Alert archive / South Dakota / Pennington County

Weather alerts in Pennington County, South Dakota, 2013

335 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pennington County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 335
Warnings: 123
Watches: 39
Advisories: 63
Busiest month: July76 alerts
Busiest day: June 21, 201316 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 2 tornado warnings covering Pennington County in 2013 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 4 minutes after it went out.

Pennington County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	1	100%	4 min
Severe thunderstorm warnings	95	71	25%	95	93%	21 min
Flash flood warnings	6	2	67%	8	100%	43 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Rapid City, SD: tornado warnings	10	1	90%	3	33%	4 min
NWS Rapid City, SD: severe thunderstorm warnings	502	363	28%	673	90%	23 min
NWS Rapid City, SD: flash flood warnings	24	5	79%	14	93%	46 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 1, 3:11 PM MST	Wind Advisory	UNR	26 hr
Jan 1, 11:30 PM MST	Winter Storm Warning	UNR	18 hr
Jan 7, 2:38 AM MST	High Wind Watch	UNR	12 hr
Jan 7, 2:29 PM MST	Wind Advisory	UNR	23 hr
Jan 9, 2:52 AM MST	High Wind Watch	UNR	12 hr
Jan 9, 2:52 AM MST	Winter Storm Watch	UNR	36 hr
Jan 9, 2:47 PM MST	High Wind Warning	UNR	15 hr
Jan 9, 2:47 PM MST	Wind Advisory	UNR	14 hr
Jan 10, 2:56 PM MST	Winter Storm Warning	UNR	37 hr
Jan 11, 4:32 AM MST	Winter Weather Advisory	UNR	30 hr
Jan 11, 11:08 AM MST	Mesoscale Discussion	SPC	6 hr
Jan 15, 8:17 AM MST	Winter Weather Advisory	UNR	15 hr
Jan 16, 2:49 AM MST	Wind Advisory	UNR	12 hr
Jan 30, 2:43 AM MST	Wind Chill Advisory	UNR	33 hr
Jan 30, 2:43 AM MST	Winter Weather Advisory	UNR	33 hr
Feb 2, 3:21 AM MST	Wind Advisory	UNR	14 hr
Feb 7, 2:45 PM MST	Winter Storm Watch	UNR	38 hr
Feb 8, 10:34 AM MST	Blizzard Watch	UNR	18 hr
Feb 9, 4:30 AM MST	Blizzard Warning	UNR	42 hr
Feb 9, 4:30 AM MST	Winter Storm Warning	UNR	42 hr
Feb 9, 4:30 AM MST	Winter Weather Advisory	UNR	42 hr
Feb 12, 2:32 PM MST	Wind Advisory	UNR	49 hr
Feb 13, 7:42 PM MST	Winter Weather Advisory	UNR	20 hr
Feb 17, 2:35 PM MST	Wind Advisory	UNR	23 hr
Mar 3, 2:15 PM MST	High Wind Watch	UNR	12 hr
Mar 4, 2:41 AM MST	High Wind Warning	UNR	20 hr
Mar 4, 3:08 AM MST	Winter Weather Advisory	UNR	24 hr
Mar 9, 3:37 AM MST	Wind Advisory	UNR	15 hr
Mar 11, 3:33 AM MDT	Wind Advisory	UNR	17 hr
Mar 14, 2:16 PM MDT	Wind Advisory	UNR	24 hr
Mar 16, 3:28 AM MDT	High Wind Watch	UNR	24 hr
Mar 16, 5:42 PM MDT	Winter Weather Advisory	UNR	4 hr
Mar 17, 3:10 AM MDT	High Wind Warning	UNR	19 hr
Mar 17, 3:10 AM MDT	Wind Advisory	UNR	33 hr
Mar 22, 3:33 PM MDT	Winter Storm Warning	UNR	4 hr
Mar 22, 3:33 PM MDT	Winter Weather Advisory	UNR	11 hr
Apr 7, 2:46 AM MDT	Winter Storm Watch	UNR	36 hr
Apr 8, 4:32 AM MDT	Winter Storm Warning	UNR	70 hr
