Alert archive / Wyoming / Laramie County

Weather alerts in Laramie County, Wyoming, 2018

440 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Laramie County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts: 440
Warnings: 170
Watches: 71
Advisories: 49
Busiest month: May89 alerts
Busiest day: July 29, 201825 alerts

Over time

By month

Warning verification

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

9 of 18 tornado warnings covering Laramie County in 2018 had a tornado report inside them; 13 of 15 tornado reports fell inside a warning, on average 21 minutes after it went out.

Laramie County, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	18	9	50%	15	87%	21 min
Severe thunderstorm warnings	84	30	64%	62	68%	21 min
Flash flood warnings	9	6	33%	18	89%	32 min

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	34	16	53%	34	82%	22 min
NWS Cheyenne, WY: severe thunderstorm warnings	273	82	70%	165	75%	20 min
NWS Cheyenne, WY: flash flood warnings	20	10	50%	23	87%	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, 2:41 AM MST	Freezing Fog Advisory	CYS	6 hr
Jan 8, 2:12 AM MST	High Wind Watch	CYS	19 hr
Jan 8, 4:40 PM MST	High Wind Warning	CYS	24 hr
Jan 10, 1:33 PM MST	High Wind Watch	CYS	14 hr
Jan 11, 3:31 AM MST	High Wind Watch	CYS	10 hr
Jan 11, 3:31 AM MST	High Wind Warning	CYS	29 hr
Jan 14, 2:08 PM MST	Winter Weather Advisory	CYS	21 hr
Jan 17, 12:59 PM MST	High Wind Watch	CYS	33 hr
Jan 18, 1:46 AM MST	High Wind Warning	CYS	30 hr
Jan 18, 2:40 PM MST	Winter Storm Watch	CYS	36 hr
Jan 19, 1:59 PM MST	Winter Storm Warning	CYS	62 hr
Jan 21, 2:06 PM MST	Winter Storm Warning	CYS	14 hr
Jan 22, 4:11 AM MST	Winter Weather Advisory	CYS	10 hr
Jan 22, 11:57 AM MST	High Wind Warning	CYS	3 hr
Jan 23, 2:24 AM MST	High Wind Watch	CYS	22 hr
Jan 24, 12:53 AM MST	High Wind Warning	CYS	14 hr
Jan 24, 3:07 PM MST	High Wind Warning	CYS	5 hr
Jan 25, 1:37 AM MST	High Wind Watch	CYS	16 hr
Jan 25, 5:17 PM MST	High Wind Warning	CYS	15 hr
Jan 27, 2:08 AM MST	High Wind Watch	CYS	19 hr
Jan 27, 12:37 PM MST	High Wind Warning	CYS	19 hr
Jan 29, 2:30 AM MST	High Wind Watch	CYS	24 hr
Jan 29, 12:55 PM MST	High Wind Warning	CYS	52 hr
Feb 1, 2:06 PM MST	High Wind Warning	CYS	4 days
Feb 2, 3:56 AM MST	High Wind Watch	CYS	10 hr
Feb 3, 1:52 PM MST	High Wind Watch	CYS	14 hr
Feb 4, 3:32 AM MST	High Wind Watch	CYS	10 hr
Feb 4, 3:32 AM MST	High Wind Warning	CYS	28 hr
Feb 5, 1:35 PM MST	Winter Weather Advisory	CYS	4 hr
Feb 7, 8:29 AM MST	High Wind Warning	CYS	37 hr
Feb 7, 2:17 PM MST	High Wind Watch	CYS	19 hr
Feb 8, 1:19 PM MST	Winter Weather Advisory	CYS	33 hr
Feb 9, 3:07 AM MST	Dense Fog Advisory	CYS	8 hr
Feb 12, 12:55 PM MST	High Wind Watch	CYS	23 hr
Feb 13, 3:12 AM MST	High Wind Warning	CYS	39 hr
Feb 14, 10:29 PM MST	Winter Weather Advisory	CYS	6 hr
Feb 15, 1:52 PM MST	High Wind Watch	CYS	13 hr
Feb 16, 2:58 AM MST	High Wind Warning	CYS	61 hr
Feb 16, 2:20 PM MST	Winter Storm Watch	CYS	36 hr
Feb 17, 2:30 PM MST	Winter Storm Warning	CYS	60 hr
Feb 18, 2:46 PM MST	Winter Weather Advisory	CYS	39 hr
Feb 19, 10:17 PM MST	Wind Chill Advisory	CYS	10 hr
Feb 20, 2:40 AM MST	Wind Chill Warning	CYS	5 hr
Feb 23, 2:35 PM MST	High Wind Watch	CYS	23 hr
