Alert archive / South Dakota / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in South Dakota, 2017

544 severe thunderstorm warnings in 2017. 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 2017. Tap one for its archive.

Severe Thunderstorm Warnings: 544
Busiest month: July174 severe thunderstorm warnings
Busiest day: June 13, 201750 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.

396 of 544 severe thunderstorm warnings covering South Dakota in 2017 had a qualifying storm report inside them; 629 of 723 hail, wind and damage reports fell inside a warning, on average 22 minutes after it went out.

South Dakota, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	544	396	27%	723	87%	22 min

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Sioux Falls, SD: severe thunderstorm warnings	270	214	21%	354	87%	19 min
NWS Aberdeen, SD: severe thunderstorm warnings	201	138	31%	306	81%	20 min
NWS Rapid City, SD: severe thunderstorm warnings	183	121	34%	257	88%	27 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 15, 6:29 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	46 min
Apr 15, 7:00 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	45 min
Apr 17, 9:09 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	81 min
Apr 17, 9:40 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	65 min
Apr 17, 10:37 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	53 min
May 7, 3:46 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence	29 min
May 13, 7:13 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	47 min
May 15, 12:32 AM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	58 min
May 15, 1:34 AM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	56 min
May 15, 8:08 AM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Davison, Douglas, Hanson, Hutchinson	37 min
May 15, 8:37 AM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Hutchinson, McCook	23 min
May 15, 8:45 AM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Turner	30 min
May 15, 10:54 PM CDT	Severe Thunderstorm Warning	UNR	Meade	66 min
May 15, 11:29 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	46 min
May 16, 1:30 AM CDT	Severe Thunderstorm Warning	UNR	Meade	28 min
May 16, 1:47 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	46 min
May 16, 2:42 AM CDT	Severe Thunderstorm Warning	FSD	Brookings	33 min
May 16, 3:02 AM CDT	Severe Thunderstorm Warning	ABR	Deuel, Grant	28 min
May 16, 5:00 AM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall	30 min
May 16, 6:55 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	29 min
May 17, 2:34 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	26 min
May 28, 4:26 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Edmunds, Spink	34 min
May 28, 4:54 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Spink	36 min
May 28, 5:25 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Hamlin, Spink	50 min
May 28, 6:22 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Moody	38 min
May 28, 6:53 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	21 min
Jun 5, 3:37 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	53 min
Jun 5, 3:55 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence	50 min
Jun 5, 5:10 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	35 min
Jun 5, 5:46 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	29 min
Jun 5, 5:52 PM CDT	Severe Thunderstorm Warning	UNR	Harding	38 min
Jun 5, 6:01 PM CDT	Severe Thunderstorm Warning	UNR	Custer	44 min
Jun 5, 9:19 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	56 min
Jun 7, 2:07 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	53 min
Jun 7, 2:58 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	62 min
Jun 7, 5:01 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	44 min
Jun 7, 5:27 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	21 min
Jun 7, 5:34 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	56 min
Jun 7, 5:40 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	46 min
Jun 7, 6:14 PM CDT	Severe Thunderstorm Warning	UNR	Custer	34 min
Jun 10, 9:58 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	50 min
Jun 10, 10:24 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	66 min
Jun 10, 11:51 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	54 min
Jun 11, 1:26 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman, Stanley	31 min
Jun 11, 1:30 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Lyman, Stanley	45 min
Jun 11, 1:40 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Lyman	50 min
Jun 11, 2:05 AM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	55 min
Jun 11, 2:15 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Lyman, Stanley	45 min
Jun 11, 2:26 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	49 min
Jun 11, 2:46 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Hyde, Lyman	44 min
Jun 11, 3:03 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	27 min
Jun 11, 3:07 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Spink	38 min
Jun 11, 3:13 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	47 min
Jun 11, 3:25 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	50 min
Jun 11, 3:28 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde, Lyman	62 min
Jun 11, 3:58 AM CDT	Severe Thunderstorm Warning	ABR	Deuel, Grant	19 min
Jun 11, 4:05 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Davison, Jerauld, Kingsbury, Miner and 1 more	40 min
Jun 11, 4:35 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Davison, Hanson, Jerauld, Kingsbury and 3 more	40 min
