Alert archive / South Dakota / Todd County

Weather alerts in Todd County, South Dakota, 2020

179 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Todd County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts: 179
Warnings: 53
Watches: 21
Advisories: 30
Busiest month: June51 alerts
Busiest day: July 10, 202012 alerts

Over time

By month

Warning verification

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

Todd County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	43	30	30%	44	86%	25 min
Flash flood warnings	0			0

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Rapid City, SD: tornado warnings	11	2	82%	11	27%	18 min
NWS Rapid City, SD: severe thunderstorm warnings	415	336	19%	828	89%	27 min
NWS Rapid City, SD: flash flood warnings	10	7	30%	11	91%	88 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 3, 1:55 PM CST	Wind Advisory	UNR	40 hr
Jan 16, 12:07 PM CST	Wind Advisory	UNR	19 hr
Jan 17, 3:19 AM CST	Winter Weather Advisory	UNR	9 hr
Jan 17, 3:22 AM CST	High Wind Warning	UNR	24 hr
Jan 24, 9:30 AM CST	Dense Fog Advisory	UNR	22 hr
Feb 12, 2:38 AM CST	Wind Chill Advisory	UNR	31 hr
Feb 24, 3:28 AM CST	Winter Weather Advisory	UNR	36 hr
Mar 4, 2:19 PM CST	Wind Advisory	UNR	25 hr
Mar 5, 3:00 PM CST	Fire Weather Watch	UNR	36 hr
Mar 7, 3:19 AM CST	Red Flag Warning	UNR	16 hr
Mar 13, 4:13 AM CDT	Winter Weather Advisory	UNR	32 hr
Mar 16, 3:09 PM CDT	Winter Storm Watch	UNR	49 hr
Mar 18, 3:10 AM CDT	Winter Weather Advisory	UNR	40 hr
Mar 31, 5:32 AM CDT	Dense Fog Advisory	UNR	3 hr
Mar 31, 3:05 PM CDT	Winter Weather Advisory	UNR	58 hr
Apr 9, 3:02 AM CDT	Winter Storm Watch	UNR	37 hr
Apr 10, 3:35 PM CDT	Winter Storm Warning	UNR	42 hr
Apr 20, 3:38 AM CDT	Wind Advisory	UNR	15 hr
Apr 27, 2:44 PM CDT	Wind Advisory	UNR	30 hr
Apr 28, 5:31 PM CDT	Mesoscale Discussion	SPC	119 min
Apr 30, 10:26 PM CDT	Special Weather Statement	UNR	64 min
May 3, 8:57 PM CDT	Severe Thunderstorm Warning	UNR	63 min
May 3, 9:44 PM CDT	Severe Thunderstorm Warning	UNR	46 min
May 3, 10:45 PM CDT	Special Weather Statement	LBF	60 min
May 8, 2:44 PM CDT	Wind Advisory	UNR	30 hr
May 14, 2:22 AM CDT	Special Weather Statement	UNR	38 min
May 23, 7:53 PM CDT	Mesoscale Discussion	SPC	97 min
May 23, 8:29 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 3, 1:35 PM CDT	Mesoscale Discussion	SPC	85 min
Jun 3, 2:05 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 3, 3:56 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 4, 2:25 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 4, 3:27 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 4, 6:55 PM CDT	Mesoscale Discussion	SPC	95 min
Jun 4, 9:47 PM CDT	Severe Thunderstorm Warning	UNR	58 min
Jun 4, 10:24 PM CDT	Mesoscale Discussion	SPC	66 min
Jun 4, 10:30 PM CDT	Severe Thunderstorm Warning	UNR	45 min
Jun 6, 3:33 PM CDT	Mesoscale Discussion	SPC	117 min
Jun 6, 5:49 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 6, 8:28 PM CDT	Severe Thunderstorm Warning	UNR	62 min
Jun 6, 9:26 PM CDT	Severe Thunderstorm Warning	UNR	64 min
Jun 6, 10:04 PM CDT	Severe Thunderstorm Warning	UNR	56 min
Jun 7, 2:04 PM CDT	Mesoscale Discussion	SPC	116 min
Jun 7, 3:31 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 7, 4:59 PM CDT	Special Weather Statement	UNR	31 min
Jun 7, 5:10 PM CDT	Severe Thunderstorm Warning	UNR	65 min
Jun 7, 5:16 PM CDT	Severe Thunderstorm Warning	UNR	44 min
Jun 7, 5:54 PM CDT	Severe Thunderstorm Warning	UNR	66 min
Jun 7, 6:00 PM CDT	Mesoscale Discussion	SPC	90 min
Jun 7, 7:53 PM CDT	Severe Thunderstorm Warning	UNR	67 min
Jun 7, 8:57 PM CDT	Severe Thunderstorm Warning	UNR	63 min
Jun 7, 9:18 PM CDT	Mesoscale Discussion	SPC	57 min
Jun 8, 9:34 PM CDT	Special Weather Statement	LBF	26 min