Feb 24, 2:05 AM MST	High Wind Warning	CYS	16 hr
Feb 24, 1:32 PM MST	High Wind Warning	CYS	36 hr
Mar 3, 1:35 PM MST	High Wind Watch	CYS	13 hr
Mar 4, 2:09 AM MST	High Wind Warning	CYS	42 hr
Mar 14, 2:01 AM MDT	High Wind Watch	CYS	24 hr
Mar 14, 2:08 AM MDT	Winter Storm Watch	CYS	24 hr
Mar 15, 1:51 AM MDT	Winter Storm Warning	CYS	37 hr
Mar 15, 1:51 AM MDT	Winter Weather Advisory	CYS	37 hr
Mar 17, 2:11 AM MDT	Winter Storm Watch	CYS	26 hr
Mar 17, 2:15 PM MDT	Winter Weather Advisory	CYS	37 hr
Mar 25, 3:35 AM MDT	Winter Weather Advisory	CYS	29 hr
Mar 25, 11:45 PM MDT	Dense Fog Advisory	CYS	8 hr
Mar 28, 2:41 AM MDT	Winter Weather Advisory	CYS	23 hr
Mar 29, 2:05 AM MDT	High Wind Watch	CYS	18 hr
Mar 29, 7:46 PM MDT	High Wind Warning	CYS	28 hr
Mar 31, 2:41 AM MDT	Winter Weather Advisory	CYS	32 hr
Apr 1, 2:38 PM MDT	High Wind Watch	CYS	13 hr
Apr 1, 2:38 PM MDT	High Wind Warning	CYS	13 hr
Apr 2, 4:07 AM MDT	High Wind Warning	CYS	26 hr
Apr 4, 3:04 AM MDT	High Wind Warning	CYS	16 hr
Apr 5, 2:32 AM MDT	Winter Weather Advisory	CYS	39 hr
Apr 7, 1:32 AM MDT	Dense Fog Advisory	CYS	7 hr
Apr 7, 1:32 AM MDT	High Wind Watch	CYS	13 hr
Apr 7, 2:29 PM MDT	High Wind Warning	CYS	24 hr
Apr 10, 2:42 PM MDT	High Wind Watch	CYS	5 hr
Apr 10, 7:35 PM MDT	High Wind Warning	CYS	19 hr
Apr 11, 2:52 PM MDT	High Wind Watch	CYS	13 hr
Apr 12, 3:40 AM MDT	Winter Weather Advisory	CYS	47 hr
Apr 12, 4:10 AM MDT	High Wind Watch	CYS	8 hr
Apr 12, 4:10 AM MDT	High Wind Warning	CYS	16 hr
Apr 12, 12:25 PM MDT	High Wind Warning	CYS	32 hr
Apr 16, 1:08 PM MDT	High Wind Watch	CYS	14 hr
Apr 16, 7:01 PM MDT	High Wind Warning	CYS	26 hr
Apr 17, 4:38 PM MDT	High Wind Warning	CYS	3 hr
Apr 19, 2:25 PM MDT	Winter Weather Advisory	CYS	45 hr
Apr 23, 12:53 PM MDT	Special Weather Statement	CYS	52 min
Apr 23, 1:37 PM MDT	Special Weather Statement	CYS	53 min
Apr 23, 3:18 PM MDT	Special Weather Statement	CYS	42 min
Apr 23, 4:06 PM MDT	Special Weather Statement	CYS	24 min
Apr 23, 5:42 PM MDT	Special Weather Statement	CYS	33 min
Apr 23, 6:13 PM MDT	Special Weather Statement	CYS	32 min
Apr 30, 1:36 PM MDT	Mesoscale Discussion	SPC	54 min
Apr 30, 5:43 PM MDT	Special Weather Statement	CYS	32 min
Apr 30, 7:58 PM MDT	Special Weather Statement	CYS	32 min
Apr 30, 8:33 PM MDT	Special Weather Statement	CYS	42 min
May 1, 2:00 AM MDT	Winter Storm Watch	CYS	23 hr
May 1, 1:01 PM MDT	Mesoscale Discussion	SPC	119 min
May 1, 2:26 PM MDT	Winter Storm Warning	CYS	46 hr
May 2, 1:20 AM MDT	Winter Weather Advisory	CYS	35 hr
May 10, 12:56 PM MDT	Mesoscale Discussion	SPC	2 hr
May 10, 1:41 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
May 10, 2:28 PM MDT	Severe Thunderstorm Warning	CYS	47 min
May 10, 3:01 PM MDT	Severe Thunderstorm Warning	CYS	44 min
May 11, 12:00 PM MDT	Mesoscale Discussion	SPC	2 hr
May 11, 2:02 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 11, 3:32 PM MDT	Special Weather Statement	CYS	43 min
May 11, 3:36 PM MDT	Severe Thunderstorm Warning	CYS	24 min
May 11, 3:44 PM MDT	Special Weather Statement	CYS	46 min
May 11, 4:20 PM MDT	Special Weather Statement	CYS	40 min
May 11, 4:22 PM MDT	Special Weather Statement	CYS	38 min
May 11, 4:33 PM MDT	Severe Thunderstorm Warning	CYS	24 min