Jun 11, 4:37 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Grant	27 min
Jun 11, 4:52 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Hamlin, Spink	38 min
Jun 11, 5:04 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Hanson, Kingsbury, Lake, McCook, Miner and 1 more	41 min
Jun 11, 5:23 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Grant, Hamlin	52 min
Jun 11, 5:38 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Moody	37 min
Jun 11, 6:02 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Roberts	43 min
Jun 11, 6:07 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Moody	38 min
Jun 12, 9:16 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Turner, Yankton	29 min
Jun 12, 9:52 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Lincoln, Turner, Yankton	19 min
Jun 12, 10:02 AM CDT	Severe Thunderstorm Warning	FSD	Lake, Moody	28 min
Jun 12, 10:06 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Yankton	39 min
Jun 12, 10:25 AM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	35 min
Jun 12, 10:35 AM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, Turner, Yankton	40 min
Jun 12, 10:49 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	26 min
Jun 12, 11:09 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	36 min
Jun 12, 12:08 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	38 min
Jun 12, 7:23 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	82 min
Jun 12, 8:43 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	62 min
Jun 12, 9:31 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Oglala Lakota	44 min
Jun 12, 9:43 PM CDT	Severe Thunderstorm Warning	UNR	Oglala Lakota, Pennington	34 min
Jun 12, 10:13 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota, Pennington	62 min
Jun 12, 10:53 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	67 min
Jun 12, 10:59 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Haakon, Jackson, Mellette, Todd	76 min
Jun 12, 11:41 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	49 min
Jun 12, 11:51 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota, Pennington	54 min
Jun 13, 12:14 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	50 min
Jun 13, 12:21 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Stanley	39 min
Jun 13, 12:43 AM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota, Pennington	77 min
Jun 13, 12:53 AM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	24 min
Jun 13, 1:22 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	38 min
Jun 13, 2:02 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hughes, Hyde, Potter, Sully	43 min
Jun 13, 2:39 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Faulk, Hand, Hyde, Spink	51 min
Jun 13, 3:36 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Marshall	39 min
Jun 13, 5:04 AM CDT	Severe Thunderstorm Warning	ABR	Day, Grant, Marshall, Roberts	24 min
Jun 13, 7:07 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Hamlin	25 min
Jun 13, 3:26 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	34 min
Jun 13, 3:28 PM CDT	Severe Thunderstorm Warning	ABR	Hand	47 min
Jun 13, 3:56 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	34 min
Jun 13, 4:08 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	52 min
Jun 13, 4:19 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	41 min
Jun 13, 4:25 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix	35 min
Jun 13, 4:27 PM CDT	Severe Thunderstorm Warning	FSD	Brule	33 min
Jun 13, 4:29 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	46 min
Jun 13, 4:46 PM CDT	Severe Thunderstorm Warning	ABR	Potter, Walworth	44 min
Jun 13, 4:51 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	39 min
Jun 13, 5:06 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hughes, Hyde, Potter, Sully	39 min
Jun 13, 5:13 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	32 min
Jun 13, 5:16 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Brule, Jerauld, Sanborn	44 min
Jun 13, 5:17 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	43 min
Jun 13, 5:20 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Douglas	25 min
Jun 13, 5:28 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Potter, Walworth	47 min
Jun 13, 5:35 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	25 min
Jun 13, 5:40 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Gregory	35 min
Jun 13, 5:43 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Hand, Hyde	47 min
Jun 13, 5:44 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Spink	46 min
Jun 13, 5:45 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Douglas	30 min
Jun 13, 5:51 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Charles Mix, Davison, Douglas	24 min
Jun 13, 6:18 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury, Sanborn	42 min
Jun 13, 6:25 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	50 min
Jun 13, 6:28 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Douglas, Hanson, Hutchinson	32 min
Jun 13, 6:31 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson	44 min
Jun 13, 6:43 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Spink	47 min
Jun 13, 6:49 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Charles Mix, Davison, Douglas, Hanson, Hutchinson	26 min
Jun 13, 6:56 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	34 min
Jun 13, 6:59 PM CDT	Severe Thunderstorm Warning	ABR	Brown	46 min
Jun 13, 6:59 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson, Lake, McCook, Miner, Sanborn and 1 more	31 min
