Alert archive / Wyoming / Laramie County

Weather alerts in Laramie County, Wyoming, 2012

217 weather alerts in 2012, 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 2012. Tap one for its archive.

Alerts: 217
Warnings: 78
Watches: 43
Advisories: 19
Busiest month: June79 alerts
Busiest day: June 7, 201230 alerts

Over time

By month

Warning verification

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

2 of 3 tornado warnings covering Laramie County in 2012 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 9 minutes after it went out.

Laramie County, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	2	33%	2	100%	9 min
Severe thunderstorm warnings	25	13	48%	46	85%	24 min
Flash flood warnings	5	0	100%	0

Each office's whole area, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	9	4	56%	9	78%	19 min
NWS Cheyenne, WY: severe thunderstorm warnings	83	34	59%	108	74%	22 min
NWS Cheyenne, WY: flash flood warnings	12	6	50%	11	73%	64 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, 8:47 PM MST	High Wind Watch	CYS	17 hr
Jan 2, 2:08 PM MST	High Wind Warning	CYS	17 hr
Jan 11, 3:51 AM MST	Wind Chill Advisory	CYS	29 hr
Jan 13, 1:27 PM MST	High Wind Watch	CYS	14 hr
Jan 13, 9:26 PM MST	High Wind Warning	CYS	36 hr
Jan 15, 2:02 PM MST	High Wind Watch	CYS	24 hr
Jan 16, 3:29 AM MST	High Wind Watch	CYS	10 hr
Jan 16, 1:34 PM MST	High Wind Watch	CYS	25 hr
Jan 16, 1:34 PM MST	High Wind Warning	CYS	4 days
Jan 20, 3:04 AM MST	High Wind Watch	CYS	12 hr
Jan 20, 3:05 PM MST	High Wind Warning	CYS	26 hr
Jan 21, 9:17 AM MST	High Wind Watch	CYS	6 hr
Jan 21, 3:09 PM MST	High Wind Warning	CYS	26 hr
Jan 24, 3:45 AM MST	High Wind Watch	CYS	8 hr
Jan 24, 12:10 PM MST	High Wind Warning	CYS	38 hr
Jan 26, 3:35 AM MST	High Wind Watch	CYS	6 hr
Jan 26, 9:37 AM MST	High Wind Warning	CYS	11 hr
Jan 27, 3:07 PM MST	High Wind Watch	CYS	19 hr
Jan 28, 2:15 AM MST	High Wind Warning	CYS	32 hr
Feb 1, 2:32 AM MST	Winter Storm Watch	CYS	35 hr
Feb 2, 3:26 AM MST	Winter Storm Warning	CYS	44 hr
Feb 2, 3:26 AM MST	Winter Weather Advisory	CYS	44 hr
Feb 2, 5:08 PM MST	Mesoscale Discussion	SPC	4 hr
Feb 9, 2:13 PM MST	Winter Weather Advisory	CYS	38 hr
Feb 20, 4:03 AM MST	High Wind Watch	CYS	10 hr
Feb 20, 4:03 AM MST	High Wind Warning	CYS	70 hr
Feb 20, 2:31 PM MST	High Wind Watch	CYS	24 hr
Feb 24, 1:37 AM MST	High Wind Watch	CYS	13 hr
Feb 24, 2:58 PM MST	High Wind Warning	CYS	46 hr
Feb 27, 2:31 PM MST	High Wind Watch	CYS	14 hr
Feb 28, 4:48 AM MST	High Wind Warning	CYS	32 hr
Feb 29, 1:04 PM MST	High Wind Warning	CYS	2 hr
Mar 1, 3:12 PM MST	High Wind Watch	CYS	23 hr
