe Thunderstorm Warning	UNR	Ziebach	62 min
Jun 18, 1:57 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	63 min
Jun 18, 2:30 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Walworth	60 min
Jun 18, 3:26 PM CDT	Severe Thunderstorm Warning	ABR	Corson	34 min
Jun 18, 4:40 PM CDT	Severe Thunderstorm Warning	ABR	Campbell	35 min
Jun 18, 5:55 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, McPherson, Walworth	50 min
Jun 18, 7:31 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	44 min
Jun 18, 8:15 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	45 min
Jun 18, 8:36 PM CDT	Severe Thunderstorm Warning	ABR	Spink	39 min
Jun 18, 8:57 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	63 min
Jun 18, 9:14 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Day, Spink	46 min
Jun 18, 9:20 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall, Spink	40 min
Jun 18, 9:57 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	48 min
Jun 19, 1:20 AM CDT	Severe Thunderstorm Warning	FSD	Clay	40 min
Jun 19, 3:28 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury, Miner, Sanborn	47 min
Jun 19, 4:06 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Day, Hamlin, Spink	39 min
Jun 19, 5:04 AM CDT	Severe Thunderstorm Warning	ABR	Day	41 min
Jun 19, 2:41 PM CDT	Severe Thunderstorm Warning	ABR	Stanley	49 min
Jun 19, 3:18 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	42 min
Jun 19, 4:54 PM CDT	Severe Thunderstorm Warning	ABR	Sully	36 min
Jun 19, 5:20 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde, Potter, Sully	40 min
Jun 19, 5:58 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Potter, Spink	47 min
Jun 19, 7:39 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day	51 min
Jun 19, 8:19 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Day, Grant	41 min
Jun 20, 3:05 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	40 min
Jun 20, 3:29 PM CDT	Severe Thunderstorm Warning	FSD	Union	46 min
Jun 20, 5:13 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	47 min
Jun 20, 5:46 PM CDT	Severe Thunderstorm Warning	FSD	Union	44 min
Jun 20, 6:07 PM CDT	Severe Thunderstorm Warning	FSD	Clay	38 min
Jun 21, 2:40 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson	50 min
Jun 21, 3:27 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	48 min
Jun 21, 3:43 PM CDT	Severe Thunderstorm Warning	UNR		62 min
Jun 21, 4:12 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	63 min
Jun 21, 4:21 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	39 min
Jun 21, 4:51 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, McPherson, Walworth	54 min
Jun 21, 4:57 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	63 min
Jun 21, 5:20 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson	40 min
Jun 21, 5:43 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds	47 min
Jun 21, 5:44 PM CDT	Severe Thunderstorm Warning	ABR	Stanley	46 min
Jun 21, 5:56 PM CDT	Severe Thunderstorm Warning	UNR	Haakon	41 min
Jun 21, 6:03 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	47 min
Jun 21, 6:17 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Faulk, Spink	43 min
Jun 21, 6:18 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Stanley, Sully	57 min
Jun 21, 6:23 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	67 min
Jun 21, 6:29 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	46 min
Jun 21, 6:45 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Faulk, Spink	45 min
Jun 21, 6:47 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Sully, Walworth	58 min
Jun 21, 6:50 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	22 min
Jun 21, 6:56 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Spink	49 min
Jun 21, 7:07 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	53 min
Jun 21, 7:17 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	58 min
Jun 21, 7:20 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	55 min
Jun 21, 7:31 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Walworth	44 min
Jun 21, 7:36 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	54 min
Jun 21, 7:38 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter, Walworth	52 min
Jun 21, 7:42 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	48 min
Jun 21, 7:43 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	62 min
Jun 21, 7:46 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Hand, Hyde, Potter, Sully and 1 more	44 min
Jun 21, 7:59 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Potter, Walworth	45 min
Jun 21, 8:10 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Lyman, Stanley and 1 more	25 min
Jun 21, 8:14 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	38 min
Jun 21, 8:16 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	59 min