Jun 9, 5:05 AM CDT	Special Weather Statement	UNR	55 min
Jun 14, 3:36 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 16, 4:08 AM CDT	Wind Advisory	UNR	17 hr
Jun 17, 5:26 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 6:29 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 17, 6:54 PM CDT	Special Weather Statement	LBF	36 min
Jun 17, 7:03 PM CDT	Severe Thunderstorm Warning	UNR	57 min
Jun 17, 7:49 PM CDT	Severe Thunderstorm Warning	UNR	56 min
Jun 17, 8:28 PM CDT	Severe Thunderstorm Warning	UNR	45 min
Jun 17, 9:23 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 11:16 PM CDT	Mesoscale Discussion	SPC	89 min
Jun 20, 3:08 PM CDT	Severe Thunderstorm Warning	UNR	31 min
Jun 20, 3:17 PM CDT	Mesoscale Discussion	SPC	118 min
Jun 20, 3:53 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 20, 4:21 PM CDT	Special Weather Statement	UNR	39 min
Jun 21, 2:05 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 1:16 PM CDT	Mesoscale Discussion	SPC	119 min
Jun 25, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 25, 8:36 PM CDT	Special Weather Statement	UNR	39 min
Jun 25, 8:49 PM CDT	Severe Thunderstorm Warning	UNR	56 min
Jun 25, 10:27 PM CDT	Special Weather Statement	UNR	33 min
Jun 25, 10:48 PM CDT	Severe Thunderstorm Warning	UNR	72 min
Jun 27, 5:31 PM CDT	Special Weather Statement	UNR	29 min
Jun 27, 6:04 PM CDT	Severe Thunderstorm Warning	UNR	56 min
Jun 27, 7:01 PM CDT	Special Weather Statement	UNR	29 min
Jun 27, 7:39 PM CDT	Special Weather Statement	UNR	36 min
Jul 2, 8:07 PM CDT	Severe Thunderstorm Warning	UNR	38 min
Jul 2, 8:46 PM CDT	Mesoscale Discussion	SPC	59 min
Jul 2, 9:13 PM CDT	Special Weather Statement	UNR	62 min
Jul 2, 9:18 PM CDT	Special Weather Statement	LBF	42 min
Jul 2, 9:58 PM CDT	Special Weather Statement	LBF	47 min
Jul 2, 10:12 PM CDT	Special Weather Statement	UNR	33 min
Jul 3, 1:43 AM CDT	Special Weather Statement	UNR	47 min
Jul 5, 5:13 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 5, 11:15 PM CDT	Mesoscale Discussion	SPC	60 min
Jul 6, 10:47 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 6, 11:14 PM CDT	Severe Thunderstorm Warning	UNR	61 min
Jul 6, 11:54 PM CDT	Severe Thunderstorm Warning	UNR	51 min
Jul 7, 12:44 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 6:23 PM CDT	Special Weather Statement	LBF	52 min
Jul 9, 3:59 AM CDT	Special Weather Statement	UNR	46 min
Jul 9, 4:14 AM CDT	Severe Thunderstorm Warning	UNR	28 min
Jul 10, 7:11 AM CDT	Special Weather Statement	UNR	49 min
Jul 10, 8:49 AM CDT	Special Weather Statement	UNR	41 min
Jul 10, 9:13 AM CDT	Mesoscale Discussion	SPC	62 min
Jul 10, 9:28 AM CDT	Special Weather Statement	UNR	47 min
Jul 10, 10:15 AM CDT	Special Weather Statement	UNR	45 min
Jul 10, 10:57 AM CDT	Special Weather Statement	UNR	48 min
Jul 10, 11:12 AM CDT	Severe Thunderstorm Warning	UNR	50 min
Jul 10, 12:29 PM CDT	Special Weather Statement	UNR	46 min
Jul 10, 1:26 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 10, 2:08 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 10, 3:43 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 10, 6:31 PM CDT	Mesoscale Discussion	SPC	119 min
Jul 10, 8:19 PM CDT	Severe Thunderstorm Warning	UNR	56 min
Jul 10, 9:11 PM CDT	Special Weather Statement	UNR	34 min
Jul 12, 11:09 AM CDT	Severe Thunderstorm Warning	UNR	21 min
Jul 12, 11:49 AM CDT	Mesoscale Discussion	SPC	116 min
Jul 12, 12:13 PM CDT	Special Weather Statement	UNR	47 min
Jul 14, 3:19 AM CDT	Special Weather Statement	LBF	41 min
Jul 16, 3:06 PM CDT	Heat Advisory	UNR	29 hr
Jul 19, 9:52 PM CDT	Special Weather Statement	LBF	23 min
Jul 20, 1:13 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 20, 3:19 PM CDT	Mesoscale Discussion	SPC	116 min
Jul 20, 5:00 PM CDT	Severe Thunderstorm Warning	UNR	39 min