Mar 2, 2:41 PM MST	High Wind Warning	CYS	44 hr
Mar 5, 2:51 AM MST	High Wind Warning	CYS	29 hr
Mar 13, 11:26 AM MDT	High Wind Warning	CYS	10 hr
Mar 25, 3:44 AM MDT	High Wind Watch	CYS	11 hr
Mar 25, 2:30 PM MDT	High Wind Warning	CYS	37 hr
Apr 5, 3:34 PM MDT	High Wind Watch	CYS	12 hr
Apr 6, 3:18 AM MDT	High Wind Warning	CYS	18 hr
Apr 7, 1:37 AM MDT	High Wind Warning	CYS	3 hr
Apr 11, 1:13 AM MDT	Dense Fog Advisory	CYS	11 hr
Apr 13, 4:31 AM MDT	Winter Storm Watch	CYS	24 hr
Apr 13, 9:31 PM MDT	Winter Weather Advisory	CYS	38 hr
Apr 14, 4:48 AM MDT	Winter Storm Warning	CYS	9 hr
Apr 19, 2:02 PM MDT	Special Weather Statement	CYS	58 min
Apr 19, 2:32 PM MDT	Special Weather Statement	CYS	58 min
Apr 19, 2:58 PM MDT	Special Weather Statement	CYS	32 min
Apr 26, 3:37 AM MDT	High Wind Watch	CYS	11 hr
Apr 26, 2:39 PM MDT	High Wind Warning	CYS	30 hr
Apr 26, 2:47 PM MDT	Mesoscale Discussion	SPC	58 min
May 5, 2:10 PM MDT	Special Weather Statement	CYS	50 min
May 5, 2:54 PM MDT	Severe Thunderstorm Warning	CYS	39 min
May 5, 3:49 PM MDT	Severe Thunderstorm Warning	CYS	41 min
May 5, 4:49 PM MDT	Severe Thunderstorm Warning	CYS	41 min
May 5, 5:13 PM MDT	Severe Thunderstorm Warning	CYS	47 min
May 5, 5:49 PM MDT	Severe Thunderstorm Warning	CYS	41 min
May 11, 9:04 PM MDT	Dense Fog Advisory	CYS	8 hr
May 13, 2:58 AM MDT	Dense Fog Advisory	CYS	6 hr
May 25, 2:06 AM MDT	High Wind Watch	CYS	24 hr
May 25, 7:51 AM MDT	Dense Fog Advisory	CYS	7 hr
May 25, 11:27 PM MDT	Dense Fog Advisory	CYS	10 hr
May 26, 2:35 AM MDT	High Wind Warning	CYS	41 hr
May 26, 2:55 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 2, 2:55 PM MDT	Special Weather Statement	CYS	50 min
Jun 2, 3:27 PM MDT	Special Weather Statement	CYS	48 min
Jun 3, 1:03 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 3, 2:01 PM MDT	Special Weather Statement	CYS	44 min
Jun 3, 2:03 PM MDT	Special Weather Statement	CYS	42 min
Jun 3, 2:49 PM MDT	Special Weather Statement	CYS	41 min
Jun 3, 3:07 PM MDT	Special Weather Statement	CYS	53 min
Jun 6, 12:54 PM MDT	Mesoscale Discussion	SPC	2 hr
Jun 6, 3:01 PM MDT	Tornado Watch	SPC	8 hr
Jun 6, 3:26 PM MDT	Severe Thunderstorm Warning	CYS	64 min
Jun 6, 3:39 PM MDT	Severe Thunderstorm Warning	CYS	51 min
Jun 6, 3:57 PM MDT	Special Weather Statement	CYS	48 min
Jun 6, 4:02 PM MDT	Severe Thunderstorm Warning	CYS	58 min
Jun 6, 4:27 PM MDT	Severe Thunderstorm Warning	CYS	35 min
Jun 6, 4:48 PM MDT	Flash Flood Warning	CYS	4 hr
Jun 6, 4:52 PM MDT	Severe Thunderstorm Warning	CYS	53 min
Jun 6, 5:33 PM MDT	Flash Flood Warning	CYS	3 hr
Jun 6, 5:47 PM MDT	Severe Thunderstorm Warning	CYS	58 min