May 11, 4:34 PM MDT	Severe Thunderstorm Warning	CYS	26 min
May 11, 5:28 PM MDT	Dense Fog Advisory	CYS	13 hr
May 11, 5:39 PM MDT	Mesoscale Discussion	SPC	96 min
May 11, 8:24 PM MDT	Special Weather Statement	CYS	66 min
May 12, 8:26 AM MDT	Dense Fog Advisory	CYS	4 hr
May 12, 6:49 PM MDT	Dense Fog Advisory	CYS	15 hr
May 13, 6:44 PM MDT	Special Weather Statement	CYS	31 min
May 14, 12:38 PM MDT	Mesoscale Discussion	SPC	2 hr
May 14, 1:42 PM MDT	Severe Thunderstorm Warning	CYS	21 min
May 14, 2:07 PM MDT	Special Weather Statement	CYS	38 min
May 14, 2:32 PM MDT	Severe Thunderstorm Warning	CYS	31 min
May 14, 3:02 PM MDT	Severe Thunderstorm Warning	CYS	58 min
May 14, 3:24 PM MDT	Special Weather Statement	CYS	51 min
May 14, 3:39 PM MDT	Areal Flood Advisory	CYS	3 hr
May 14, 3:55 PM MDT	Special Weather Statement	CYS	50 min
May 14, 4:00 PM MDT	Flash Flood Warning	CYS	3 hr
May 15, 3:14 PM MDT	Special Weather Statement	CYS	31 min
May 15, 3:44 PM MDT	Special Weather Statement	CYS	46 min
May 15, 11:50 PM MDT	Special Weather Statement	CYS	40 min
May 16, 1:40 PM MDT	Special Weather Statement	CYS	50 min
May 17, 12:58 PM MDT	Mesoscale Discussion	SPC	92 min
May 17, 4:19 PM MDT	Mesoscale Discussion	SPC	116 min
May 18, 3:50 AM MDT	Flood Watch	CYS	38 hr
May 18, 1:50 PM MDT	Mesoscale Discussion	SPC	115 min
May 19, 8:01 AM MDT	Flash Flood Warning	CYS	3 hr
May 19, 10:01 AM MDT	Areal Flood Warning	CYS	6 hr
May 19, 3:18 PM MDT	Areal Flood Warning	CYS	6 hr
May 19, 7:30 PM MDT	Dense Fog Advisory	CYS	15 hr
May 21, 2:17 PM MDT	Special Weather Statement	CYS	28 min
May 21, 2:23 PM MDT	Special Weather Statement	CYS	37 min
May 21, 2:55 PM MDT	Special Weather Statement	CYS	35 min
May 21, 3:00 PM MDT	Mesoscale Discussion	SPC	2 hr
May 21, 3:16 PM MDT	Special Weather Statement	CYS	44 min
May 21, 3:48 PM MDT	Special Weather Statement	CYS	42 min
May 21, 4:05 PM MDT	Severe Thunderstorm Warning	CYS	40 min
May 21, 5:02 PM MDT	Special Weather Statement	CYS	43 min
May 21, 5:52 PM MDT	Special Weather Statement	CYS	38 min
May 21, 6:18 PM MDT	Severe Thunderstorm Warning	CYS	42 min
May 22, 4:56 PM MDT	Mesoscale Discussion	SPC	2 hr
May 23, 1:00 PM MDT	Mesoscale Discussion	SPC	2 hr
May 23, 1:31 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 23, 5:07 PM MDT	Mesoscale Discussion	SPC	83 min
May 27, 2:58 AM MDT	Flash Flood Watch	CYS	21 hr
May 27, 12:05 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
May 27, 2:15 PM MDT	Severe Thunderstorm Warning	CYS	31 min
May 27, 2:25 PM MDT	Mesoscale Discussion	SPC	2 hr
May 27, 2:43 PM MDT	Tornado Warning Tornado observed	CYS	32 min
May 27, 3:08 PM MDT	Tornado Warning Tornado observed	CYS	8 min
May 27, 3:21 PM MDT	Tornado Warning Tornado observed	CYS	24 min
May 27, 3:42 PM MDT	Tornado Warning Tornado observed	CYS	48 min
May 27, 3:48 PM MDT	Areal Flood Advisory	CYS	3 hr
May 27, 4:08 PM MDT	Special Weather Statement	CYS	52 min
May 27, 4:15 PM MDT	Tornado Warning	CYS	45 min
May 27, 4:17 PM MDT	Severe Thunderstorm Warning	CYS	43 min
May 27, 4:42 PM MDT	Mesoscale Discussion	SPC	93 min
May 27, 4:47 PM MDT	Flash Flood Warning	CYS	3 hr
May 27, 5:00 PM MDT	Tornado Warning	CYS	19 min
May 28, 2:36 AM MDT	Flash Flood Watch	CYS	24 hr