Apr 9, 5:46 PM MDT	Mesoscale Discussion	SPC	5 hr
Apr 13, 3:14 PM MDT	Wind Advisory	UNR	29 hr
Apr 15, 3:40 AM MDT	Winter Storm Watch	UNR	24 hr
Apr 16, 3:35 AM MDT	Winter Storm Warning	UNR	35 hr
Apr 16, 3:35 AM MDT	Winter Weather Advisory	UNR	47 hr
Apr 21, 3:51 AM MDT	Winter Storm Warning	UNR	32 hr
Apr 21, 3:51 AM MDT	Winter Weather Advisory	UNR	35 hr
May 14, 2:46 AM MDT	Wind Advisory	UNR	12 hr
May 16, 2:38 PM MDT	Special Weather Statement	UNR	37 min
May 16, 3:44 PM MDT	Special Weather Statement	UNR	61 min
May 16, 5:56 PM MDT	Severe Thunderstorm Warning	UNR	49 min
May 17, 2:23 PM MDT	Mesoscale Discussion	SPC	97 min
May 17, 3:03 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
May 17, 6:28 PM MDT	Mesoscale Discussion	SPC	92 min
May 17, 9:26 PM MDT	Mesoscale Discussion	SPC	64 min
May 18, 2:31 PM MDT	Mesoscale Discussion	SPC	59 min
May 18, 2:55 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
May 18, 3:03 PM MDT	Severe Thunderstorm Warning	UNR	27 min
May 18, 3:51 PM MDT	Special Weather Statement	UNR	24 min
May 18, 5:26 PM MDT	Special Weather Statement	UNR	49 min
May 18, 5:30 PM MDT	Severe Thunderstorm Warning	UNR	30 min
May 18, 5:54 PM MDT	Severe Thunderstorm Warning	UNR	51 min
May 18, 6:53 PM MDT	Severe Thunderstorm Warning	UNR	52 min
May 18, 7:30 PM MDT	Areal Flood Advisory	UNR	3 hr
May 18, 9:14 PM MDT	Mesoscale Discussion	SPC	61 min
May 19, 2:05 PM MDT	Wind Advisory	UNR	46 hr
May 22, 2:40 PM MDT	Wind Advisory	UNR	31 hr
May 23, 5:37 AM MDT	High Wind Warning	UNR	24 hr
May 25, 11:43 AM MDT	Mesoscale Discussion	SPC	92 min
May 25, 1:52 PM MDT	Tornado Watch	SPC	8 hr
May 25, 6:27 PM MDT	Severe Thunderstorm Warning	UNR	63 min
May 25, 6:54 PM MDT	Special Weather Statement	UNR	36 min
May 25, 7:25 PM MDT	Severe Thunderstorm Warning	UNR	65 min
May 25, 7:48 PM MDT	Mesoscale Discussion	SPC	87 min
May 27, 9:53 AM MDT	Special Weather Statement	UNR	52 min
May 27, 11:36 AM MDT	Mesoscale Discussion	SPC	54 min
May 27, 11:51 AM MDT	Severe Thunderstorm Watch	SPC	10 hr
May 27, 3:52 PM MDT	Mesoscale Discussion	SPC	83 min
May 27, 4:32 PM MDT	Severe Thunderstorm Warning	UNR	28 min
May 27, 4:33 PM MDT	Severe Thunderstorm Warning	UNR	57 min
May 27, 5:29 PM MDT	Severe Thunderstorm Warning	UNR	61 min
May 27, 6:11 PM MDT	Mesoscale Discussion	SPC	94 min
May 28, 2:08 PM MDT	Mesoscale Discussion	SPC	2 hr
May 29, 3:23 AM MDT	Flood Watch	UNR	60 hr
May 29, 5:39 PM MDT	Special Weather Statement	UNR	51 min
May 29, 6:07 PM MDT	Areal Flood Advisory	UNR	6 hr
May 29, 6:40 PM MDT	Flash Flood Warning	UNR	4 hr
May 29, 8:20 PM MDT	Areal Flood Advisory	UNR	6 hr
May 29, 9:46 PM MDT	Areal Flood Warning	UNR	17 hr
May 30, 3:47 AM MDT	Wind Advisory	UNR	10 hr
May 31, 3:03 AM MDT	Wind Advisory	UNR	16 hr
Jun 8, 3:19 AM MDT	Wind Advisory	UNR	16 hr
Jun 11, 4:06 PM MDT	Mesoscale Discussion	SPC	84 min
Jun 11, 6:23 PM MDT	Mesoscale Discussion	SPC	97 min