Jun 6, 6:17 PM MDT	Severe Thunderstorm Warning	CYS	58 min
Jun 6, 6:47 PM MDT	Mesoscale Discussion	SPC	58 min
Jun 6, 6:51 PM MDT	Special Weather Statement	CYS	54 min
Jun 6, 7:52 PM MDT	Special Weather Statement	CYS	53 min
Jun 6, 8:37 PM MDT	Mesoscale Discussion	SPC	23 min
Jun 6, 8:53 PM MDT	Special Weather Statement	CYS	67 min
Jun 6, 10:45 PM MDT	Special Weather Statement	CYS	60 min
Jun 6, 10:48 PM MDT	Areal Flood Advisory	CYS	3 hr
Jun 6, 11:25 PM MDT	Flash Flood Warning	CYS	2 hr
Jun 7, 9:45 AM MDT	Special Weather Statement	CYS	90 min
Jun 7, 10:59 AM MDT	Mesoscale Discussion	SPC	91 min
Jun 7, 11:46 AM MDT	Tornado Watch	SPC	10 hr
Jun 7, 12:00 PM MDT	Flash Flood Watch	CYS	9 hr
Jun 7, 1:59 PM MDT	Mesoscale Discussion	SPC	91 min
Jun 7, 2:49 PM MDT	Special Weather Statement	CYS	56 min
Jun 7, 3:05 PM MDT	Severe Thunderstorm Warning	CYS	55 min
Jun 7, 3:22 PM MDT	Special Weather Statement	CYS	38 min
Jun 7, 3:58 PM MDT	Special Weather Statement	CYS	47 min
Jun 7, 4:00 PM MDT	Special Weather Statement	CYS	45 min
Jun 7, 4:15 PM MDT	Severe Thunderstorm Warning	CYS	45 min
Jun 7, 4:22 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jun 7, 4:29 PM MDT	Tornado Warning	CYS	46 min
Jun 7, 4:52 PM MDT	Severe Thunderstorm Warning	CYS	53 min
Jun 7, 4:59 PM MDT	Severe Thunderstorm Warning	CYS	61 min
Jun 7, 5:16 PM MDT	Tornado Warning	CYS	44 min
Jun 7, 5:23 PM MDT	Flash Flood Warning	CYS	2 hr
Jun 7, 5:29 PM MDT	Flash Flood Warning	CYS	2 hr
Jun 7, 5:52 PM MDT	Tornado Warning	CYS	38 min
Jun 7, 5:52 PM MDT	Mesoscale Discussion	SPC	53 min
Jun 7, 5:57 PM MDT	Severe Thunderstorm Warning	CYS	63 min
Jun 7, 6:23 PM MDT	Severe Thunderstorm Warning	CYS	41 min
Jun 7, 6:36 PM MDT	Severe Thunderstorm Warning	CYS	20 min
Jun 7, 6:39 PM MDT	Special Weather Statement	CYS	51 min
Jun 7, 6:49 PM MDT	Severe Thunderstorm Warning	CYS	56 min
Jun 7, 7:03 PM MDT	Severe Thunderstorm Warning	CYS	31 min
Jun 7, 7:32 PM MDT	Severe Thunderstorm Warning	CYS	43 min
Jun 7, 8:06 PM MDT	Special Weather Statement	CYS	39 min
Jun 7, 8:40 PM MDT	Severe Thunderstorm Warning	CYS	34 min
Jun 7, 9:49 PM MDT	Special Weather Statement	CYS	41 min
Jun 7, 10:36 PM MDT	Special Weather Statement	CYS	39 min
Jun 10, 8:23 AM MDT	High Wind Warning	CYS	4 hr
Jun 14, 3:57 PM MDT	Special Weather Statement	CYS	48 min
Jun 15, 1:35 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 17, 12:38 PM MDT	High Wind Warning	CYS	14 hr
Jun 22, 2:59 PM MDT	Mesoscale Discussion	SPC	91 min
Jun 24, 5:47 PM MDT	Special Weather Statement	CYS	28 min
Jun 24, 7:35 PM MDT	Special Weather Statement	CYS	25 min