Jun 21, 8:26 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Ziebach	38 min
Jun 21, 8:29 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	61 min
Jun 21, 8:40 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	32 min
Jun 21, 9:15 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Hamlin, Spink	60 min
Jun 21, 10:14 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Pennington	50 min
Jun 22, 2:02 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	43 min
Jun 25, 3:55 PM CDT	Severe Thunderstorm Warning	UNR	Meade	65 min
Jun 25, 4:33 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	42 min
Jun 25, 5:34 PM CDT	Severe Thunderstorm Warning	UNR	Haakon	56 min
Jun 25, 6:04 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	41 min
Jun 25, 6:09 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	51 min
Jun 25, 6:28 PM CDT	Severe Thunderstorm Warning	UNR	Haakon	26 min
Jun 25, 7:13 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	62 min
Jun 25, 7:31 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence	29 min
Jun 25, 7:42 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	48 min
Jun 25, 8:13 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Pennington	32 min
Jun 25, 9:12 PM CDT	Severe Thunderstorm Warning	UNR		25 min
Jun 26, 6:56 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	64 min
Jun 26, 8:13 PM CDT	Severe Thunderstorm Warning	UNR	Butte	39 min
Jun 26, 10:13 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	62 min
Jun 27, 4:24 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	52 min
Jun 27, 4:33 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	30 min
Jun 27, 5:01 PM CDT	Severe Thunderstorm Warning	UNR	Meade	59 min
Jun 27, 5:38 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	42 min
Jun 27, 5:52 PM CDT	Severe Thunderstorm Warning	UNR	Meade	53 min
Jun 27, 6:18 PM CDT	Severe Thunderstorm Warning	UNR	Custer	57 min
Jun 27, 6:34 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	47 min
Jun 27, 6:44 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	61 min
Jun 27, 6:47 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	58 min
Jun 27, 7:04 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	56 min
Jun 27, 8:37 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	68 min
Jun 27, 10:29 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	76 min
Jun 28, 5:36 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	24 min
Jun 29, 3:34 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	26 min
Jun 30, 1:31 AM CDT	Severe Thunderstorm Warning	FSD	Union	44 min
Jun 30, 10:32 AM CDT	Severe Thunderstorm Warning	FSD	Union	43 min
Jul 4, 7:35 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	55 min
Jul 4, 8:23 PM CDT	Severe Thunderstorm Warning	UNR	Custer	49 min
Jul 4, 9:05 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	55 min
Jul 5, 1:18 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Yankton	42 min
Jul 5, 1:35 AM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	40 min
Jul 5, 4:53 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	56 min
Jul 6, 3:19 AM CDT	Severe Thunderstorm Warning	ABR	Marshall, Roberts	41 min
Jul 6, 11:45 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	60 min
Jul 10, 2:57 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	48 min
Jul 10, 3:45 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	45 min
Jul 10, 4:37 PM CDT	Severe Thunderstorm Warning	UNR	Custer	30 min
Jul 10, 10:17 PM CDT	Severe Thunderstorm Warning	UNR	Todd	43 min
Jul 10, 10:48 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	42 min
Jul 10, 11:37 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule	38 min
Jul 11, 5:46 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Sully	44 min
Jul 11, 6:21 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Sully	39 min
Jul 12, 4:07 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	38 min
Jul 12, 4:43 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	46 min
Jul 18, 5:13 PM CDT	Severe Thunderstorm Warning	UNR	Custer	19 min
Jul 18, 11:39 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	51 min
Jul 19, 12:08 AM CDT	Severe Thunderstorm Warning	ABR	Roberts	52 min
Jul 19, 12:39 AM CDT	Severe Thunderstorm Warning	ABR	Roberts	51 min
Jul 19, 1:12 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	63 min
Jul 19, 7:02 AM CDT	Severe Thunderstorm Warning	FSD	Lake	28 min
Jul 19, 8:28 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	32 min
Jul 21, 7:14 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	31 min
Jul 21, 7:52 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	27 min
Jul 21, 8:17 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	29 min
Jul 21, 9:39 PM CDT	Severe Thunderstorm Warning	ABR	Day	33 min
Jul 21, 9:59 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	24 min
