Alert archive / South Dakota / Hamlin County

Weather alerts in Hamlin County, South Dakota, 2025

168 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Hamlin County and its neighbors

Each county as a circle sized by its count in 2025. Tap one for its archive.

Alerts: 168
Warnings: 62
Watches: 19
Advisories: 51
Busiest month: July37 alerts
Busiest day: July 28, 202514 alerts

Over time

By month

Warning verification

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

1 of 9 tornado warnings covering Hamlin County in 2025 had a tornado report inside them.

Hamlin County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	9	1	89%	0
Severe thunderstorm warnings	21	15	29%	15	73%	31 min
Flash flood warnings	2	0	100%	0

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Aberdeen, SD: tornado warnings	28	7	75%	13	77%	19 min
NWS Aberdeen, SD: severe thunderstorm warnings	268	143	47%	350	69%	24 min
NWS Aberdeen, SD: flash flood warnings	15	6	60%	12	58%	96 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	Lasted
Jan 16, 12:57 PM CST	Wind Advisory	ABR	30 hr
Jan 17, 2:01 PM CST	Cold Weather Advisory	ABR	46 hr
Jan 18, 1:36 PM CST	Cold Weather Advisory	ABR	70 hr
Jan 18, 1:36 PM CST	Extreme Cold Warning	ABR	70 hr
Jan 20, 3:00 AM CST	Cold Weather Advisory	ABR	9 hr
Jan 20, 11:45 AM CST	Extreme Cold Warning	ABR	24 hr
Feb 6, 2:24 AM CST	Winter Storm Watch	ABR	24 hr
Feb 7, 2:22 AM CST	Winter Weather Advisory	ABR	33 hr
Feb 10, 2:21 AM CST	Cold Weather Advisory	ABR	34 hr
Feb 12, 3:14 AM CST	Cold Weather Advisory	ABR	30 hr
Feb 15, 2:03 AM CST	Extreme Cold Watch	ABR	23 hr
Feb 16, 1:23 AM CST	Extreme Cold Warning	ABR	3 days
Feb 25, 4:14 AM CST	Dense Fog Advisory	ABR	6 hr
Feb 27, 1:13 PM CST	Wind Advisory	ABR	29 hr
Mar 3, 2:11 PM CST	Winter Weather Advisory	ABR	36 hr
Mar 4, 10:25 AM CST	Mesoscale Discussion	SPC	4 hr
Mar 9, 3:11 AM CDT	Red Flag Warning	ABR	41 hr
Mar 12, 2:50 PM CDT	Red Flag Warning	ABR	29 hr
Mar 13, 3:15 PM CDT	Winter Storm Watch	ABR	22 hr
Mar 13, 3:17 PM CDT	Wind Advisory	ABR	47 hr
Mar 14, 1:08 PM CDT	Blizzard Warning	ABR	18 hr
Mar 20, 3:51 AM CDT	Red Flag Warning	ABR	15 hr
Mar 22, 2:34 PM CDT	Wind Advisory	ABR	28 hr
Mar 29, 2:39 AM CDT	Winter Weather Advisory	ABR	25 hr
Mar 30, 2:31 PM CDT	Winter Storm Watch	ABR	37 hr
Mar 31, 2:57 PM CDT	Winter Weather Advisory	ABR	52 hr
Apr 1, 3:25 AM CDT	Winter Storm Warning	ABR	46 hr
Apr 9, 2:00 AM CDT	Red Flag Warning	ABR	18 hr
Apr 11, 3:01 AM CDT	Dense Fog Advisory	ABR	7 hr
Apr 14, 3:24 AM CDT	Wind Advisory	ABR	16 hr
Apr 14, 1:28 PM CDT	Mesoscale Discussion	SPC	3 hr
May 8, 2:52 PM CDT	Fire Weather Watch	ABR	48 hr
May 10, 2:14 AM CDT	Red Flag Warning	ABR	67 hr
May 10, 2:31 PM CDT	Fire Weather Watch	ABR	24 hr
May 12, 1:53 PM CDT	Fire Weather Watch	ABR	14 hr
May 13, 3:45 AM CDT	Red Flag Warning	ABR	17 hr
May 14, 1:34 PM CDT	Wind Advisory	ABR	53 hr
May 15, 1:08 AM CDT	Mesoscale Discussion	SPC	97 min
May 15, 3:21 AM CDT	High Wind Warning	ABR	40 hr
May 15, 3:35 AM CDT	Special Weather Statement	ABR	40 min
May 15, 7:23 AM CDT	Mesoscale Discussion	SPC	97 min
May 15, 7:05 PM CDT	Wind Advisory	ABR	24 hr
May 17, 2:35 AM CDT	Frost Advisory	ABR	28 hr
May 19, 2:19 AM CDT	Wind Advisory	ABR	23 hr
Jun 2, 1:20 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 18, 2:26 PM CDT	Extreme Heat Watch	ABR	23 hr
Jun 19, 1:27 PM CDT	Heat Advisory	ABR	32 hr
Jun 19, 9:11 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 19, 10:08 PM CDT	Severe Thunderstorm Warning	ABR	36 min
Jun 19, 10:34 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	41 min