Jun 24, 9:52 PM MDT	Special Weather Statement	CYS	23 min
Jun 24, 11:00 PM MDT	Special Weather Statement	CYS	15 min
Jun 25, 12:05 AM MDT	Special Weather Statement	CYS	40 min
Jun 25, 12:24 AM MDT	Special Weather Statement	CYS	66 min
Jun 26, 2:06 PM MDT	Special Weather Statement	CYS	24 min
Jun 26, 4:23 PM MDT	Special Weather Statement	CYS	37 min
Jun 26, 8:20 PM MDT	Special Weather Statement	CYS	25 min
Jun 26, 8:44 PM MDT	Special Weather Statement	CYS	31 min
Jun 27, 1:25 PM MDT	Mesoscale Discussion	SPC	3 hr
Jun 27, 2:32 PM MDT	Special Weather Statement	CYS	28 min
Jun 27, 4:41 PM MDT	Special Weather Statement	CYS	34 min
Jun 27, 7:50 PM MDT	Severe Thunderstorm Warning	CYS	21 min
Jun 28, 2:30 PM MDT	Special Weather Statement	CYS	30 min
Jun 29, 6:54 PM MDT	Special Weather Statement	CYS	36 min
Jul 2, 2:33 PM MDT	Special Weather Statement	CYS	42 min
Jul 2, 3:33 PM MDT	Special Weather Statement	CYS	27 min
Jul 5, 2:40 PM MDT	Mesoscale Discussion	SPC	95 min
Jul 5, 6:35 PM MDT	Special Weather Statement	CYS	40 min
Jul 6, 1:37 PM MDT	Flash Flood Watch	CYS	50 hr
Jul 7, 3:42 PM MDT	Special Weather Statement	CYS	33 min
Jul 7, 4:16 PM MDT	Special Weather Statement	CYS	29 min
Jul 11, 3:59 PM MDT	Special Weather Statement	CYS	61 min
Jul 11, 4:43 PM MDT	Special Weather Statement	CYS	47 min
Jul 16, 4:26 PM MDT	Special Weather Statement	CYS	49 min
Jul 21, 5:03 PM MDT	Special Weather Statement	CYS	57 min
Jul 21, 5:05 PM MDT	Special Weather Statement	CYS	55 min
Jul 21, 5:11 PM MDT	Special Weather Statement	CYS	64 min
Jul 21, 5:12 PM MDT	Mesoscale Discussion	SPC	78 min
Jul 22, 3:34 PM MDT	Special Weather Statement	CYS	26 min
Jul 30, 4:10 PM MDT	Special Weather Statement	CYS	35 min
Jul 31, 12:29 PM MDT	Special Weather Statement	CYS	31 min
Jul 31, 12:56 PM MDT	Special Weather Statement	CYS	34 min
Jul 31, 1:25 PM MDT	Special Weather Statement	CYS	35 min
Aug 11, 3:33 PM MDT	Special Weather Statement	CYS	57 min
Aug 11, 3:46 PM MDT	Special Weather Statement	CYS	29 min
Aug 11, 4:12 PM MDT	Special Weather Statement	CYS	33 min
Aug 11, 4:13 PM MDT	Special Weather Statement	CYS	1 min
Aug 18, 12:45 AM MDT	Special Weather Statement	CYS	15 min
Aug 28, 3:32 PM MDT	Special Weather Statement	CYS	43 min
Sep 7, 2:22 PM MDT	Special Weather Statement	CYS	68 min
Sep 7, 2:46 PM MDT	Special Weather Statement	CYS	59 min
Oct 3, 2:49 AM MDT	Freeze Watch	CYS	12 hr
Oct 3, 2:20 PM MDT	Freeze Warning	CYS	19 hr
Oct 4, 1:47 PM MDT	Winter Storm Watch	CYS	20 hr
Oct 5, 9:21 AM MDT	Winter Weather Advisory	CYS	26 hr
Oct 9, 9:50 AM MDT	Dense Fog Advisory	CYS	2 hr
Oct 11, 3:00 AM MDT	High Wind Watch	CYS	23 hr