Jul 22, 6:29 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	46 min
Jul 22, 6:33 PM CDT	Severe Thunderstorm Warning	UNR	Harding	57 min
Jul 22, 6:36 PM CDT	Severe Thunderstorm Warning	UNR	Harding	54 min
Jul 22, 6:41 PM CDT	Severe Thunderstorm Warning	UNR	Butte	37 min
Jul 22, 7:09 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	51 min
Jul 22, 7:26 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	64 min
Jul 22, 7:40 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	65 min
Jul 22, 8:15 PM CDT	Severe Thunderstorm Warning	UNR	Custer	45 min
Jul 22, 8:17 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Perkins	58 min
Jul 22, 8:32 PM CDT	Severe Thunderstorm Warning	UNR	Custer	28 min
Jul 22, 8:48 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	42 min
Jul 22, 8:59 PM CDT	Severe Thunderstorm Warning	UNR	Custer	31 min
Jul 22, 9:00 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Perkins	23 min
Jul 22, 9:28 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	49 min
Jul 23, 1:03 AM CDT	Severe Thunderstorm Warning	UNR	Lawrence	27 min
Jul 23, 2:11 AM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	24 min
Jul 23, 2:39 AM CDT	Severe Thunderstorm Warning	UNR	Custer	36 min
Jul 23, 3:01 AM CDT	Severe Thunderstorm Warning	UNR	Fall River	44 min
Jul 23, 3:30 AM CDT	Severe Thunderstorm Warning	UNR	Fall River	51 min
Jul 24, 10:39 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	51 min
Jul 24, 12:17 PM CDT	Severe Thunderstorm Warning	ABR	Deuel, Hamlin	28 min
Jul 24, 12:32 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	43 min
Jul 24, 1:12 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Hamlin	48 min
Jul 24, 5:46 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	44 min
Jul 24, 7:04 PM CDT	Severe Thunderstorm Warning	UNR	Harding	56 min
Jul 24, 7:13 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	22 min
Jul 24, 7:41 PM CDT	Severe Thunderstorm Warning	UNR	Butte	22 min
Jul 24, 7:58 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	47 min
Jul 24, 8:33 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	57 min
Jul 24, 9:16 PM CDT	Severe Thunderstorm Warning	UNR	Perkins, Ziebach	59 min
Jul 24, 9:50 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	40 min
Jul 24, 11:22 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Sully	29 min
Jul 26, 7:46 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	31 min
Jul 26, 9:18 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Davison, Douglas, Hutchinson	42 min
Jul 26, 9:51 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Bon Homme, Charles Mix, Davison, Douglas, Hanson and 2 more	39 min
Jul 26, 10:27 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Clay, Hutchinson, Turner, Yankton	33 min
Jul 26, 10:55 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Clay, Yankton	50 min
Aug 1, 9:41 PM CDT	Severe Thunderstorm Warning	ABR	Corson	29 min
Aug 2, 7:47 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Douglas	43 min
Aug 2, 7:50 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	40 min
Aug 2, 8:25 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	35 min
Aug 2, 8:47 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	43 min
Aug 2, 9:30 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	45 min
Aug 3, 5:51 PM CDT	Severe Thunderstorm Warning	ABR	Brown	39 min
Aug 4, 9:39 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson	66 min
Aug 4, 10:44 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Walworth	61 min
Aug 5, 6:25 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	35 min
Aug 5, 6:58 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	62 min
Aug 7, 7:08 PM CDT	Severe Thunderstorm Warning	UNR	Jackson	29 min
Aug 7, 7:30 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	60 min
Aug 7, 7:35 PM CDT	Severe Thunderstorm Warning	UNR	Jackson	36 min
Aug 7, 8:06 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	40 min
Aug 7, 8:24 PM CDT	Severe Thunderstorm Warning	UNR	Bennett	22 min
Aug 8, 2:30 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	60 min
Aug 8, 3:20 PM CDT	Severe Thunderstorm Warning	UNR	Todd	44 min
Aug 9, 3:20 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	55 min
Aug 9, 4:12 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	42 min
Aug 9, 9:14 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	45 min
Aug 14, 10:07 AM CDT	Severe Thunderstorm Warning	ABR	Hand, Spink	23 min
Aug 14, 3:10 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	31 min
Aug 17, 2:30 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	37 min
Aug 17, 2:46 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	59 min
Aug 17, 3:48 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	57 min