Jun 19, 10:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 19, 11:03 PM CDT	Tornado Warning Tornado observed	ABR	27 min
Jun 19, 11:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	47 min
Jun 19, 11:26 PM CDT	Tornado Warning	ABR	34 min
Jun 19, 11:58 PM CDT	Severe Thunderstorm Warning	ABR	47 min
Jun 20, 10:32 AM CDT	Heat Advisory	ABR	34 hr
Jun 21, 2:08 PM CDT	Heat Advisory	ABR	29 hr
Jun 26, 3:04 AM CDT	Dense Fog Advisory	ABR	9 hr
Jun 28, 4:49 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 28, 6:01 PM CDT	Severe Thunderstorm Warning	ABR	44 min
Jun 28, 6:33 PM CDT	Tornado Warning	ABR	42 min
Jun 28, 6:36 PM CDT	Tornado Watch	SPC	6 hr
Jun 28, 9:10 PM CDT	Severe Thunderstorm Warning	ABR	21 min
Jun 28, 9:14 PM CDT	Tornado Warning	ABR	26 min
Jun 28, 9:43 PM CDT	Tornado Warning	ABR	47 min
Jun 28, 10:24 PM CDT	Flash Flood Warning	ABR	6 hr
Jun 28, 10:29 PM CDT	Tornado Warning	ABR	46 min
Jun 28, 11:38 PM CDT	Severe Thunderstorm Warning	ABR	35 min
Jun 29, 3:18 AM CDT	River Flood Warning	ABR	43 hr
Jun 29, 4:08 AM CDT	Areal Flood Warning	ABR	15 hr
Jun 29, 6:17 AM CDT	River Flood Warning	FSD	6 days
Jun 29, 9:30 PM CDT	Severe Thunderstorm Warning	ABR	45 min
Jun 29, 10:17 PM CDT	Special Weather Statement	ABR	28 min
Jul 7, 1:11 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 7, 3:14 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 7, 4:12 PM CDT	Special Weather Statement	ABR	33 min
Jul 7, 4:26 PM CDT	Severe Thunderstorm Warning	ABR	49 min
Jul 9, 7:36 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 9, 11:16 PM CDT	Special Weather Statement	ABR	59 min
Jul 9, 11:18 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 10, 12:17 AM CDT	Special Weather Statement	ABR	58 min
Jul 13, 5:47 PM CDT	Mesoscale Discussion	SPC	118 min
Jul 18, 6:03 PM CDT	Mesoscale Discussion	SPC	117 min
Jul 21, 7:44 AM CDT	Special Weather Statement	ABR	31 min
Jul 22, 2:40 AM CDT	Heat Advisory	ABR	16 hr
Jul 23, 7:28 AM CDT	Mesoscale Discussion	SPC	92 min
Jul 23, 7:56 AM CDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 23, 9:09 AM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	51 min
Jul 23, 10:24 AM CDT	High Wind Warning	ABR	73 min
Jul 26, 2:14 AM CDT	Heat Advisory	ABR	42 hr
Jul 26, 10:59 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 27, 12:49 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 27, 4:25 PM CDT	Mesoscale Discussion	SPC	35 min
Jul 27, 4:47 PM CDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 27, 6:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	41 min
Jul 27, 6:47 PM CDT	Tornado Warning	ABR	31 min
Jul 27, 7:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	39 min
Jul 27, 7:19 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 27, 7:37 PM CDT	Tornado Warning	ABR	38 min
Jul 27, 7:44 PM CDT	Severe Thunderstorm Warning	ABR	76 min
Jul 27, 8:29 PM CDT	Tornado Warning	ABR	34 min
Jul 27, 8:40 PM CDT	Severe Thunderstorm Warning	ABR	50 min
Jul 27, 8:53 PM CDT	Areal Flood Warning	ABR	13 hr
Jul 27, 9:28 PM CDT	Severe Thunderstorm Warning	ABR	47 min
Jul 27, 10:18 PM CDT	Areal Flood Warning	ABR	12 hr
Jul 28, 12:21 AM CDT	River Flood Warning	ABR	4 days
Jul 28, 8:35 AM CDT	River Flood Warning	FSD	21 days
Jul 28, 10:22 AM CDT	Areal Flood Warning	ABR	3 hr
Jul 28, 3:46 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 28, 5:49 PM CDT	Mesoscale Discussion	SPC	116 min
Aug 5, 4:03 PM CDT	Tornado Watch	SPC	8 hr
Aug 5, 10:54 PM CDT	Severe Thunderstorm Warning Destructive damage threat	ABR	51 min
Aug 5, 11:20 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	40 min