May 28, 1:39 PM MDT	Mesoscale Discussion	SPC	96 min
May 28, 2:01 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 28, 4:07 PM MDT	Special Weather Statement	CYS	38 min
May 28, 4:40 PM MDT	Special Weather Statement	CYS	50 min
May 28, 4:44 PM MDT	Severe Thunderstorm Warning	CYS	31 min
May 28, 5:10 PM MDT	Special Weather Statement	CYS	50 min
May 28, 5:23 PM MDT	Special Weather Statement	CYS	52 min
May 28, 5:39 PM MDT	Severe Thunderstorm Warning	CYS	66 min
May 28, 5:47 PM MDT	Special Weather Statement	CYS	43 min
May 28, 6:03 PM MDT	Flash Flood Warning	CYS	3 hr
May 28, 6:26 PM MDT	Severe Thunderstorm Warning	CYS	49 min
May 28, 8:58 PM MDT	Areal Flood Advisory	CYS	4 hr
May 30, 3:07 PM MDT	Special Weather Statement	CYS	38 min
Jun 6, 4:46 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 6, 6:29 PM MDT	Tornado Warning Tornado observed	CYS	31 min
Jun 6, 7:16 PM MDT	Special Weather Statement	CYS	29 min
Jun 6, 7:29 PM MDT	Special Weather Statement	CYS	46 min
Jun 6, 8:16 PM MDT	Severe Thunderstorm Warning	CYS	29 min
Jun 6, 8:39 PM MDT	Areal Flood Advisory	CYS	3 hr
Jun 6, 8:53 PM MDT	Severe Thunderstorm Warning	CYS	52 min
Jun 9, 1:10 PM MDT	High Wind Watch	CYS	24 hr
Jun 10, 12:59 PM MDT	High Wind Warning	CYS	17 hr
Jun 15, 1:10 PM MDT	Special Weather Statement	CYS	50 min
Jun 15, 1:20 PM MDT	Severe Thunderstorm Warning	CYS	23 min
Jun 15, 2:30 PM MDT	Special Weather Statement	CYS	45 min
Jun 15, 3:05 PM MDT	Severe Thunderstorm Warning	CYS	40 min
Jun 15, 3:43 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Jun 15, 4:47 PM MDT	Mesoscale Discussion	SPC	88 min
Jun 16, 1:47 AM MDT	Flash Flood Watch	CYS	37 hr
Jun 16, 2:08 PM MDT	Special Weather Statement	CYS	22 min
Jun 16, 2:12 PM MDT	Special Weather Statement	BOU	33 min
Jun 16, 2:25 PM MDT	Severe Thunderstorm Warning	CYS	28 min
Jun 16, 2:54 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 16, 3:33 PM MDT	Areal Flood Advisory	CYS	3 hr
Jun 16, 4:30 PM MDT	Special Weather Statement	CYS	30 min
Jun 16, 5:00 PM MDT	Special Weather Statement	CYS	45 min
Jun 16, 5:14 PM MDT	Mesoscale Discussion	SPC	91 min
Jun 16, 5:40 PM MDT	Severe Thunderstorm Warning	CYS	35 min
Jun 16, 6:10 PM MDT	Severe Thunderstorm Warning	CYS	18 min
Jun 18, 3:06 PM MDT	Mesoscale Discussion	SPC	114 min
Jun 18, 6:37 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 18, 6:48 PM MDT	Severe Thunderstorm Warning	CYS	42 min
Jun 18, 7:30 PM MDT	Special Weather Statement	CYS	45 min
Jun 18, 8:31 PM MDT	Mesoscale Discussion	SPC	119 min
Jun 19, 12:38 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 19, 1:03 PM MDT	Special Weather Statement	CYS	42 min
Jun 19, 1:24 PM MDT	Severe Thunderstorm Warning	CYS	34 min
Jun 19, 2:01 PM MDT	Tornado Warning	CYS	44 min
Jun 19, 2:42 PM MDT	Tornado Warning	CYS	48 min
Jun 19, 3:20 PM MDT	Severe Thunderstorm Warning	CYS	40 min
Jun 19, 3:29 PM MDT	Severe Thunderstorm Warning	CYS	61 min
Jun 19, 3:41 PM MDT	Severe Thunderstorm Warning	CYS	49 min
Jun 19, 4:07 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jun 19, 4:38 PM MDT	Severe Thunderstorm Warning	CYS	52 min
Jun 21, 5:25 PM MDT	Special Weather Statement	CYS	50 min
Jun 21, 5:54 PM MDT	Severe Thunderstorm Warning	CYS	40 min