Aug 17, 4:03 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	57 min
Aug 17, 4:15 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	60 min
Aug 17, 4:29 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	61 min
Aug 17, 4:41 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	45 min
Aug 17, 4:57 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	63 min
Aug 17, 5:06 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	54 min
Aug 17, 5:15 PM CDT	Severe Thunderstorm Warning	UNR	Custer	60 min
Aug 17, 5:23 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	18 min
Aug 17, 5:40 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	65 min
Aug 17, 5:48 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Meade, Perkins	57 min
Aug 17, 5:48 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	42 min
Aug 17, 6:20 PM CDT	Severe Thunderstorm Warning	UNR		55 min
Aug 17, 6:40 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	65 min
Aug 17, 7:02 PM CDT	Severe Thunderstorm Warning	UNR		41 min
Aug 20, 12:40 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	50 min
Aug 20, 3:56 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule	49 min
Aug 20, 4:21 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	39 min
Aug 20, 5:03 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	57 min
Aug 20, 5:53 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	52 min
Aug 20, 6:09 PM CDT	Severe Thunderstorm Warning	ABR	Corson	51 min
Aug 20, 6:35 PM CDT	Severe Thunderstorm Warning	ABR	Corson	40 min
Aug 20, 7:19 PM CDT	Severe Thunderstorm Warning	ABR	Corson	41 min
Aug 20, 8:15 PM CDT	Severe Thunderstorm Warning	ABR	Corson	45 min
Aug 20, 9:02 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	43 min
Aug 20, 9:11 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Walworth	49 min
Aug 20, 9:42 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Edmunds, McPherson, Potter and 1 more	63 min
Aug 20, 10:35 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	40 min
Aug 20, 10:46 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Walworth	23 min
Aug 21, 12:09 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	51 min
Aug 21, 12:47 AM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	31 min
Aug 21, 9:02 PM CDT	Severe Thunderstorm Warning	UNR	Harding	38 min
Aug 23, 9:11 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Sanborn	34 min
Aug 23, 9:39 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Hanson, Kingsbury, Miner, Sanborn	51 min
Aug 23, 10:22 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	38 min
Aug 23, 11:48 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Moody	27 min
Aug 24, 3:14 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	46 min
Aug 26, 7:47 PM CDT	Severe Thunderstorm Warning	UNR		58 min
Aug 26, 8:36 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	54 min
Aug 26, 9:17 PM CDT	Severe Thunderstorm Warning	UNR		58 min
Aug 30, 6:35 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Lawrence, Meade, Pennington	55 min
Aug 30, 7:21 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	54 min
Aug 30, 7:42 PM CDT	Severe Thunderstorm Warning	UNR	Harding	63 min
Aug 31, 5:26 PM CDT	Severe Thunderstorm Warning	FSD	Union	34 min
Aug 31, 5:49 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	44 min
Sep 1, 4:58 PM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	47 min
Sep 7, 7:37 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	18 min
Sep 7, 8:05 PM CDT	Severe Thunderstorm Warning	UNR	Mellette	28 min
Sep 7, 8:08 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman, Stanley	22 min
Sep 7, 8:44 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	33 min
Sep 7, 10:21 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	39 min
Sep 19, 2:10 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	31 min
Sep 19, 8:54 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	36 min
Sep 19, 9:23 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	37 min
Sep 19, 9:28 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	32 min
Sep 19, 9:44 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	31 min
Sep 19, 9:48 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	6 min
Sep 19, 10:37 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	53 min
Sep 19, 11:01 PM CDT	Severe Thunderstorm Warning	FSD	Union	29 min
Sep 20, 1:55 PM CDT	Severe Thunderstorm Warning	ABR	Marshall, Roberts	50 min
Sep 20, 2:06 PM CDT	Severe Thunderstorm Warning	ABR	Marshall, Roberts	39 min
Sep 20, 2:43 PM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	30 min
Sep 30, 5:09 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	52 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

25 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2013 2015

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.