Jun 13, 7:10 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Codington, Day, Grant, Hamlin and 3 more	65 min
Jun 13, 7:12 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hanson, Hutchinson, Turner	33 min
Jun 13, 7:16 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Grant, Hamlin	59 min
Jun 13, 7:22 PM CDT	Severe Thunderstorm Warning	ABR	Marshall	23 min
Jun 13, 7:24 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	21 min
Jun 13, 7:32 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hanson, Hutchinson, McCook, Turner, Yankton	28 min
Jun 13, 7:38 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	52 min
Jun 13, 7:53 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Minnehaha, Turner	37 min
Jun 13, 8:03 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Roberts	42 min
Jun 13, 8:12 PM CDT	Severe Thunderstorm Warning	ABR	Marshall, Roberts	33 min
Jun 13, 8:16 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	29 min
Jun 13, 8:23 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha, Turner	37 min
Jun 13, 8:38 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	22 min
Jun 13, 8:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Moody, Turner	34 min
Jun 13, 8:43 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner	47 min
Jun 13, 9:10 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Union	50 min
Jun 13, 9:13 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Minnehaha	47 min
Jun 13, 9:16 PM CDT	Severe Thunderstorm Warning	FSD	Union	44 min
Jun 13, 9:18 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	42 min
Jun 18, 7:21 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day	16 min
Jun 18, 7:40 PM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	18 min
Jun 21, 2:53 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Lyman	52 min
Jun 21, 3:22 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Jerauld	38 min
Jun 22, 3:02 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	43 min
Jun 22, 3:08 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	67 min
Jun 22, 3:30 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury	45 min
Jun 22, 3:35 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Hamlin	25 min
Jun 22, 3:45 AM CDT	Severe Thunderstorm Warning	FSD	Brookings	45 min
Jun 22, 3:48 AM CDT	Severe Thunderstorm Warning	ABR	Deuel	12 min
Jun 22, 3:53 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Lyman	52 min
Jun 22, 4:34 AM CDT	Severe Thunderstorm Warning	FSD	Jerauld	41 min
Jun 22, 4:38 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	52 min
Jun 22, 5:02 AM CDT	Severe Thunderstorm Warning	FSD	Jerauld, Miner, Sanborn	43 min
Jun 22, 5:10 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley	50 min
Jun 22, 5:44 AM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	35 min
Jun 22, 6:08 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Hyde, Sully	52 min
Jun 22, 6:57 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	33 min
Jun 27, 5:47 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota, Pennington	58 min
Jun 27, 6:26 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota	79 min
Jun 27, 6:34 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	56 min
Jun 27, 6:41 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Jackson, Oglala Lakota, Pennington	64 min
Jun 27, 7:21 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Meade, Mellette, Pennington	54 min
Jun 27, 7:37 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	53 min
Jun 27, 8:29 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hughes, Stanley, Sully	46 min
Jun 27, 10:24 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Davison, Douglas, Hutchinson	51 min
Jun 27, 11:00 PM CDT	Severe Thunderstorm Warning	FSD	Turner, Yankton	45 min
Jun 27, 11:02 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	43 min
Jun 27, 11:22 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	53 min
Jun 27, 11:34 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Hutchinson	41 min
Jun 27, 11:47 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	43 min
Jun 28, 3:18 PM CDT	Severe Thunderstorm Warning	UNR	Custer	42 min
Jun 28, 5:46 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	59 min
Jun 28, 6:36 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	54 min
Jun 28, 8:00 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	29 min
Jun 29, 3:22 PM CDT	Severe Thunderstorm Warning	FSD	Union	53 min
Jun 29, 3:41 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	34 min
Jun 29, 3:47 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Douglas	28 min
Jun 29, 3:48 PM CDT	Severe Thunderstorm Warning	FSD	Union	42 min
Jun 29, 3:57 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	33 min
Jun 29, 4:06 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	24 min
Jun 29, 4:15 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson	30 min
Jun 29, 4:16 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	29 min
Jun 29, 4:26 PM CDT	Severe Thunderstorm Warning	FSD	Union	49 min
Jun 29, 4:40 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson	35 min
Jun 29, 5:01 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Yankton	29 min
Jun 29, 5:23 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Turner, Yankton	37 min
Jun 29, 5:39 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Turner, Yankton	36 min
Jun 29, 6:03 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union, Yankton	27 min
Jun 29, 6:27 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	33 min