Oct 14, 3:10 PM MDT	High Wind Watch	CYS	24 hr
Oct 15, 3:34 PM MDT	High Wind Watch	CYS	37 hr
Oct 15, 3:34 PM MDT	High Wind Warning	CYS	29 hr
Oct 17, 4:16 AM MDT	High Wind Warning	CYS	38 hr
Oct 22, 3:24 AM MDT	High Wind Watch	CYS	7 hr
Oct 22, 10:37 AM MDT	High Wind Warning	CYS	22 hr
Oct 23, 3:53 AM MDT	Winter Storm Watch	CYS	10 hr
Oct 23, 1:47 PM MDT	Winter Weather Advisory	CYS	36 hr
Oct 28, 7:39 AM MDT	High Wind Warning	CYS	10 hr
Nov 10, 4:07 AM MST	Dense Fog Advisory	CYS	5 hr
Nov 10, 9:33 PM MST	High Wind Watch	CYS	23 hr
Nov 11, 12:57 PM MST	High Wind Warning	CYS	22 hr
Nov 20, 11:55 AM MST	High Wind Watch	CYS	15 hr
Nov 21, 2:52 AM MST	High Wind Warning	CYS	36 hr
Nov 24, 9:59 AM MST	High Wind Warning	CYS	7 hr
Nov 27, 10:07 AM MST	High Wind Warning	CYS	7 hr
Nov 29, 2:54 AM MST	High Wind Watch	CYS	22 hr
Nov 30, 12:56 AM MST	High Wind Warning	CYS	34 hr
Dec 1, 3:22 AM MST	High Wind Watch	CYS	18 hr
Dec 1, 9:25 PM MST	High Wind Warning	CYS	32 hr
Dec 4, 4:19 AM MST	High Wind Watch	CYS	7 hr
Dec 4, 11:00 AM MST	High Wind Warning	CYS	32 hr
Dec 6, 4:20 AM MST	High Wind Watch	CYS	7 hr
Dec 6, 11:36 AM MST	High Wind Warning	CYS	19 hr
Dec 7, 11:21 AM MST	High Wind Warning	CYS	28 hr
Dec 9, 3:08 AM MST	High Wind Watch	CYS	12 hr
Dec 9, 3:10 PM MST	High Wind Warning	CYS	19 hr
Dec 9, 5:20 PM MST	Wind Chill Advisory	CYS	12 hr
Dec 11, 2:12 AM MST	High Wind Watch	CYS	10 hr
Dec 11, 11:43 AM MST	High Wind Warning	CYS	22 hr
Dec 15, 3:19 PM MST	High Wind Watch	CYS	22 hr
Dec 16, 5:15 AM MST	High Wind Warning	CYS	36 hr
Dec 16, 5:25 AM MST	Winter Storm Warning	CYS	3 days
Dec 18, 3:17 AM MST	Winter Weather Advisory	CYS	33 hr
Dec 19, 2:38 PM MST	Blizzard Warning	CYS	21 hr
Dec 19, 2:38 PM MST	Winter Weather Advisory	CYS	20 hr
Dec 20, 7:38 AM MST	High Wind Warning	CYS	7 hr
Dec 20, 11:57 AM MST	Winter Weather Advisory	CYS	3 hr
Dec 22, 1:52 AM MST	High Wind Watch	CYS	11 hr
Dec 22, 1:02 PM MST	High Wind Warning	CYS	21 hr
Dec 23, 12:53 PM MST	Winter Weather Advisory	CYS	44 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	25
Tornado Warning	3
Severe Thunderstorm Watch	1
Tornado Watch	2
Mesoscale Discussion	14
Special Weather Statement	63
Flooding
Flash Flood Warning	5
Flash Flood Watch	2
Areal Flood Advisory	1
Winter
Blizzard Warning	1
Winter Storm Warning	3
Winter Storm Watch	4
Winter Weather Advisory	9
Cold
Freeze Warning	1
Freeze Watch	1
Wind Chill Advisory	2
Wind and dust
High Wind Warning	40
High Wind Watch	33
Fog and smoke
Dense Fog Advisory	7

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2011 2013

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.