Jun 11, 6:42 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 11, 8:16 PM MDT	Mesoscale Discussion	SPC	59 min
Jun 11, 9:48 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 11, 10:08 PM MDT	Severe Thunderstorm Warning	UNR	52 min
Jun 16, 5:01 AM MDT	Special Weather Statement	UNR	44 min
Jun 16, 7:50 AM MDT	Severe Thunderstorm Warning	UNR	55 min
Jun 16, 8:44 AM MDT	Severe Thunderstorm Warning	UNR	61 min
Jun 17, 2:35 PM MDT	Special Weather Statement	UNR	40 min
Jun 17, 2:47 PM MDT	Severe Thunderstorm Warning	UNR	58 min
Jun 17, 3:23 PM MDT	Severe Thunderstorm Warning	UNR	67 min
Jun 17, 3:38 PM MDT	Severe Thunderstorm Warning	UNR	67 min
Jun 17, 4:04 PM MDT	Severe Thunderstorm Warning	UNR	56 min
Jun 17, 4:45 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Jun 19, 11:57 PM MDT	Special Weather Statement	UNR	48 min
Jun 20, 1:02 AM MDT	Special Weather Statement	UNR	58 min
Jun 20, 1:22 AM MDT	Special Weather Statement	UNR	68 min
Jun 21, 6:49 AM MDT	Mesoscale Discussion	SPC	56 min
Jun 21, 7:02 AM MDT	Severe Thunderstorm Warning	UNR	58 min
Jun 21, 7:48 AM MDT	Severe Thunderstorm Warning	UNR	57 min
Jun 21, 8:09 AM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 21, 8:27 AM MDT	Severe Thunderstorm Warning	UNR	78 min
Jun 21, 8:39 AM MDT	Severe Thunderstorm Warning	UNR	66 min
Jun 21, 8:41 AM MDT	Special Weather Statement	UNR	49 min
Jun 21, 9:22 AM MDT	Special Weather Statement	UNR	38 min
Jun 21, 9:28 AM MDT	Severe Thunderstorm Warning	UNR	62 min
Jun 21, 9:38 AM MDT	Severe Thunderstorm Warning	UNR	67 min
Jun 21, 11:01 AM MDT	Mesoscale Discussion	SPC	89 min
Jun 21, 1:48 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 21, 2:03 PM MDT	Severe Thunderstorm Warning	UNR	57 min
Jun 21, 2:56 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Jun 21, 4:22 PM MDT	Severe Thunderstorm Warning	UNR	53 min
Jun 21, 4:45 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Jun 21, 6:24 PM MDT	Special Weather Statement	UNR	51 min
Jun 21, 8:39 PM MDT	Mesoscale Discussion	SPC	36 min
Jun 22, 1:45 PM MDT	Mesoscale Discussion	SPC	90 min
Jun 22, 2:13 PM MDT	Tornado Watch	SPC	6 hr
Jun 22, 4:42 PM MDT	Severe Thunderstorm Warning	UNR	63 min
Jun 22, 5:27 PM MDT	Special Weather Statement	UNR	48 min
Jun 22, 5:59 PM MDT	Severe Thunderstorm Warning	UNR	61 min
Jun 22, 6:08 PM MDT	Special Weather Statement	UNR	37 min
Jun 24, 1:21 PM MDT	Mesoscale Discussion	SPC	114 min
Jul 4, 9:16 AM MDT	Special Weather Statement	UNR	59 min
Jul 4, 5:36 PM MDT	Special Weather Statement	UNR	24 min
Jul 6, 4:07 PM MDT	Severe Thunderstorm Warning	UNR	53 min
Jul 6, 7:13 PM MDT	Severe Thunderstorm Warning	UNR	47 min
Jul 7, 4:12 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 7, 5:03 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 7, 8:14 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 1:51 PM MDT	Mesoscale Discussion	SPC	54 min