Jul 3, 7:33 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner	42 min
Jul 4, 2:59 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	28 min
Jul 4, 4:34 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	56 min
Jul 4, 5:26 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins, Ziebach	49 min
Jul 4, 11:17 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand	28 min
Jul 5, 6:16 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	44 min
Jul 5, 6:19 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	41 min
Jul 5, 6:32 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Spink	43 min
Jul 5, 6:42 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	48 min
Jul 5, 6:57 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day	26 min
Jul 5, 7:08 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	52 min
Jul 5, 7:54 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	51 min
Jul 5, 7:54 PM CDT	Severe Thunderstorm Warning	ABR	Spink	51 min
Jul 5, 8:02 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	21 min
Jul 5, 8:20 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hughes, Stanley, Sully	40 min
Jul 5, 8:26 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds	19 min
Jul 5, 8:31 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	29 min
Jul 5, 8:32 PM CDT	Severe Thunderstorm Warning	ABR	Spink	26 min
Jul 5, 8:45 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds	30 min
Jul 5, 8:57 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Lyman, Stanley	48 min
Jul 5, 9:01 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall	30 min
Jul 5, 9:14 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	46 min
Jul 5, 9:27 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hughes, Hyde, Jones, Lyman and 1 more	78 min
Jul 5, 9:36 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	69 min
Jul 5, 10:16 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Gregory, Jerauld	44 min
Jul 5, 10:25 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Jerauld, Sanborn	35 min
Jul 5, 11:03 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson, Sanborn	42 min
Jul 7, 8:13 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	62 min
Jul 7, 9:13 PM CDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	47 min
Jul 9, 4:29 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix	31 min
Jul 9, 5:50 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	25 min
Jul 11, 3:51 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	38 min
Jul 11, 4:49 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Oglala Lakota, Pennington	56 min
Jul 11, 5:44 PM CDT	Severe Thunderstorm Warning	UNR	Jackson, Oglala Lakota, Pennington	46 min
Jul 11, 6:19 PM CDT	Severe Thunderstorm Warning	ABR	Day, Roberts	41 min
Jul 11, 6:31 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Hamlin	59 min
Jul 11, 6:45 PM CDT	Severe Thunderstorm Warning	ABR	Codington	45 min
Jul 11, 6:58 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	47 min
Jul 11, 7:00 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	45 min
Jul 11, 7:24 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant	51 min
Jul 11, 7:25 PM CDT	Severe Thunderstorm Warning	ABR	Deuel, Hamlin	50 min
Jul 11, 7:33 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	42 min
Jul 11, 7:51 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	39 min
Jul 11, 8:07 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	68 min
Jul 11, 8:08 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	37 min
Jul 11, 8:22 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	27 min
Jul 11, 8:35 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison	40 min
Jul 11, 8:36 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, McCook, Miner, Sanborn	24 min
Jul 11, 8:56 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	34 min
Jul 11, 9:08 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Hutchinson	37 min
Jul 11, 9:25 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson, McCook	35 min
Jul 11, 9:29 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	31 min
Jul 11, 9:36 PM CDT	Severe Thunderstorm Warning	ABR	Deuel, Hamlin	24 min
Jul 11, 9:44 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Hamlin	46 min
Jul 11, 9:46 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	29 min
Jul 11, 9:49 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Hamlin	41 min
Jul 11, 9:57 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	33 min
Jul 11, 10:00 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	30 min
Jul 11, 10:02 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	43 min
Jul 11, 10:27 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	33 min
Jul 11, 10:28 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Hamlin	47 min
Jul 11, 10:29 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	31 min
Jul 11, 10:45 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Lawrence, Meade, Pennington	60 min
Jul 11, 10:48 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	27 min
Jul 11, 11:10 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Moody	35 min
Jul 17, 2:42 PM CDT	Severe Thunderstorm Warning	UNR	Custer	63 min
Jul 17, 5:01 PM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	37 min
Jul 17, 6:12 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Hamlin	18 min
Jul 17, 6:19 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Lyman	56 min
Jul 17, 6:28 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	32 min
