Weather alerts in Carbon County, Wyoming, 2025

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

Carbon County and its neighbors

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

Alerts: 231
Warnings: 100
Watches: 53
Advisories: 39
Busiest month: December35 alerts
Busiest day: August 2, 20256 alerts

Over time

By month

Warning verification

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

Carbon County, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	14	6	57%	20	25%	9 min
Flash flood warnings	0			0

Each office's whole area, 2025

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	14	5	64%	11	45%	9 min
NWS Cheyenne, WY: severe thunderstorm warnings	315	138	56%	270	81%	22 min
NWS Cheyenne, WY: flash flood warnings	5	4	20%	8	100%	12 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, 8:51 AM MST	High Wind Warning	CYS	11 hr
Jan 1, 1:12 PM MST	High Wind Watch	CYS	14 hr
Jan 1, 7:29 PM MST	Winter Weather Advisory	CYS	14 hr
Jan 2, 2:44 AM MST	High Wind Warning	CYS	32 hr
Jan 3, 1:20 PM MST	Winter Weather Advisory	CYS	46 hr
Jan 7, 12:58 PM MST	High Wind Watch	CYS	13 hr
Jan 7, 12:58 PM MST	High Wind Warning	CYS	31 hr
Jan 7, 1:18 PM MST	Winter Weather Advisory	CYS	52 hr
Jan 9, 2:23 AM MST	High Wind Watch	CYS	24 hr
Jan 9, 12:51 PM MST	High Wind Warning	CYS	48 hr
Jan 9, 2:08 PM MST	Winter Storm Watch	CYS	13 hr
Jan 10, 2:38 AM MST	High Wind Watch	CYS	26 hr
Jan 10, 2:46 AM MST	Winter Storm Warning	CYS	51 hr
Jan 10, 2:03 PM MST	Winter Weather Advisory	CYS	27 hr
Jan 15, 2:21 AM MST	High Wind Watch	CYS	24 hr
Jan 16, 2:37 AM MST	High Wind Warning	CYS	32 hr
Jan 16, 2:51 AM MST	Winter Weather Advisory	CYS	53 hr
Jan 17, 12:25 PM MST	Cold Weather Advisory	CYS	59 hr
Jan 19, 1:59 AM MST	Extreme Cold Warning	CYS	54 hr
Jan 19, 3:00 AM MST	High Wind Watch	CYS	47 hr
Jan 20, 1:36 AM MST	High Wind Warning	CYS	54 hr
Jan 22, 1:52 PM MST	High Wind Watch	CYS	12 hr
Jan 23, 1:57 AM MST	High Wind Warning	CYS	34 hr
Jan 23, 1:56 PM MST	Winter Weather Advisory	CYS	63 hr
Jan 30, 1:32 AM MST	High Wind Watch	CYS	36 hr
Jan 30, 1:22 PM MST	High Wind Warning	CYS	61 hr
Jan 31, 2:52 AM MST	Winter Storm Watch	CYS	11 hr
Jan 31, 1:50 PM MST	Winter Storm Warning	CYS	45 hr
Jan 31, 1:50 PM MST	Winter Weather Advisory	CYS	45 hr
Feb 1, 2:04 PM MST	High Wind Watch	CYS	13 hr
Feb 2, 2:50 AM MST	High Wind Warning	CYS	32 hr
Feb 4, 2:39 AM MST	High Wind Watch	CYS	24 hr
Feb 4, 9:14 AM MST	High Wind Warning	CYS	3 hr
Feb 4, 12:42 PM MST	High Wind Warning	CYS	32 hr
Feb 6, 2:52 AM MST	High Wind Watch	CYS	32 hr
Feb 6, 2:24 PM MST	High Wind Warning	CYS	37 hr
Feb 6, 2:28 PM MST	Winter Weather Advisory	CYS	41 hr
Feb 7, 4:24 PM MST	Snow Squall Warning	CYS	36 min
Feb 7, 4:57 PM MST	Snow Squall Warning	CYS	33 min
Feb 12, 2:31 AM MST	Cold Weather Advisory	CYS	29 hr
Feb 12, 2:31 AM MST	High Wind Watch	CYS	53 hr
Feb 12, 1:17 PM MST	High Wind Warning	CYS	43 hr
Feb 12, 1:25 PM MST	Winter Storm Watch	CYS	14 hr
Feb 13, 3:21 AM MST	Winter Storm Warning	CYS	68 hr
Feb 13, 3:21 AM MST	Winter Weather Advisory	CYS	24 hr
Feb 14, 12:31 PM MST	Winter Weather Advisory	CYS	34 hr
Feb 14, 12:38 PM MST	High Wind Watch	CYS	49 hr