Aug 5, 11:33 PM CDT	Mesoscale Discussion	SPC	117 min
Aug 6, 1:26 PM CDT	River Flood Warning	ABR	4 days
Aug 6, 6:38 PM CDT	River Flood Warning	FSD	21 days
Aug 11, 7:56 PM CDT	Special Weather Statement	ABR	34 min
Aug 11, 9:14 PM CDT	Special Weather Statement	ABR	16 min
Aug 13, 6:51 PM CDT	Mesoscale Discussion	SPC	114 min
Aug 15, 11:58 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 16, 2:18 AM CDT	Mesoscale Discussion	SPC	87 min
Aug 16, 3:08 AM CDT	Severe Thunderstorm Warning	ABR	67 min
Aug 16, 3:57 AM CDT	Severe Thunderstorm Warning	ABR	48 min
Aug 17, 6:36 AM CDT	River Flood Warning	FSD	11 days
Aug 17, 4:14 PM CDT	Areal Flood Warning	ABR	42 hr
Aug 18, 3:08 AM CDT	Dense Fog Advisory	ABR	7 hr
Aug 19, 4:51 AM CDT	Dense Fog Advisory	ABR	4 hr
Aug 21, 3:29 PM CDT	Flood Watch	ABR	19 hr
Aug 21, 5:21 PM CDT	Mesoscale Discussion	SPC	84 min
Aug 21, 8:24 PM CDT	Mesoscale Discussion	SPC	96 min
Aug 21, 11:57 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 22, 12:05 AM CDT	Mesoscale Discussion	SPC	2 hr
Aug 22, 9:56 AM CDT	River Flood Warning	ABR	5 days
Aug 27, 2:18 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 31, 2:35 AM CDT	Dense Fog Advisory	ABR	7 hr
Sep 2, 3:16 PM CDT	Mesoscale Discussion	SPC	119 min
Sep 2, 5:04 PM CDT	Severe Thunderstorm Warning	ABR	41 min
Sep 2, 6:03 PM CDT	Severe Thunderstorm Warning	ABR	18 min
Sep 3, 2:45 PM CDT	Wind Advisory	ABR	30 hr
Sep 6, 2:22 PM CDT	Frost Advisory	ABR	19 hr
Sep 10, 2:45 AM CDT	Dense Fog Advisory	ABR	8 hr
Sep 14, 3:28 PM CDT	Mesoscale Discussion	SPC	92 min
Sep 17, 6:52 AM CDT	Flash Flood Warning	ABR	4 hr
Sep 17, 6:47 PM CDT	Areal Flood Warning	ABR	3 hr
Sep 17, 6:52 PM CDT	Areal Flood Warning	ABR	5 hr
Oct 15, 7:23 PM CDT	Dense Fog Advisory	ABR	17 hr
Oct 20, 2:41 PM CDT	Wind Advisory	ABR	22 hr
Oct 25, 2:00 PM CDT	Wind Advisory	ABR	27 hr
Nov 24, 1:33 PM CST	Wind Advisory	ABR	30 hr
Nov 24, 1:33 PM CST	Winter Weather Advisory	ABR	34 hr
Nov 27, 1:52 PM CST	Winter Weather Advisory	ABR	52 hr
Dec 5, 12:32 PM CST	Winter Weather Advisory	ABR	27 hr
Dec 8, 1:24 PM CST	Winter Weather Advisory	ABR	26 hr
Dec 8, 2:01 PM CST	High Wind Warning	ABR	40 hr
Dec 9, 1:17 PM CST	Winter Weather Advisory	ABR	17 hr
Dec 9, 1:17 PM CST	Winter Weather Advisory	ABR	53 hr
Dec 12, 2:00 PM CST	Cold Weather Advisory	ABR	44 hr
Dec 16, 2:01 PM CST	High Wind Watch	ABR	12 hr
Dec 16, 2:01 PM CST	Wind Advisory	ABR	31 hr
Dec 17, 2:22 AM CST	High Wind Warning	ABR	40 hr
Dec 17, 12:16 PM CST	Winter Weather Advisory	ABR	30 hr
Dec 18, 9:09 AM CST	Mesoscale Discussion	SPC	5 hr
Dec 18, 5:38 PM CST	Wind Advisory	ABR	3 hr
Dec 24, 8:45 PM CST	Dense Fog Advisory	ABR	45 hr
Dec 26, 7:02 PM CST	Dense Fog Advisory	ABR	16 hr
Dec 27, 4:27 AM CST	Wind Advisory	ABR	47 hr
Dec 27, 3:52 PM CST	Dense Fog Advisory	ABR	8 hr
Dec 27, 6:52 PM CST	Winter Weather Advisory	ABR	32 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	21
Tornado Warning	9
Severe Thunderstorm Watch	7
Tornado Watch	2
Mesoscale Discussion	28
Special Weather Statement	8
Flooding
Areal Flood Warning	7
Flash Flood Warning	2
River Flood Warning	8
Flood Watch	1
Winter
Blizzard Warning	1
Winter Storm Warning	1
Winter Storm Watch	3
Winter Weather Advisory	12
Heat
Extreme Heat Watch	1
Heat Advisory	5
Cold
Extreme Cold Warning	3
Extreme Cold Watch	1
Cold Weather Advisory	6
Frost Advisory	2
Wind and dust
High Wind Warning	4
High Wind Watch	1
Wind Advisory	15
Fire
Red Flag Warning	6
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	11

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2024 2026

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.