Jul 17, 6:50 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	40 min
Jul 17, 7:05 PM CDT	Severe Thunderstorm Warning	ABR	Clark	25 min
Jul 17, 7:12 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Lyman	63 min
Jul 17, 7:14 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Jerauld	46 min
Jul 17, 7:16 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	44 min
Jul 17, 7:23 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	56 min
Jul 17, 7:34 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	49 min
Jul 17, 7:44 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury	46 min
Jul 17, 7:48 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	57 min
Jul 17, 7:55 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury	35 min
Jul 17, 8:10 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury, Lake, Miner	35 min
Jul 17, 8:21 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	24 min
Jul 17, 8:40 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	50 min
Jul 17, 9:22 PM CDT	Severe Thunderstorm Warning	UNR	Oglala Lakota	68 min
Jul 17, 9:40 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	35 min
Jul 17, 9:49 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	41 min
Jul 17, 11:49 PM CDT	Severe Thunderstorm Warning	UNR	Todd	37 min
Jul 18, 3:26 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Edmunds, McPherson, Walworth	64 min
Jul 18, 6:17 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	38 min
Jul 18, 6:59 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding	61 min
Jul 18, 7:55 PM CDT	Severe Thunderstorm Warning	UNR	Butte	65 min
Jul 18, 8:37 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	53 min
Jul 18, 9:24 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	66 min
Jul 18, 10:21 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	25 min
Jul 19, 7:29 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	46 min
Jul 19, 8:18 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Walworth	57 min
Jul 19, 8:56 AM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Edmunds, Walworth	49 min
Jul 19, 9:17 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Edmunds, Potter, Walworth	43 min
Jul 19, 9:37 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Walworth	38 min
Jul 19, 9:46 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hyde, Potter, Sully	44 min
Jul 19, 10:09 AM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk, Potter	51 min
Jul 19, 10:24 AM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde, Spink	66 min
Jul 19, 10:53 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Sanborn	52 min
Jul 19, 11:45 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury, Miner, Sanborn	45 min
Jul 19, 12:18 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	27 min
Jul 19, 1:15 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	45 min
Jul 19, 1:44 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	31 min
Jul 19, 3:30 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	45 min
Jul 19, 4:07 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	53 min
Jul 19, 4:45 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Gregory	45 min
Jul 19, 5:08 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	38 min
Jul 20, 6:01 PM CDT	Severe Thunderstorm Warning	UNR	Harding	74 min
Jul 20, 6:48 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Perkins	72 min
Jul 20, 7:56 PM CDT	Severe Thunderstorm Warning	ABR	Corson	49 min
Jul 20, 8:32 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	43 min
Jul 20, 9:13 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	62 min
Jul 20, 9:45 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Potter, Walworth	60 min
Jul 20, 10:41 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Dewey, Edmunds, McPherson, Potter, Sully and 1 more	64 min
Jul 21, 5:52 AM CDT	Severe Thunderstorm Warning	FSD	Kingsbury	38 min
Jul 21, 6:06 AM CDT	Severe Thunderstorm Warning	FSD	Jerauld	24 min
Jul 21, 6:30 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Jerauld, Sanborn	15 min
Jul 21, 6:16 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	44 min
Jul 21, 6:56 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	51 min
Jul 21, 7:31 PM CDT	Severe Thunderstorm Warning	ABR	Corson	44 min
Jul 21, 7:49 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds	41 min
Jul 21, 8:09 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hyde, Potter, Sully	51 min
Jul 21, 8:14 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	28 min
Jul 21, 8:25 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Faulk	50 min
Jul 21, 8:52 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand	38 min
Jul 21, 9:21 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, Walworth	11 min
Jul 21, 9:48 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	42 min
Jul 21, 9:58 PM CDT	Severe Thunderstorm Warning	ABR	Potter	18 min
Jul 21, 10:21 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Spink	39 min
Jul 21, 10:27 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Spink	48 min
Jul 21, 10:42 PM CDT	Severe Thunderstorm Warning	ABR	Spink	48 min
Jul 21, 10:44 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	46 min
Jul 21, 10:45 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	45 min
Jul 21, 11:11 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Spink	64 min
Jul 21, 11:13 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Spink	32 min
Jul 21, 11:17 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury	43 min
Jul 21, 11:18 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	42 min