Jun 21, 6:22 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jun 21, 6:43 PM MDT	Mesoscale Discussion	SPC	3 hr
Jun 21, 6:49 PM MDT	Special Weather Statement	CYS	11 min
Jun 21, 6:56 PM MDT	Severe Thunderstorm Warning	CYS	14 min
Jun 22, 6:29 PM MDT	Special Weather Statement	CYS	31 min
Jun 22, 6:36 PM MDT	Severe Thunderstorm Warning	CYS	24 min
Jun 22, 6:57 PM MDT	Severe Thunderstorm Warning	CYS	33 min
Jun 29, 4:31 PM MDT	Mesoscale Discussion	SPC	89 min
Jun 29, 5:19 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 30, 1:03 PM MDT	Mesoscale Discussion	SPC	87 min
Jun 30, 1:33 PM MDT	Special Weather Statement	CYS	42 min
Jun 30, 2:03 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 30, 2:34 PM MDT	Special Weather Statement	CYS	41 min
Jul 3, 12:34 PM MDT	Special Weather Statement	CYS	41 min
Jul 3, 1:27 PM MDT	Special Weather Statement	CYS	48 min
Jul 3, 2:11 PM MDT	Special Weather Statement	CYS	49 min
Jul 3, 2:39 PM MDT	Severe Thunderstorm Warning	CYS	51 min
Jul 4, 1:51 PM MDT	Mesoscale Discussion	SPC	54 min
Jul 4, 7:02 PM MDT	Special Weather Statement	CYS	43 min
Jul 4, 7:55 PM MDT	Special Weather Statement	CYS	50 min
Jul 7, 1:30 PM MDT	Special Weather Statement	CYS	45 min
Jul 16, 3:39 PM MDT	Special Weather Statement	CYS	36 min
Jul 17, 2:25 PM MDT	Special Weather Statement	CYS	50 min
Jul 17, 2:47 PM MDT	Mesoscale Discussion	SPC	118 min
Jul 17, 2:57 PM MDT	Special Weather Statement	CYS	48 min
Jul 17, 3:06 PM MDT	Special Weather Statement	CYS	39 min
Jul 17, 3:09 PM MDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 17, 3:30 PM MDT	Severe Thunderstorm Warning	CYS	45 min
Jul 17, 5:49 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 21, 12:50 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 21, 3:25 PM MDT	Special Weather Statement	CYS	35 min
Jul 21, 3:39 PM MDT	Special Weather Statement	CYS	51 min
Jul 21, 3:55 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jul 21, 4:17 PM MDT	Flash Flood Warning	CYS	3 hr
Jul 21, 6:17 PM MDT	Special Weather Statement	CYS	43 min
Jul 23, 6:42 PM MDT	Special Weather Statement	CYS	63 min
Jul 24, 2:59 PM MDT	Special Weather Statement	CYS	46 min
Jul 24, 3:31 PM MDT	Severe Thunderstorm Warning	CYS	29 min
Jul 24, 3:44 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 3:50 PM MDT	Special Weather Statement	CYS	40 min
Jul 24, 3:53 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Jul 24, 5:19 PM MDT	Special Weather Statement	CYS	41 min
Jul 24, 5:29 PM MDT	Severe Thunderstorm Warning	CYS	46 min
Jul 25, 10:11 AM MDT	Flash Flood Watch	CYS	11 hr
Jul 25, 12:48 PM MDT	Mesoscale Discussion	SPC	57 min
Jul 25, 1:22 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 25, 3:10 PM MDT	Severe Thunderstorm Warning	CYS	50 min
Jul 25, 3:17 PM MDT	Severe Thunderstorm Warning	CYS	43 min
Jul 25, 3:44 PM MDT	Severe Thunderstorm Warning	CYS	46 min
Jul 25, 4:12 PM MDT	Flash Flood Warning	CYS	117 min
Jul 25, 4:24 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jul 25, 5:08 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 9:23 AM MDT	Flash Flood Watch	CYS	11 hr
Jul 26, 12:49 PM MDT	Mesoscale Discussion	SPC	56 min
