Weather alerts in South Dakota, May 2021

138 weather alerts in May 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in May 2021. Tap one for its archive.

Alerts: 138
Warnings: 31
Watches: 6
Advisories: 11
Busiest day: May 24, 202126 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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
May 1, 2:50 AM CDT	Red Flag Warning	ABR	Brown, Campbell, Corson, Day, Dewey, Edmunds and 6 more	17 hr
May 1, 3:09 AM CDT	Red Flag Warning	FSD	Union	16 hr
May 1, 8:58 PM CDT	Special Weather Statement	UNR	Fall River	47 min
May 3, 2:28 PM CDT	Frost Advisory	FSD	Aurora, Beadle, Brookings, Brule, Davison, Douglas and 8 more	18 hr
May 5, 1:23 PM CDT	Special Weather Statement	UNR	Pennington	37 min
May 5, 2:24 PM CDT	Frost Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 16 more	18 hr
May 5, 2:52 PM CDT	Fire Weather Watch	ABR	Brown, Campbell, Clark, Codington, Corson, Day and 12 more	13 hr
May 6, 3:27 AM CDT	Red Flag Warning	ABR	Brown, Campbell, Clark, Codington, Day, Deuel and 9 more	17 hr
May 6, 3:02 PM CDT	Frost Advisory	FSD	Beadle, Brookings, Jerauld, Kingsbury, Lake, Miner and 2 more	17 hr
May 8, 2:42 AM CDT	Special Weather Statement	UNR	Bennett	33 min
May 8, 3:14 AM CDT	Special Weather Statement	UNR	Bennett	46 min
May 9, 3:22 PM CDT	Frost Advisory	FSD	Aurora, Beadle, Brookings, Brule, Davison, Douglas and 5 more	17 hr
May 10, 3:12 PM CDT	Frost Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	17 hr
May 12, 2:58 PM CDT	Special Weather Statement	UNR	Custer	47 min
May 12, 3:34 PM CDT	Special Weather Statement	UNR	Pennington	41 min
May 12, 4:25 PM CDT	Special Weather Statement	UNR	Custer	35 min
May 12, 5:04 PM CDT	Special Weather Statement	UNR	Oglala Lakota	41 min
May 13, 2:38 PM CDT	Mesoscale Discussion	SPC	Fall River	3 hr
May 13, 4:41 PM CDT	Special Weather Statement	LBF	Bennett	49 min
May 13, 5:19 PM CDT	Special Weather Statement	UNR	Fall River	41 min
May 13, 5:56 PM CDT	Special Weather Statement	UNR	Fall River	19 min
May 13, 9:16 PM CDT	Special Weather Statement	ABR	Marshall	44 min
May 13, 9:54 PM CDT	Special Weather Statement	ABR	Spink	51 min
May 13, 10:43 PM CDT	Special Weather Statement	ABR	Clark	47 min
May 14, 4:58 PM CDT	Mesoscale Discussion	SPC	Brookings, Clay, Codington, Davison, Deuel, Douglas and 15 more	92 min
May 19, 1:59 AM CDT	Dense Fog Advisory	FSD	Brookings, Clay, Kingsbury, Lake, Lincoln, McCook and 5 more	7 hr
May 19, 1:02 PM CDT	Special Weather Statement	UNR	Lawrence	43 min
May 19, 6:40 PM CDT	Special Weather Statement	UNR	Ziebach	35 min
May 19, 8:07 PM CDT	Special Weather Statement	UNR	Meade	38 min
May 19, 8:17 PM CDT	Severe Thunderstorm Warning	UNR	Meade	33 min
May 20, 1:58 PM CDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Lawrence	3 hr
May 20, 4:52 PM CDT	Special Weather Statement	UNR		23 min
May 20, 7:23 PM CDT	Special Weather Statement	UNR	Custer	52 min
May 20, 8:07 PM CDT	Special Weather Statement	UNR	Custer	38 min
May 20, 8:43 PM CDT	Special Weather Statement	UNR	Pennington	47 min
May 20, 9:21 PM CDT	Special Weather Statement	UNR	Fall River	39 min
May 20, 9:24 PM CDT	Special Weather Statement	UNR	Butte	51 min
May 20, 11:34 PM CDT	Special Weather Statement	UNR	Meade	41 min
May 20, 11:38 PM CDT	Special Weather Statement	UNR	Pennington	37 min
May 20, 11:58 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington	47 min
May 21, 12:41 AM CDT	Special Weather Statement	CYS	Fall River	19 min
May 21, 12:41 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Pennington, Ziebach	49 min
May 21, 12:52 AM CDT	Special Weather Statement	UNR	Fall River	38 min
May 21, 1:27 AM CDT	Severe Thunderstorm Warning	UNR	Haakon, Ziebach	41 min
May 21, 1:32 AM CDT	Special Weather Statement	UNR	Fall River	43 min