Jul 21, 11:27 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Hamlin, Spink	63 min
Jul 21, 11:43 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	47 min
Jul 21, 11:47 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Hyde	28 min
Jul 22, 12:28 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Hamlin	32 min
Jul 22, 1:27 AM CDT	Severe Thunderstorm Warning	FSD	Hanson, Lake, McCook, Miner	48 min
Jul 22, 2:24 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	36 min
Jul 22, 3:26 AM CDT	Severe Thunderstorm Warning	FSD	Union	26 min
Jul 24, 3:21 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	39 min
Jul 24, 6:41 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	51 min
Jul 24, 7:50 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	55 min
Jul 25, 12:19 AM CDT	Severe Thunderstorm Warning	ABR	Grant	41 min
Jul 25, 4:09 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	51 min
Jul 25, 4:16 PM CDT	Severe Thunderstorm Warning	ABR	Deuel	29 min
Jul 25, 4:34 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson, Jerauld, Miner, Sanborn	41 min
Jul 25, 4:52 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Moody	38 min
Jul 25, 4:58 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Lake, Miner, Sanborn	47 min
Jul 25, 5:21 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Davison, Jerauld, Sanborn	39 min
Jul 25, 5:31 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury, Lake, Miner, Sanborn	44 min
Jul 25, 6:19 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	56 min
Jul 25, 6:23 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	55 min
Jul 25, 7:03 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Tripp	57 min
Jul 25, 7:13 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	32 min
Jul 25, 7:59 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Lyman	31 min
Jul 25, 8:21 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson, Jerauld, Sanborn	39 min
Jul 25, 8:51 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	39 min
Jul 27, 5:50 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	34 min
Jul 28, 3:20 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	33 min
Jul 29, 6:34 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	41 min
Jul 30, 2:17 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	58 min
Jul 30, 3:41 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	24 min
Jul 30, 5:08 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	40 min
Jul 31, 4:25 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	65 min
Jul 31, 6:14 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	44 min
Jul 31, 8:48 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	57 min
Aug 1, 10:07 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Sully	24 min
Aug 1, 12:36 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Tripp	37 min
Aug 1, 1:49 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix	41 min
Aug 1, 3:26 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson	34 min
Aug 1, 3:59 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	31 min
Aug 1, 4:16 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	29 min
Aug 1, 4:30 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	30 min
Aug 2, 5:26 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	64 min
Aug 5, 6:34 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	56 min
Aug 5, 7:24 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	66 min
Aug 6, 4:45 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd, Tripp	60 min
Aug 6, 5:42 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	30 min
Aug 9, 6:06 PM CDT	Severe Thunderstorm Warning	ABR	Day, Grant, Roberts	19 min
Aug 9, 6:28 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant	47 min
Aug 11, 6:58 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	62 min
Aug 12, 2:06 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	39 min
Aug 12, 2:16 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Tripp	59 min
Aug 12, 2:18 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	57 min
Aug 12, 2:31 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	44 min
Aug 12, 2:44 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman	46 min
Aug 12, 3:01 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	44 min
Aug 12, 3:08 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Tripp	67 min
Aug 12, 3:28 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	47 min
Aug 12, 3:35 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman, Stanley	19 min
Aug 12, 3:45 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	45 min
Aug 12, 4:05 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule	40 min
Aug 12, 4:12 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	63 min
Aug 12, 4:31 PM CDT	Severe Thunderstorm Warning	UNR	Harding, Perkins	59 min
Aug 12, 5:10 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	62 min
Aug 12, 5:27 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	49 min
Aug 12, 5:53 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	37 min
Aug 12, 6:41 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	34 min
Aug 12, 7:14 PM CDT	Severe Thunderstorm Warning	ABR	Corson	46 min
Aug 12, 7:31 PM CDT	Severe Thunderstorm Warning	UNR	Perkins	59 min
Aug 12, 7:54 PM CDT	Severe Thunderstorm Warning	ABR	Corson	51 min
Aug 12, 8:32 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Sully	43 min
Aug 12, 9:12 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Sully	63 min
Aug 13, 11:29 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Hamlin	32 min