Jul 20, 6:01 PM CDT	Mesoscale Discussion	SPC	89 min
Jul 20, 6:27 PM CDT	Severe Thunderstorm Warning	UNR	63 min
Jul 23, 2:59 AM CDT	Heat Advisory	UNR	42 hr
Jul 24, 2:50 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 24, 3:21 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 24, 5:28 PM CDT	Severe Thunderstorm Warning	UNR	62 min
Jul 24, 6:27 PM CDT	Severe Thunderstorm Warning	UNR	63 min
Jul 24, 6:32 PM CDT	Special Weather Statement	LBF	28 min
Jul 24, 7:28 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 8:50 PM CDT	Areal Flood Advisory	UNR	4 hr
Jul 29, 8:00 PM CDT	Areal Flood Advisory	UNR	3 hr
Jul 31, 7:41 PM CDT	Severe Thunderstorm Warning	UNR	79 min
Aug 4, 6:05 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 6, 3:46 AM CDT	Special Weather Statement	LBF	44 min
Aug 6, 4:34 AM CDT	Special Weather Statement	LBF	41 min
Aug 8, 6:00 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 8, 8:58 PM CDT	Mesoscale Discussion	SPC	92 min
Aug 8, 9:27 PM CDT	Severe Thunderstorm Warning	UNR	63 min
Aug 8, 10:01 PM CDT	Severe Thunderstorm Warning	UNR	59 min
Aug 8, 10:55 PM CDT	Severe Thunderstorm Warning	UNR	58 min
Aug 10, 2:45 AM CDT	Severe Thunderstorm Warning	UNR	60 min
Aug 10, 3:19 AM CDT	Mesoscale Discussion	SPC	116 min
Aug 10, 3:36 AM CDT	Severe Thunderstorm Warning	UNR	54 min
Aug 10, 4:21 AM CDT	Severe Thunderstorm Warning	UNR	37 min
Aug 10, 5:00 AM CDT	Special Weather Statement	UNR	45 min
Aug 12, 5:28 PM CDT	Mesoscale Discussion	SPC	92 min
Aug 15, 6:27 PM CDT	Special Weather Statement	LBF	63 min
Aug 15, 6:50 PM CDT	Special Weather Statement	UNR	40 min
Aug 15, 6:58 PM CDT	Special Weather Statement	LBF	32 min
Aug 23, 7:57 PM CDT	Special Weather Statement	UNR	63 min
Aug 23, 9:51 PM CDT	Severe Thunderstorm Warning	UNR	26 min
Aug 24, 3:28 AM CDT	Heat Advisory	UNR	17 hr
Aug 25, 3:01 AM CDT	Heat Advisory	UNR	17 hr
Aug 26, 7:20 PM CDT	Severe Thunderstorm Warning	UNR	55 min
Aug 26, 7:21 PM CDT	Mesoscale Discussion	SPC	114 min
Aug 26, 8:09 PM CDT	Severe Thunderstorm Warning	UNR	20 min
Aug 26, 8:11 PM CDT	Severe Thunderstorm Warning	UNR	64 min
Aug 26, 8:13 PM CDT	Severe Thunderstorm Warning	UNR	62 min
Aug 26, 9:01 PM CDT	Severe Thunderstorm Warning	UNR	29 min
Aug 27, 6:31 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 27, 9:20 PM CDT	Mesoscale Discussion	SPC	85 min
Aug 30, 3:22 PM CDT	Mesoscale Discussion	SPC	113 min
Sep 13, 3:03 PM CDT	Red Flag Warning	UNR	30 hr
Sep 14, 2:31 AM CDT	Dense Fog Advisory	UNR	6 hr
Sep 25, 2:58 PM CDT	Red Flag Warning	UNR	27 hr
Sep 26, 8:32 PM CDT	Wind Advisory	UNR	23 hr
Sep 29, 2:34 PM CDT	Wind Advisory	UNR	29 hr
Oct 13, 2:50 PM CDT	High Wind Warning	UNR	28 hr
Oct 14, 7:02 PM CDT	Wind Advisory	UNR	82 min
Oct 22, 3:42 PM CDT	Winter Storm Watch	UNR	23 hr
Oct 23, 3:05 PM CDT	Winter Storm Warning	UNR	44 hr
Oct 23, 3:05 PM CDT	Winter Weather Advisory	UNR	47 hr
Oct 30, 2:46 PM CDT	Wind Advisory	UNR	28 hr
Nov 6, 2:42 AM CST	Red Flag Warning	UNR	15 hr
Nov 7, 2:23 AM CST	High Wind Watch	UNR	12 hr
Nov 7, 2:39 PM CST	High Wind Warning	UNR	21 hr
Nov 13, 3:14 PM CST	Wind Advisory	UNR	32 hr
Dec 21, 2:45 PM CST	High Wind Watch	UNR	13 hr
Dec 22, 4:13 AM CST	High Wind Warning	UNR	34 hr
Dec 22, 2:25 PM CST	Winter Weather Advisory	UNR	28 hr
Dec 28, 4:06 AM CST	Winter Weather Advisory	UNR	37 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	43
Severe Thunderstorm Watch	15
Mesoscale Discussion	37
Special Weather Statement	38
Flooding
Areal Flood Advisory	2
Winter
Winter Storm Warning	2
Winter Storm Watch	3
Winter Weather Advisory	8
Heat
Heat Advisory	4
Cold
Wind Chill Advisory	1
Wind and dust
High Wind Warning	4
High Wind Watch	2
Wind Advisory	12
Fire
Red Flag Warning	4
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.