Jul 8, 4:01 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 8, 4:16 PM MDT	Severe Thunderstorm Warning	UNR	59 min
Jul 8, 4:59 PM MDT	Severe Thunderstorm Warning	UNR	61 min
Jul 8, 5:38 PM MDT	Severe Thunderstorm Warning	UNR	67 min
Jul 8, 7:42 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 8, 10:33 PM MDT	Severe Thunderstorm Warning	UNR	72 min
Jul 8, 10:43 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 10, 8:31 AM MDT	Special Weather Statement	UNR	44 min
Jul 10, 4:04 PM MDT	Severe Thunderstorm Warning	UNR	56 min
Jul 10, 4:49 PM MDT	Mesoscale Discussion	SPC	86 min
Jul 10, 5:25 PM MDT	Special Weather Statement	UNR	35 min
Jul 10, 6:18 PM MDT	Severe Thunderstorm Warning	UNR	57 min
Jul 11, 6:42 PM MDT	Severe Thunderstorm Warning	UNR	63 min
Jul 11, 7:23 PM MDT	Severe Thunderstorm Warning	UNR	52 min
Jul 13, 2:47 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 13, 5:33 PM MDT	Mesoscale Discussion	SPC	87 min
Jul 13, 7:37 PM MDT	Mesoscale Discussion	SPC	53 min
Jul 18, 2:27 PM MDT	Mesoscale Discussion	SPC	93 min
Jul 18, 3:30 PM MDT	Special Weather Statement	UNR	45 min
Jul 18, 4:23 PM MDT	Areal Flood Advisory	UNR	6 hr
Jul 19, 4:00 PM MDT	Special Weather Statement	UNR	45 min
Jul 19, 4:11 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Jul 19, 5:24 PM MDT	Special Weather Statement	UNR	51 min
Jul 19, 10:36 PM MDT	Mesoscale Discussion	SPC	114 min
Jul 20, 1:06 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 20, 1:34 PM MDT	Severe Thunderstorm Warning	UNR	71 min
Jul 20, 3:20 PM MDT	Severe Thunderstorm Warning	UNR	55 min
Jul 20, 3:55 PM MDT	Severe Thunderstorm Warning	UNR	65 min
Jul 20, 4:03 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 20, 4:05 PM MDT	Severe Thunderstorm Warning	UNR	55 min
Jul 20, 4:31 PM MDT	Severe Thunderstorm Warning	UNR	59 min
Jul 20, 4:55 PM MDT	Severe Thunderstorm Warning	UNR	65 min
Jul 20, 5:56 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Jul 20, 6:00 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Jul 20, 6:45 PM MDT	Special Weather Statement	UNR	45 min
Jul 20, 6:54 PM MDT	Severe Thunderstorm Warning	UNR	66 min
Jul 20, 7:05 PM MDT	Severe Thunderstorm Warning	UNR	55 min
Jul 20, 7:23 PM MDT	Mesoscale Discussion	SPC	97 min
Jul 21, 12:16 AM MDT	Special Weather Statement	UNR	29 min
Jul 21, 1:06 AM MDT	Special Weather Statement	UNR	24 min
Jul 21, 4:27 PM MDT	Mesoscale Discussion	SPC	63 min
Jul 21, 4:54 PM MDT	Special Weather Statement	UNR	51 min
Jul 22, 5:30 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 22, 6:09 PM MDT	Severe Thunderstorm Warning	UNR	51 min
Jul 22, 6:56 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Jul 22, 7:37 PM MDT	Severe Thunderstorm Warning	UNR	38 min
Jul 22, 7:42 PM MDT	Mesoscale Discussion	SPC	63 min
Jul 22, 8:09 PM MDT	Severe Thunderstorm Warning	UNR	66 min
Jul 22, 9:19 PM MDT	Special Weather Statement	UNR	26 min