Aug 13, 3:16 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas	44 min
Aug 13, 3:54 PM CDT	Severe Thunderstorm Warning	FSD	Charles Mix, Douglas, Hutchinson	51 min
Aug 13, 4:20 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Douglas, Hutchinson	25 min
Aug 13, 4:24 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Hutchinson, McCook, Turner	36 min
Aug 13, 5:15 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix	30 min
Aug 13, 5:42 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	33 min
Aug 13, 5:52 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	23 min
Aug 13, 6:39 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	21 min
Aug 13, 6:44 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	31 min
Aug 13, 7:14 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha, Turner	31 min
Aug 14, 4:44 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	61 min
Aug 14, 5:44 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	39 min
Aug 14, 6:01 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade, Pennington	59 min
Aug 14, 6:46 PM CDT	Severe Thunderstorm Warning	UNR	Oglala Lakota, Pennington	45 min
Aug 14, 7:00 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	60 min
Aug 14, 7:24 PM CDT	Severe Thunderstorm Warning	UNR	Oglala Lakota	66 min
Aug 14, 7:37 PM CDT	Severe Thunderstorm Warning	UNR	Butte	53 min
Aug 14, 7:50 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	41 min
Aug 14, 8:26 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence	49 min
Aug 14, 8:37 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Oglala Lakota	68 min
Aug 14, 9:16 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade	33 min
Aug 14, 9:50 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Oglala Lakota	55 min
Aug 15, 8:06 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd	54 min
Aug 15, 8:55 PM CDT	Severe Thunderstorm Warning	UNR	Todd	47 min
Aug 18, 2:16 PM CDT	Severe Thunderstorm Warning	ABR	Grant	44 min
Aug 18, 2:59 PM CDT	Severe Thunderstorm Warning	ABR	Grant	46 min
Aug 18, 3:51 PM CDT	Severe Thunderstorm Warning	ABR	Deuel, Grant	24 min
Aug 18, 4:24 PM CDT	Severe Thunderstorm Warning	ABR	Deuel	51 min
Aug 19, 9:30 PM CDT	Severe Thunderstorm Warning	FSD	Union	29 min
Aug 19, 9:54 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	36 min
Aug 21, 4:34 AM CDT	Severe Thunderstorm Warning	UNR	Ziebach	56 min
Aug 21, 5:16 AM CDT	Severe Thunderstorm Warning	UNR	Ziebach	44 min
Aug 21, 5:41 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	64 min
Aug 21, 6:04 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	41 min
Aug 21, 6:36 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hughes, Potter, Stanley, Sully	34 min
Aug 21, 6:37 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	53 min
Aug 21, 7:45 AM CDT	Severe Thunderstorm Warning	ABR	Codington, Grant	20 min
Aug 21, 7:54 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Lyman, Stanley, Sully	66 min
Aug 21, 8:38 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	52 min
Aug 21, 8:55 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman, Stanley	65 min
Aug 21, 9:07 AM CDT	Severe Thunderstorm Warning	ABR	Jones	38 min
Aug 21, 9:19 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	41 min
Aug 21, 9:42 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	33 min
Aug 21, 9:42 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Tripp	63 min
Aug 21, 9:50 AM CDT	Severe Thunderstorm Warning	ABR	Lyman	40 min
Aug 21, 10:16 AM CDT	Severe Thunderstorm Warning	ABR	Lyman	30 min
Aug 21, 10:29 AM CDT	Severe Thunderstorm Warning	ABR	Lyman	46 min
Aug 21, 10:39 AM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	51 min
Aug 21, 10:42 AM CDT	Severe Thunderstorm Warning	ABR	Lyman	33 min
Aug 21, 11:06 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, McCook, Minnehaha, Turner	39 min
Aug 21, 11:23 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Douglas, Gregory	52 min
Aug 21, 12:05 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Charles Mix, Davison, Douglas, Gregory, Hutchinson	40 min
Aug 21, 12:33 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Davison, Douglas, Hanson, Hutchinson, Yankton	42 min
Aug 21, 12:48 PM CDT	Severe Thunderstorm Warning	FSD	Turner	27 min
Aug 21, 1:06 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Clay, Hutchinson, Turner, Yankton	39 min
Aug 21, 1:40 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union, Yankton	50 min
Aug 25, 10:33 AM CDT	Severe Thunderstorm Warning	UNR	Ziebach	57 min
Aug 25, 1:40 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	50 min
Aug 25, 3:14 PM CDT	Severe Thunderstorm Warning	ABR	Potter, Sully	46 min
Aug 25, 3:22 PM CDT	Severe Thunderstorm Warning	UNR	Pennington	38 min
Aug 25, 3:23 PM CDT	Severe Thunderstorm Warning	ABR	Faulk	52 min
Aug 25, 4:12 PM CDT	Severe Thunderstorm Warning	UNR	Todd	63 min
Aug 25, 4:36 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	54 min
Aug 25, 5:12 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	63 min
Aug 25, 5:23 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day	52 min
Aug 25, 5:32 PM CDT	Severe Thunderstorm Warning	FSD	Brule	58 min
Aug 25, 5:42 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	63 min
Aug 25, 5:43 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	25 min
Aug 25, 5:47 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	43 min
Aug 25, 6:03 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Day, Deuel, Grant	42 min
Aug 25, 6:36 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury, Miner, Sanborn	39 min