Feb 15, 1:26 PM MST	Winter Weather Advisory	CYS	4 days
Feb 15, 11:50 PM MST	High Wind Warning	CYS	20 hr
Feb 16, 3:20 AM MST	Winter Storm Warning	CYS	44 hr
Feb 17, 1:58 PM MST	Winter Weather Advisory	CYS	28 hr
Feb 18, 3:13 AM MST	Winter Storm Warning	CYS	32 hr
Feb 19, 2:38 PM MST	Winter Weather Advisory	CYS	38 hr
Feb 21, 1:30 AM MST	High Wind Watch	CYS	35 hr
Feb 21, 1:45 PM MST	High Wind Warning	CYS	4 days
Mar 2, 2:39 AM MST	Winter Storm Watch	CYS	32 hr
Mar 3, 2:16 AM MST	Winter Storm Warning	CYS	33 hr
Mar 3, 11:05 AM MST	Winter Weather Advisory	CYS	26 hr
Mar 4, 1:31 PM MST	Winter Storm Watch	CYS	37 hr
Mar 5, 2:23 PM MST	Winter Storm Warning	CYS	53 hr
Mar 5, 2:23 PM MST	Winter Weather Advisory	CYS	53 hr
Mar 6, 1:32 PM MST	Winter Weather Advisory	CYS	18 hr
Mar 8, 12:28 PM MST	High Wind Watch	CYS	53 hr
Mar 9, 3:25 AM MDT	High Wind Warning	CYS	39 hr
Mar 12, 2:44 AM MDT	High Wind Watch	CYS	11 hr
Mar 12, 1:30 PM MDT	High Wind Warning	CYS	29 hr
Mar 13, 3:08 AM MDT	Winter Weather Advisory	CYS	36 hr
Mar 13, 3:14 AM MDT	High Wind Watch	CYS	42 hr
Mar 13, 3:12 PM MDT	High Wind Warning	CYS	32 hr
Mar 15, 1:18 AM MDT	High Wind Watch	CYS	12 hr
Mar 15, 1:31 PM MDT	High Wind Warning	CYS	52 hr
Mar 17, 1:19 AM MDT	Winter Storm Watch	CYS	13 hr
Mar 17, 2:11 PM MDT	Winter Storm Warning	CYS	40 hr
Mar 17, 2:11 PM MDT	Winter Weather Advisory	CYS	40 hr
Mar 19, 2:30 AM MDT	High Wind Watch	CYS	17 hr
Mar 19, 7:02 PM MDT	High Wind Warning	CYS	48 hr
Mar 21, 2:23 AM MDT	Winter Weather Advisory	CYS	46 hr
Mar 21, 2:49 AM MDT	High Wind Watch	CYS	24 hr
Mar 21, 2:06 PM MDT	Winter Storm Warning	CYS	34 hr
Mar 21, 2:18 PM MDT	High Wind Warning	CYS	34 hr
Mar 23, 3:04 AM MDT	High Wind Warning	CYS	39 hr
Mar 28, 2:27 AM MDT	Winter Weather Advisory	CYS	34 hr
Mar 29, 12:50 PM MDT	Winter Weather Advisory	CYS	23 hr
Mar 31, 3:21 AM MDT	Winter Weather Advisory	CYS	39 hr
Mar 31, 5:14 PM MDT	Snow Squall Warning	CYS	31 min
Apr 8, 1:06 PM MDT	High Wind Watch	CYS	12 hr
Apr 9, 12:41 AM MDT	High Wind Warning	CYS	19 hr
Apr 16, 2:19 AM MDT	Winter Storm Watch	CYS	24 hr
Apr 17, 2:38 AM MDT	Winter Storm Warning	CYS	39 hr
Apr 17, 2:38 AM MDT	Winter Weather Advisory	CYS	39 hr
Apr 24, 1:40 AM MDT	Dense Fog Advisory	CYS	7 hr
Apr 24, 5:26 PM MDT	Special Weather Statement	CYS	34 min
May 4, 4:02 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	43 min
May 6, 2:29 AM MDT	Dense Fog Advisory	CYS	30 hr
May 6, 2:49 AM MDT	Winter Weather Advisory	CYS	30 hr
May 11, 2:00 PM MDT	Special Weather Statement	CYS	30 min
May 11, 2:41 PM MDT	Special Weather Statement	CYS	34 min
May 18, 12:24 PM MDT	Winter Weather Advisory	CYS	26 hr
May 27, 5:20 PM MDT	Special Weather Statement	CYS	25 min
Jun 12, 2:04 PM MDT	Mesoscale Discussion	SPC	116 min
Jun 15, 3:35 PM MDT	High Wind Warning	CYS	4 hr
Jun 16, 2:25 PM MDT	High Wind Watch	CYS	9 hr
Jun 16, 8:54 PM MDT	Severe Thunderstorm Warning	CYS	66 min
Jun 17, 3:33 PM MDT	Special Weather Statement	CYS	57 min
Jun 17, 3:41 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	64 min
Jun 19, 2:16 PM MDT	High Wind Watch	CYS	21 hr
Jun 20, 12:55 AM MDT	High Wind Warning	CYS	32 hr