Jul 26, 1:49 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 26, 2:19 PM MDT	Special Weather Statement	CYS	41 min
Jul 26, 4:46 PM MDT	Severe Thunderstorm Warning	CYS	44 min
Jul 26, 5:28 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Jul 26, 5:49 PM MDT	Severe Thunderstorm Warning	CYS	41 min
Jul 26, 6:05 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Jul 26, 6:07 PM MDT	Mesoscale Discussion	SPC	113 min
Jul 26, 6:14 PM MDT	Flash Flood Warning	CYS	76 min
Jul 26, 6:24 PM MDT	Severe Thunderstorm Warning	CYS	51 min
Jul 27, 12:35 PM MDT	Mesoscale Discussion	SPC	85 min
Jul 27, 1:04 PM MDT	Tornado Watch	SPC	8 hr
Jul 27, 2:24 PM MDT	Severe Thunderstorm Warning	CYS	51 min
Jul 27, 2:52 PM MDT	Special Weather Statement	CYS	38 min
Jul 27, 2:58 PM MDT	Severe Thunderstorm Warning	CYS	24 min
Jul 27, 4:57 PM MDT	Severe Thunderstorm Warning	CYS	33 min
Jul 27, 5:29 PM MDT	Severe Thunderstorm Warning	CYS	46 min
Jul 28, 2:17 PM MDT	Mesoscale Discussion	SPC	88 min
Jul 28, 2:34 PM MDT	Tornado Watch	SPC	7 hr
Jul 28, 3:55 PM MDT	Severe Thunderstorm Warning	CYS	35 min
Jul 28, 4:29 PM MDT	Severe Thunderstorm Warning	CYS	46 min
Jul 28, 6:38 PM MDT	Mesoscale Discussion	SPC	97 min
Jul 28, 6:58 PM MDT	Special Weather Statement	CYS	32 min
Jul 28, 7:05 PM MDT	Severe Thunderstorm Warning	CYS	40 min
Jul 29, 12:46 PM MDT	Mesoscale Discussion	SPC	59 min
Jul 29, 1:07 PM MDT	Tornado Watch	SPC	8 hr
Jul 29, 1:25 PM MDT	Severe Thunderstorm Warning	CYS	50 min
Jul 29, 1:39 PM MDT	Severe Thunderstorm Warning	CYS	51 min
Jul 29, 1:44 PM MDT	Tornado Warning	CYS	14 min
Jul 29, 1:57 PM MDT	Tornado Warning Tornado observed	CYS	33 min
Jul 29, 2:11 PM MDT	Severe Thunderstorm Warning	CYS	49 min
Jul 29, 2:20 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Jul 29, 2:20 PM MDT	Mesoscale Discussion	SPC	55 min
Jul 29, 2:26 PM MDT	Tornado Warning	CYS	34 min
Jul 29, 2:28 PM MDT	Tornado Warning	CYS	47 min
Jul 29, 2:53 PM MDT	Severe Thunderstorm Warning	CYS	52 min
Jul 29, 2:54 PM MDT	Tornado Warning	CYS	36 min
Jul 29, 3:14 PM MDT	Tornado Warning	CYS	29 min
Jul 29, 3:29 PM MDT	Severe Thunderstorm Warning	CYS	61 min
Jul 29, 3:41 PM MDT	Severe Thunderstorm Warning	CYS	30 min
Jul 29, 3:46 PM MDT	Flash Flood Warning	CYS	3 hr
Jul 29, 4:17 PM MDT	Tornado Warning	CYS	43 min
Jul 29, 4:21 PM MDT	Severe Thunderstorm Warning	CYS	39 min
Jul 29, 4:55 PM MDT	Severe Thunderstorm Warning	CYS	19 min
Jul 29, 5:03 PM MDT	Special Weather Statement	CYS	42 min
Jul 29, 5:23 PM MDT	Mesoscale Discussion	SPC	67 min
Jul 29, 6:12 PM MDT	Severe Thunderstorm Warning	CYS	14 min
Aug 4, 1:58 PM MDT	Mesoscale Discussion	SPC	62 min
Aug 5, 11:45 AM MDT	Mesoscale Discussion	SPC	2 hr
Aug 5, 12:06 PM MDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 5, 12:24 PM MDT	Severe Thunderstorm Warning	CYS	36 min
Aug 5, 1:01 PM MDT	Severe Thunderstorm Warning	CYS	29 min
Aug 5, 1:30 PM MDT	Severe Thunderstorm Warning	CYS	30 min
Aug 5, 2:41 PM MDT	Mesoscale Discussion	SPC	94 min
Aug 5, 4:54 PM MDT	Special Weather Statement	CYS	51 min
Aug 5, 5:20 PM MDT	Special Weather Statement	CYS	25 min
Aug 5, 5:40 PM MDT	Special Weather Statement	CYS	35 min
Aug 5, 6:05 PM MDT	Mesoscale Discussion	SPC	115 min
Aug 5, 8:32 PM MDT	Special Weather Statement	CYS	43 min