May 21, 1:53 AM CDT	Special Weather Statement	ABR	Stanley	52 min
May 21, 2:28 AM CDT	Special Weather Statement	ABR	Sully	32 min
May 21, 2:33 AM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	42 min
May 21, 3:06 AM CDT	Special Weather Statement	UNR	Custer	39 min
May 21, 3:48 AM CDT	Special Weather Statement	UNR	Custer	42 min
May 21, 4:24 AM CDT	Special Weather Statement	UNR	Pennington	66 min
May 21, 4:52 AM CDT	Special Weather Statement	UNR	Tripp	38 min
May 21, 3:54 PM CDT	Mesoscale Discussion	SPC	Bennett	3 hr
May 21, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Oglala Lakota, Todd	6 hr
May 21, 6:44 PM CDT	Severe Thunderstorm Warning	UNR	Oglala Lakota	27 min
May 21, 7:24 PM CDT	Special Weather Statement	UNR	Oglala Lakota	36 min
May 21, 7:28 PM CDT	Special Weather Statement	UNR	Oglala Lakota	32 min
May 21, 7:30 PM CDT	Mesoscale Discussion	SPC	Bennett, Oglala Lakota, Todd	90 min
May 21, 7:53 PM CDT	Special Weather Statement	UNR	Oglala Lakota	52 min
May 21, 8:43 PM CDT	Special Weather Statement	UNR	Jackson	47 min
May 21, 9:26 PM CDT	Special Weather Statement	UNR	Haakon	49 min
May 21, 9:42 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Jackson, Pennington	31 min
May 21, 9:44 PM CDT	Special Weather Statement	UNR	Oglala Lakota	46 min
May 21, 10:04 PM CDT	Mesoscale Discussion	SPC	Fall River, Haakon, Jackson, Oglala Lakota	86 min
May 21, 10:30 PM CDT	Special Weather Statement	UNR	Oglala Lakota	45 min
May 21, 10:43 PM CDT	Special Weather Statement	UNR	Haakon	47 min
May 22, 12:36 AM CDT	Special Weather Statement	UNR	Haakon	54 min
May 23, 4:20 AM CDT	Special Weather Statement	UNR	Oglala Lakota	40 min
May 23, 5:57 AM CDT	Special Weather Statement	UNR	Meade	33 min
May 23, 6:23 AM CDT	Special Weather Statement	UNR	Jackson	37 min
May 23, 11:53 AM CDT	Mesoscale Discussion	SPC	Fall River	2 hr
May 23, 1:58 PM CDT	Mesoscale Discussion	SPC	Haakon, Meade, Oglala Lakota, Pennington, Perkins, Ziebach	2 hr
May 23, 2:40 PM CDT	Special Weather Statement	UNR	Fall River	35 min
May 23, 2:50 PM CDT	Tornado Watch	SPC	Bennett, Butte, Corson, Custer, Dewey, Fall River and 9 more	7 hr
May 23, 2:57 PM CDT	Mesoscale Discussion	SPC	Fall River	2 hr
May 23, 3:00 PM CDT	Special Weather Statement	UNR	Custer	30 min
May 23, 3:02 PM CDT	Special Weather Statement	UNR	Meade	28 min
May 23, 3:16 PM CDT	Special Weather Statement	UNR	Pennington	29 min
May 23, 3:45 PM CDT	Tornado Warning	UNR	Meade	30 min
May 23, 4:13 PM CDT	Tornado Warning	UNR	Meade, Perkins	47 min
May 23, 4:34 PM CDT	Special Weather Statement	UNR	Fall River	26 min
May 23, 4:53 PM CDT	Severe Thunderstorm Warning	UNR	Custer	37 min
May 23, 4:58 PM CDT	Tornado Warning	UNR	Perkins	47 min
May 23, 4:59 PM CDT	Tornado Warning	UNR	Custer	31 min
May 23, 5:14 PM CDT	Tornado Warning	UNR	Custer, Pennington	13 min
May 23, 5:26 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Lawrence, Meade, Pennington	49 min
May 23, 5:26 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Pennington	33 min
May 23, 6:04 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Meade, Pennington	30 min
May 23, 6:25 PM CDT	Mesoscale Discussion	SPC	Bennett, Butte, Corson, Custer, Dewey, Fall River and 9 more	95 min
May 23, 6:35 PM CDT	Special Weather Statement	UNR	Perkins	40 min
May 23, 6:53 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	67 min
May 23, 7:45 PM CDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Ziebach	58 min
May 23, 7:53 PM CDT	Mesoscale Discussion	SPC	Bennett	67 min
May 23, 7:59 PM CDT	Severe Thunderstorm Warning	ABR	Dewey	46 min
May 23, 8:12 PM CDT	Severe Thunderstorm Watch	SPC	Mellette, Todd, Tripp	5 hr
May 23, 8:22 PM CDT	Mesoscale Discussion	SPC	Campbell, Corson, Dewey, Potter, Stanley, Sully and 1 more	53 min
May 23, 8:42 PM CDT	Special Weather Statement	UNR	Todd	48 min