Jul 22, 9:23 PM MDT	Mesoscale Discussion	SPC	67 min
Jul 22, 11:34 PM MDT	Mesoscale Discussion	SPC	56 min
Jul 23, 3:34 PM MDT	Severe Thunderstorm Warning	UNR	56 min
Jul 23, 3:45 PM MDT	Mesoscale Discussion	SPC	60 min
Jul 23, 3:54 PM MDT	Special Weather Statement	UNR	51 min
Jul 24, 6:43 PM MDT	Mesoscale Discussion	SPC	92 min
Jul 25, 3:34 AM MDT	Special Weather Statement	UNR	56 min
Jul 26, 4:00 AM MDT	Severe Thunderstorm Warning	UNR	60 min
Jul 30, 1:00 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 1:27 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 30, 2:19 PM MDT	Severe Thunderstorm Warning	UNR	56 min
Jul 30, 2:23 PM MDT	Special Weather Statement	UNR	52 min
Jul 30, 2:45 PM MDT	Tornado Warning	UNR	30 min
Jul 30, 2:48 PM MDT	Severe Thunderstorm Warning	UNR	57 min
Jul 30, 3:07 PM MDT	Severe Thunderstorm Warning	UNR	53 min
Jul 30, 3:30 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Jul 30, 4:06 PM MDT	Severe Thunderstorm Warning	UNR	39 min
Jul 30, 4:55 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 7:17 PM MDT	Mesoscale Discussion	SPC	88 min
Aug 1, 2:24 PM MDT	Special Weather Statement	UNR	36 min
Aug 1, 2:59 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Aug 1, 3:01 PM MDT	Special Weather Statement	UNR	29 min
Aug 3, 12:24 AM MDT	Severe Thunderstorm Warning	UNR	66 min
Aug 3, 4:23 AM MDT	Mesoscale Discussion	SPC	97 min
Aug 3, 6:25 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 5, 12:09 AM MDT	Severe Thunderstorm Warning	UNR	66 min
Aug 5, 12:47 AM MDT	Severe Thunderstorm Warning	UNR	58 min
Aug 5, 1:36 AM MDT	Severe Thunderstorm Warning	UNR	54 min
Aug 5, 2:04 AM MDT	Mesoscale Discussion	SPC	56 min
Aug 5, 2:31 PM MDT	Mesoscale Discussion	SPC	89 min
Aug 5, 3:02 PM MDT	Special Weather Statement	UNR	43 min
Aug 5, 5:45 PM MDT	Severe Thunderstorm Warning	UNR	45 min
Aug 5, 6:52 PM MDT	Mesoscale Discussion	SPC	53 min
Aug 5, 6:56 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 5, 9:43 PM MDT	Severe Thunderstorm Warning	UNR	47 min
Aug 5, 11:11 PM MDT	Special Weather Statement	UNR	34 min
Aug 5, 11:23 PM MDT	Severe Thunderstorm Warning	UNR	37 min
Aug 5, 11:43 PM MDT	Special Weather Statement	UNR	32 min
Aug 7, 4:13 PM MDT	Special Weather Statement	UNR	32 min
Aug 7, 5:02 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 7, 5:04 PM MDT	Severe Thunderstorm Warning	UNR	41 min
Aug 7, 5:44 PM MDT	Severe Thunderstorm Warning	UNR	46 min
Aug 7, 6:22 PM MDT	Severe Thunderstorm Warning	UNR	38 min
Aug 7, 6:49 PM MDT	Mesoscale Discussion	SPC	86 min
Aug 7, 10:05 PM MDT	Mesoscale Discussion	SPC	55 min
Aug 9, 4:24 AM MDT	Flash Flood Watch	UNR	23 hr
Aug 9, 4:27 PM MDT	Severe Thunderstorm Warning	UNR	33 min
Aug 9, 7:38 PM MDT	Flash Flood Warning	UNR	6 hr
Aug 10, 10:28 PM MDT	Mesoscale Discussion	SPC	92 min
Aug 11, 12:54 PM MDT	Severe Thunderstorm Warning	UNR	66 min