Aug 6, 12:21 AM MDT	Special Weather Statement	CYS	24 min
Aug 6, 1:51 PM MDT	Special Weather Statement	CYS	39 min
Aug 6, 1:58 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Aug 6, 2:02 PM MDT	Mesoscale Discussion	SPC	88 min
Aug 6, 2:17 PM MDT	Severe Thunderstorm Warning	CYS	43 min
Aug 6, 2:37 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 6, 2:49 PM MDT	Special Weather Statement	CYS	41 min
Aug 6, 3:42 PM MDT	Special Weather Statement	CYS	48 min
Aug 6, 5:24 PM MDT	Mesoscale Discussion	SPC	66 min
Aug 6, 6:05 PM MDT	Special Weather Statement	CYS	25 min
Aug 6, 6:29 PM MDT	Special Weather Statement	CYS	31 min
Aug 6, 8:06 PM MDT	Mesoscale Discussion	SPC	54 min
Aug 7, 1:46 PM MDT	Special Weather Statement	CYS	44 min
Aug 7, 2:14 PM MDT	Special Weather Statement	CYS	46 min
Aug 7, 3:12 PM MDT	Special Weather Statement	CYS	33 min
Aug 7, 3:25 PM MDT	Special Weather Statement	CYS	50 min
Aug 7, 3:35 PM MDT	Special Weather Statement	CYS	25 min
Aug 7, 3:57 PM MDT	Areal Flood Advisory	CYS	3 hr
Aug 7, 4:01 PM MDT	Special Weather Statement	CYS	29 min
Aug 7, 4:05 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Aug 7, 4:06 PM MDT	Flash Flood Warning	CYS	3 hr
Aug 7, 4:09 PM MDT	Special Weather Statement	CYS	51 min
Aug 7, 4:27 PM MDT	Severe Thunderstorm Warning	CYS	48 min
Aug 7, 4:50 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Aug 7, 5:06 PM MDT	Special Weather Statement	CYS	39 min
Aug 7, 5:11 PM MDT	Special Weather Statement	CYS	34 min
Aug 7, 8:13 PM MDT	Tornado Warning	CYS	32 min
Aug 7, 8:27 PM MDT	Tornado Warning	CYS	33 min
Aug 7, 8:45 PM MDT	Severe Thunderstorm Warning	CYS	30 min
Aug 7, 9:14 PM MDT	Severe Thunderstorm Warning	CYS	31 min
Aug 7, 9:41 PM MDT	Severe Thunderstorm Warning	CYS	34 min
Aug 14, 1:29 PM MDT	Special Weather Statement	CYS	46 min
Aug 14, 2:05 PM MDT	Severe Thunderstorm Warning	CYS	55 min
Aug 14, 2:28 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 14, 2:33 PM MDT	Severe Thunderstorm Warning	CYS	75 min
Aug 14, 2:50 PM MDT	Areal Flood Advisory	CYS	3 hr
Aug 14, 3:22 PM MDT	Special Weather Statement	CYS	38 min
Aug 14, 3:33 PM MDT	Severe Thunderstorm Warning	CYS	39 min
Aug 17, 1:47 PM MDT	Special Weather Statement	CYS	43 min
Aug 17, 1:57 PM MDT	Severe Thunderstorm Warning	CYS	63 min
Aug 17, 2:56 PM MDT	Mesoscale Discussion	SPC	2 hr
Aug 17, 3:03 PM MDT	Special Weather Statement	CYS	42 min
Aug 18, 6:11 PM MDT	Special Weather Statement	CYS	49 min
Aug 18, 6:57 PM MDT	Special Weather Statement	CYS	48 min
Aug 22, 3:00 AM MDT	Dense Fog Advisory	CYS	7 hr
Aug 22, 7:11 PM MDT	Special Weather Statement	CYS	34 min
Aug 27, 1:44 AM MDT	High Wind Warning	CYS	16 hr
Sep 4, 11:46 PM MDT	Dense Fog Advisory	CYS	9 hr
Sep 11, 3:31 PM MDT	Special Weather Statement	CYS	29 min
Sep 24, 2:24 PM MDT	Mesoscale Discussion	SPC	3 hr
Sep 25, 3:15 AM MDT	Frost Advisory	CYS	30 hr
Sep 28, 7:28 AM MDT	Dense Fog Advisory	CYS	19 hr
Sep 30, 3:14 AM MDT	Dense Fog Advisory	CYS	6 hr
Oct 2, 2:06 AM MDT	High Wind Watch	CYS	19 hr
Oct 2, 8:53 PM MDT	High Wind Warning	CYS	18 hr
Oct 4, 1:37 PM MDT	Severe Thunderstorm Warning	CYS	53 min
Oct 4, 2:08 PM MDT	Severe Thunderstorm Warning	CYS	36 min
Oct 5, 11:57 PM MDT	Freezing Fog Advisory	CYS	11 hr