May 23, 9:18 PM CDT	Special Weather Statement	UNR	Todd	42 min
May 23, 9:37 PM CDT	Special Weather Statement	ABR	Hughes	23 min
May 23, 9:49 PM CDT	Special Weather Statement	UNR	Tripp	26 min
May 23, 9:56 PM CDT	Mesoscale Discussion	SPC	Tripp	2 hr
May 23, 9:58 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	47 min
May 23, 10:04 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hughes, Lyman	41 min
May 23, 10:14 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Faulk, Hand, Hughes, Hyde, Lyman and 2 more	46 min
May 23, 10:17 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	43 min
May 23, 10:46 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Faulk, Hand, Hyde, Potter, Sully	44 min
May 23, 11:06 PM CDT	Special Weather Statement	ABR	Edmunds, Walworth	24 min
May 23, 11:23 PM CDT	Special Weather Statement	ABR	Spink	37 min
May 23, 11:30 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, Faulk, McPherson, Walworth	45 min
May 24, 12:03 AM CDT	Special Weather Statement	ABR	Brown	42 min
May 24, 12:11 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Day, McPherson, Marshall, Spink	49 min
May 24, 12:14 AM CDT	Special Weather Statement	ABR	Clark, Day	46 min
May 24, 12:55 AM CDT	Special Weather Statement	ABR	Marshall	35 min
May 24, 1:00 AM CDT	Special Weather Statement	ABR	Codington, Deuel, Grant, Hamlin, Roberts	60 min
May 24, 1:17 AM CDT	Special Weather Statement	ABR	Roberts	43 min
May 24, 2:31 PM CDT	Wind Advisory	UNR	Butte, Harding, Meade, Perkins, Ziebach	28 hr
May 24, 2:59 PM CDT	Wind Advisory	ABR	Brown, Campbell, Corson, Day, Dewey, Edmunds and 4 more	28 hr
May 24, 7:32 PM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	43 min
May 26, 11:47 AM CDT	Special Weather Statement	UNR	Butte	28 min
May 26, 2:27 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Fall River, Oglala Lakota	8 hr
May 26, 3:45 PM CDT	Special Weather Statement	UNR	Fall River	30 min
May 26, 4:20 PM CDT	Special Weather Statement	UNR	Fall River	25 min
May 26, 5:37 PM CDT	Special Weather Statement	UNR	Butte	38 min
May 26, 5:40 PM CDT	Special Weather Statement	UNR	Custer	35 min
May 26, 6:01 PM CDT	Special Weather Statement	UNR	Lawrence	29 min
May 26, 6:04 PM CDT	Special Weather Statement	UNR	Oglala Lakota	41 min
May 26, 6:23 PM CDT	Special Weather Statement	UNR	Custer	37 min
May 26, 6:34 PM CDT	Special Weather Statement	UNR	Custer	41 min
May 26, 6:44 PM CDT	Special Weather Statement	UNR	Fall River	16 min
May 26, 6:59 PM CDT	Special Weather Statement	UNR	Fall River	46 min
May 27, 3:26 AM CDT	Freeze Watch	ABR	Brown, Campbell, Corson, Day, Edmunds, McPherson and 3 more	11 hr
May 27, 2:46 PM CDT	Freeze Warning	ABR	Brown, Clark, Codington, Day, Deuel, Edmunds and 6 more	17 hr
May 28, 8:33 PM CDT	Special Weather Statement	UNR		27 min
May 28, 9:03 PM CDT	Special Weather Statement	UNR		42 min
May 28, 10:44 PM CDT	Special Weather Statement	UNR	Harding	46 min
May 30, 2:05 AM CDT	Dense Fog Advisory	ABR	Brown, Buffalo, Campbell, Edmunds, Faulk, Hand and 7 more	6 hr
May 30, 4:08 AM CDT	Dense Fog Advisory	FSD	Aurora, Beadle, Brule, Charles Mix, Davison, Douglas and 3 more	5 hr
May 31, 2:46 AM CDT	Dense Fog Advisory	FSD	Brookings, Lincoln, Minnehaha, Moody	6 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	22
Tornado Warning	5
Severe Thunderstorm Watch	3
Tornado Watch	1
Mesoscale Discussion	13
Special Weather Statement	77
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	5
Wind and dust
Wind Advisory	2
Fire
Red Flag Warning	3
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	4

By county

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

25 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

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. Rebuilt daily.