Aug 11, 1:26 PM MDT	Severe Thunderstorm Warning	UNR	64 min
Aug 11, 2:01 PM MDT	Severe Thunderstorm Warning	UNR	59 min
Aug 11, 2:32 PM MDT	Tornado Warning	UNR	43 min
Aug 11, 2:37 PM MDT	Mesoscale Discussion	SPC	53 min
Aug 11, 2:52 PM MDT	Areal Flood Advisory	UNR	6 hr
Aug 11, 2:57 PM MDT	Severe Thunderstorm Warning	UNR	63 min
Aug 12, 1:26 PM MDT	Mesoscale Discussion	SPC	3 hr
Aug 12, 2:30 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Aug 12, 3:19 PM MDT	Severe Thunderstorm Warning	UNR	56 min
Aug 12, 3:49 PM MDT	Flash Flood Warning	UNR	6 hr
Aug 13, 12:36 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 1:17 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 13, 1:48 PM MDT	Areal Flood Advisory	UNR	6 hr
Aug 13, 1:58 PM MDT	Severe Thunderstorm Warning	UNR	62 min
Aug 13, 2:17 PM MDT	Flash Flood Warning	UNR	6 hr
Aug 13, 2:51 PM MDT	Mesoscale Discussion	SPC	84 min
Aug 13, 4:45 PM MDT	Mesoscale Discussion	SPC	90 min
Aug 13, 5:15 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Aug 13, 5:54 PM MDT	Special Weather Statement	UNR	51 min
Aug 14, 3:49 PM MDT	Severe Thunderstorm Warning	UNR	41 min
Aug 20, 1:47 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 2:38 PM MDT	Severe Thunderstorm Warning	UNR	67 min
Aug 20, 2:58 PM MDT	Areal Flood Advisory	UNR	6 hr
Aug 27, 1:42 PM MDT	Mesoscale Discussion	SPC	63 min
Aug 27, 7:04 PM MDT	Special Weather Statement	UNR	41 min
Aug 28, 9:22 PM MDT	Severe Thunderstorm Warning	UNR	53 min
Aug 30, 12:45 PM MDT	Special Weather Statement	UNR	30 min
Aug 30, 1:00 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Aug 30, 1:27 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 30, 1:33 PM MDT	Severe Thunderstorm Warning	UNR	57 min
Aug 30, 1:54 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Aug 30, 2:11 PM MDT	Areal Flood Advisory	UNR	3 hr
Aug 30, 2:22 PM MDT	Flash Flood Warning	UNR	4 hr
Aug 30, 2:29 PM MDT	Severe Thunderstorm Warning	UNR	61 min
Aug 30, 3:00 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Aug 30, 4:12 PM MDT	Severe Thunderstorm Warning	UNR	63 min
Sep 4, 3:57 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 4, 6:15 PM MDT	Severe Thunderstorm Warning	UNR	60 min
Sep 5, 1:54 PM MDT	Severe Thunderstorm Warning	UNR	66 min
Sep 7, 10:28 AM MDT	Flash Flood Watch	UNR	14 hr
Sep 8, 3:51 PM MDT	Severe Thunderstorm Warning	UNR	39 min
Sep 8, 3:52 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 8, 4:24 PM MDT	Severe Thunderstorm Warning	UNR	66 min
Sep 8, 5:06 PM MDT	Severe Thunderstorm Warning	UNR	39 min
Sep 8, 6:47 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 8, 7:27 PM MDT	Severe Thunderstorm Warning	UNR	48 min
Sep 8, 8:55 PM MDT	Special Weather Statement	UNR	50 min
Sep 8, 8:58 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 9, 12:14 AM MDT	Mesoscale Discussion	SPC	61 min