Aug 25, 6:48 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Jerauld, Sanborn	57 min
Aug 25, 7:00 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	45 min
Aug 25, 7:28 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner, Minnehaha	47 min
Aug 26, 2:08 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	67 min
Aug 26, 3:02 PM CDT	Severe Thunderstorm Warning	UNR	Custer	58 min
Aug 26, 3:47 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	58 min
Aug 26, 4:14 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	46 min
Aug 26, 4:27 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	63 min
Aug 26, 4:28 PM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	50 min
Aug 26, 4:53 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson	67 min
Aug 26, 4:57 PM CDT	Severe Thunderstorm Warning	UNR	Meade	63 min
Aug 26, 5:05 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	25 min
Aug 26, 5:27 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	24 min
Aug 26, 5:30 PM CDT	Severe Thunderstorm Warning	UNR	Meade	23 min
Aug 26, 5:45 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Mellette	60 min
Aug 26, 6:37 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Mellette, Todd	53 min
Aug 26, 6:38 PM CDT	Severe Thunderstorm Warning	UNR	Meade	52 min
Aug 26, 7:00 PM CDT	Severe Thunderstorm Warning	ABR	Jones	17 min
Aug 26, 7:10 PM CDT	Severe Thunderstorm Warning	UNR	Meade	50 min
Aug 26, 7:29 PM CDT	Severe Thunderstorm Warning	UNR	Meade	61 min
Aug 26, 8:08 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Ziebach	33 min
Aug 26, 8:42 PM CDT	Severe Thunderstorm Warning	ABR	Jones	48 min
Aug 26, 10:33 PM CDT	Severe Thunderstorm Warning	UNR	Todd, Tripp	42 min
Aug 26, 11:21 PM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd	54 min
Sep 8, 6:57 PM CDT	Severe Thunderstorm Warning	UNR	Meade	48 min
Sep 8, 7:44 PM CDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	46 min
Sep 8, 10:25 PM CDT	Severe Thunderstorm Warning	UNR	Jackson, Oglala Lakota, Pennington	65 min
Sep 15, 6:30 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	45 min
Sep 15, 6:59 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Miner	46 min
Sep 19, 1:28 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	47 min
Sep 19, 2:43 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	17 min
Sep 19, 6:27 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	33 min
Sep 19, 6:40 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	50 min
Sep 19, 6:55 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	34 min
Sep 19, 7:29 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Marshall	46 min
Sep 19, 7:46 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Spink	44 min
Sep 19, 7:59 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	31 min
Sep 19, 8:12 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Marshall	33 min
Sep 19, 8:23 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Marshall, Spink	37 min
Sep 19, 8:38 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Jerauld, Sanborn	52 min
Sep 19, 8:41 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Marshall	34 min
Sep 19, 8:53 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule	52 min
Sep 19, 8:57 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	48 min
Sep 19, 9:21 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Kingsbury, Miner, Sanborn	39 min
Sep 19, 9:41 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson, Sanborn	49 min
Sep 19, 9:55 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Kingsbury, Miner, Sanborn	46 min
Sep 19, 10:00 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Douglas, Hanson, Hutchinson	45 min
Sep 19, 10:15 PM CDT	Severe Thunderstorm Warning	FSD	Kingsbury, Lake, Miner, Sanborn	45 min
Sep 19, 10:39 PM CDT	Severe Thunderstorm Warning	FSD	Hanson, Kingsbury, Lake, McCook, Miner, Minnehaha and 1 more	36 min
Sep 19, 10:49 PM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	41 min
Sep 19, 11:08 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Lake, McCook, Minnehaha, Moody	52 min
Sep 19, 11:26 PM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	19 min
Sep 19, 11:29 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha	46 min
Sep 19, 11:47 PM CDT	Severe Thunderstorm Warning	FSD	Brookings	43 min
Sep 22, 12:48 AM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall	57 min
Sep 22, 12:51 AM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	54 min
Sep 22, 12:55 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, Spink	65 min
Sep 22, 1:02 AM CDT	Severe Thunderstorm Warning	ABR	Roberts	50 min
Sep 22, 1:45 AM CDT	Severe Thunderstorm Warning	ABR	Day, Marshall, Roberts	60 min
Sep 22, 5:00 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	30 min
Sep 22, 5:48 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Minnehaha	27 min
Sep 23, 12:27 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	33 min
Sep 23, 12:41 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury, Lake, Moody	34 min
Sep 23, 1:16 PM CDT	Severe Thunderstorm Warning	FSD	Lake	29 min
Sep 23, 1:45 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Lake, Moody	45 min
Oct 6, 6:51 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	24 min
Oct 6, 7:14 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Union	46 min

By county

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

26 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 2016 2018

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.