Oct 6, 4:53 AM MDT	Winter Storm Watch	CYS	10 hr
Oct 6, 11:24 AM MDT	Dense Fog Advisory	CYS	4 hr
Oct 6, 3:05 PM MDT	Winter Storm Watch	CYS	24 hr
Oct 6, 3:05 PM MDT	Winter Weather Advisory	CYS	59 hr
Oct 7, 2:14 AM MDT	Dense Fog Advisory	CYS	25 hr
Oct 10, 6:38 AM MDT	Freezing Fog Advisory	CYS	5 hr
Oct 11, 12:38 AM MDT	Dense Fog Advisory	CYS	8 hr
Oct 12, 2:13 PM MDT	Winter Weather Advisory	CYS	40 hr
Oct 13, 3:12 AM MDT	Winter Storm Warning	CYS	27 hr
Oct 13, 6:02 PM MDT	Mesoscale Discussion	SPC	6 hr
Oct 25, 1:02 PM MDT	High Wind Watch	CYS	13 hr
Oct 26, 1:45 AM MDT	High Wind Warning	CYS	40 hr
Nov 1, 3:20 AM MDT	High Wind Warning	CYS	45 hr
Nov 1, 1:41 PM MDT	High Wind Watch	CYS	11 hr
Nov 3, 1:27 AM MDT	High Wind Watch	CYS	24 hr
Nov 4, 1:16 AM MDT	High Wind Warning	CYS	19 hr
Nov 8, 2:28 AM MST	High Wind Watch	CYS	10 hr
Nov 8, 12:40 PM MST	High Wind Warning	CYS	43 hr
Nov 10, 1:40 PM MST	Winter Weather Advisory	CYS	24 hr
Nov 14, 2:05 PM MST	Winter Storm Watch	CYS	30 hr
Nov 15, 12:05 PM MST	High Wind Warning	CYS	23 hr
Nov 15, 12:05 PM MST	Winter Storm Warning	CYS	56 hr
Nov 15, 12:05 PM MST	Winter Weather Advisory	CYS	56 hr
Nov 18, 8:15 AM MST	High Wind Warning	CYS	9 hr
Nov 21, 2:38 AM MST	High Wind Watch	CYS	35 hr
Nov 21, 2:18 PM MST	High Wind Warning	CYS	3 days
Nov 21, 2:29 PM MST	Winter Storm Watch	CYS	60 hr
Nov 22, 1:52 PM MST	Winter Storm Warning	CYS	61 hr
Nov 23, 2:45 PM MST	Winter Weather Advisory	CYS	36 hr
Nov 24, 7:30 PM MST	Snow Squall Warning	CYS	45 min
Nov 24, 8:15 PM MST	Mesoscale Discussion	SPC	2 hr
Nov 24, 8:16 PM MST	Snow Squall Warning	CYS	44 min
Nov 24, 9:06 PM MST	Snow Squall Warning	CYS	54 min
Nov 27, 12:05 AM MST	High Wind Warning	CYS	29 hr
Nov 28, 2:03 PM MST	Winter Weather Advisory	CYS	4 days
Dec 4, 10:53 AM MST	High Wind Warning	CYS	15 hr
Dec 5, 10:46 AM MST	Winter Weather Advisory	CYS	17 hr
Dec 10, 10:08 AM MST	High Wind Watch	CYS	15 hr
Dec 10, 10:08 AM MST	High Wind Warning	CYS	3 days
Dec 13, 12:54 PM MST	High Wind Watch	CYS	14 hr
Dec 14, 2:26 AM MST	High Wind Warning	CYS	39 hr
Dec 17, 3:11 AM MST	High Wind Watch	CYS	11 hr
Dec 17, 2:01 PM MST	High Wind Watch	CYS	24 hr
Dec 17, 2:01 PM MST	High Wind Warning	CYS	51 hr
Dec 20, 12:30 AM MST	High Wind Watch	CYS	12 hr
Dec 20, 12:01 PM MST	High Wind Warning	CYS	30 hr
Dec 21, 7:20 PM MST	High Wind Warning	CYS	4 hr
Dec 25, 3:10 PM MST	Winter Weather Advisory	CYS	53 hr
Dec 28, 2:14 AM MST	High Wind Watch	CYS	12 hr
Dec 28, 2:38 PM MST	High Wind Warning	CYS	53 hr
Dec 29, 6:37 PM MST	High Wind Watch	CYS	8 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	84
Tornado Warning	18
Severe Thunderstorm Watch	15
Tornado Watch	3
Mesoscale Discussion	51
Special Weather Statement	99
Flooding
Areal Flood Warning	2
Flash Flood Warning	9
Flash Flood Watch	5
Flood Watch	1
Areal Flood Advisory	7
Winter
Snow Squall Warning	3
Winter Storm Warning	8
Winter Storm Watch	9
Winter Weather Advisory	23
Cold
Wind Chill Warning	1
Frost Advisory	1
Wind Chill Advisory	1
Wind and dust
High Wind Warning	45
High Wind Watch	38
Fog and smoke
Dense Fog Advisory	14
Freezing 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 2017 2019

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.