Sep 18, 1:16 PM MDT	Mesoscale Discussion	SPC	89 min
Sep 22, 4:10 PM MDT	Mesoscale Discussion	SPC	2 hr
Sep 23, 2:39 AM MDT	Wind Advisory	UNR	12 hr
Sep 30, 2:28 AM MDT	Wind Advisory	UNR	12 hr
Oct 2, 3:52 AM MDT	Winter Storm Watch	UNR	58 hr
Oct 3, 3:57 AM MDT	Winter Storm Warning	UNR	62 hr
Oct 3, 1:41 PM MDT	Blizzard Warning	UNR	52 hr
Oct 4, 7:04 AM MDT	Mesoscale Discussion	SPC	4 hr
Oct 4, 12:43 PM MDT	Mesoscale Discussion	SPC	6 hr
Oct 4, 7:11 PM MDT	Mesoscale Discussion	SPC	6 hr
Oct 6, 2:55 PM MDT	Areal Flood Advisory	UNR	24 hr
Oct 9, 11:05 AM MDT	Flood Watch	UNR	41 hr
Oct 9, 3:00 PM MDT	High Wind Watch	UNR	24 hr
Oct 10, 2:42 PM MDT	High Wind Warning	UNR	27 hr
Oct 11, 3:28 AM MDT	Areal Flood Advisory	UNR	36 hr
Oct 11, 3:33 AM MDT	Areal Flood Advisory	UNR	36 hr
Oct 11, 7:11 AM MDT	Flash Flood Warning	UNR	6 hr
Oct 11, 9:03 AM MDT	Winter Weather Advisory	UNR	5 hr
Oct 11, 5:30 PM MDT	Areal Flood Warning	UNR	18 hr
Oct 13, 3:25 AM MDT	Winter Storm Watch	UNR	24 hr
Oct 13, 3:41 AM MDT	Flood Watch	UNR	48 hr
Oct 13, 1:45 PM MDT	Wind Advisory	UNR	45 hr
Oct 14, 3:37 AM MDT	Winter Storm Warning	UNR	31 hr
Oct 14, 10:00 PM MDT	Areal Flood Advisory	UNR	48 hr
Oct 27, 3:17 PM MDT	Winter Weather Advisory	UNR	42 hr
Oct 29, 2:01 PM MDT	Winter Weather Advisory	UNR	22 hr
Oct 31, 2:09 PM MDT	Wind Advisory	UNR	27 hr
Nov 4, 3:04 AM MST	Winter Weather Advisory	UNR	38 hr
Nov 7, 1:38 PM MST	Wind Advisory	UNR	26 hr
Nov 16, 2:29 PM MST	Wind Advisory	UNR	22 hr
Nov 20, 2:56 PM MST	Winter Weather Advisory	UNR	24 hr
Nov 20, 2:57 PM MST	Wind Advisory	UNR	7 hr
Dec 2, 4:26 AM MST	Winter Storm Watch	UNR	10 hr
Dec 2, 2:10 PM MST	Winter Storm Warning	UNR	27 hr
Dec 2, 2:10 PM MST	Winter Weather Advisory	UNR	51 hr
Dec 4, 1:53 PM MST	Wind Chill Advisory	UNR	4 days
Dec 8, 3:52 AM MST	Wind Chill Advisory	UNR	31 hr
Dec 9, 10:35 AM MST	Winter Weather Advisory	UNR	12 hr
Dec 18, 4:10 AM MST	Winter Weather Advisory	UNR	39 hr
Dec 19, 12:31 PM MST	Mesoscale Discussion	SPC	4 hr
Dec 22, 2:54 AM MST	Wind Chill Advisory	UNR	32 hr
Dec 23, 2:53 PM MST	Winter Weather Advisory	UNR	19 hr
Dec 27, 1:22 PM MST	Wind Advisory	UNR	31 hr
Dec 28, 9:30 AM MST	High Wind Warning	UNR	7 hr
Dec 28, 9:30 AM MST	Wind Advisory	UNR	11 hr
Dec 31, 3:40 PM MST	Winter Weather Advisory	UNR	13 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	95
Tornado Warning	2
Severe Thunderstorm Watch	19
Tornado Watch	2
Mesoscale Discussion	68
Special Weather Statement	42
Flooding
Areal Flood Warning	2
Flash Flood Warning	6
Flash Flood Watch	2
Flood Watch	3
Areal Flood Advisory	12
Winter
Blizzard Warning	2
Winter Storm Warning	10
Blizzard Watch	1
Winter Storm Watch	7
Winter Weather Advisory	20
Cold
Wind Chill Advisory	4
Wind and dust
High Wind Warning	6
High Wind Watch	5
Wind Advisory	27

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2012 2014

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.