Jun 20, 1:04 PM MDT	Red Flag Warning	CYS	31 hr
Jun 25, 4:05 PM MDT	Special Weather Statement	CYS	40 min
Jun 26, 2:21 PM MDT	Fire Weather Watch	CYS	10 hr
Jun 27, 12:23 AM MDT	Red Flag Warning	CYS	18 hr
Jun 27, 11:19 PM MDT	Red Flag Warning	CYS	22 hr
Jun 28, 7:48 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	72 min
Jun 28, 9:16 PM MDT	Special Weather Statement	CYS	59 min
Jun 28, 9:44 PM MDT	High Wind Warning	CYS	2 hr
Jun 29, 3:15 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	31 min
Jun 29, 5:22 PM MDT	Severe Thunderstorm Warning	CYS	22 min
Jul 1, 1:28 PM MDT	High Wind Watch	CYS	5 hr
Jul 4, 3:18 PM MDT	Special Weather Statement	CYS	27 min
Jul 4, 5:04 PM MDT	Special Weather Statement	CYS	41 min
Jul 4, 5:52 PM MDT	Special Weather Statement	CYS	38 min
Jul 6, 7:50 PM MDT	Special Weather Statement	CYS	55 min
Jul 8, 1:26 AM MDT	Fire Weather Watch	CYS	8 hr
Jul 8, 9:43 AM MDT	Red Flag Warning	CYS	36 hr
Jul 10, 12:44 AM MDT	Special Weather Statement	CYS	76 min
Jul 10, 1:54 AM MDT	Special Weather Statement	CYS	81 min
Jul 10, 3:09 AM MDT	Special Weather Statement	CYS	66 min
Jul 11, 3:55 PM MDT	Severe Thunderstorm Warning	CYS	50 min
Jul 15, 7:26 PM MDT	Severe Thunderstorm Warning	CYS	49 min
Jul 16, 12:41 PM MDT	Mesoscale Discussion	SPC	2 hr
Jul 16, 2:13 PM MDT	Special Weather Statement	CYS	32 min
Jul 16, 3:47 PM MDT	Severe Thunderstorm Warning	CYS	58 min
Jul 16, 5:33 PM MDT	Special Weather Statement	CYS	27 min
Jul 16, 6:12 PM MDT	Special Weather Statement	CYS	33 min
Jul 16, 6:47 PM MDT	Special Weather Statement	CYS	43 min
Jul 17, 2:31 AM MDT	Red Flag Warning	CYS	17 hr
Jul 20, 2:07 AM MDT	Red Flag Warning	CYS	17 hr
Jul 21, 3:05 PM MDT	Special Weather Statement	CYS	55 min
Jul 22, 2:54 AM MDT	Red Flag Warning	CYS	17 hr
Jul 25, 12:58 PM MDT	Fire Weather Watch	CYS	13 hr
Jul 26, 2:02 AM MDT	Red Flag Warning	CYS	18 hr
Jul 27, 1:13 AM MDT	Red Flag Warning	CYS	18 hr
Jul 29, 6:04 PM MDT	Severe Thunderstorm Warning	CYS	26 min
Jul 29, 6:30 PM MDT	Special Weather Statement	CYS	30 min
Jul 29, 6:53 PM MDT	Special Weather Statement	CYS	37 min
Jul 29, 7:01 PM MDT	Special Weather Statement	CYS	29 min
Jul 30, 2:31 PM MDT	Mesoscale Discussion	SPC	119 min
Jul 30, 6:29 PM MDT	Severe Thunderstorm Warning	CYS	28 min
Jul 31, 3:12 PM MDT	Special Weather Statement	CYS	33 min
Aug 2, 4:03 PM MDT	Special Weather Statement	CYS	42 min
Aug 2, 4:04 PM MDT	Special Weather Statement	CYS	41 min
Aug 2, 4:33 PM MDT	Severe Thunderstorm Warning	CYS	42 min
Aug 2, 4:59 PM MDT	Special Weather Statement	CYS	31 min
Aug 2, 5:19 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	41 min
Aug 2, 5:50 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Aug 3, 1:08 PM MDT	Fire Weather Watch	CYS	26 hr
Aug 3, 1:08 PM MDT	Red Flag Warning	CYS	6 days
Aug 8, 6:51 PM MDT	High Wind Warning	CYS	2 hr
Aug 12, 1:52 PM MDT	Red Flag Warning	CYS	30 hr
Aug 14, 3:17 PM MDT	Special Weather Statement	CYS	28 min
Aug 14, 3:56 PM MDT	Special Weather Statement	CYS	34 min
Sep 12, 1:16 PM MDT	Special Weather Statement	CYS	29 min
Sep 15, 2:50 PM MDT	Special Weather Statement	CYS	40 min
Sep 15, 7:11 PM MDT	Special Weather Statement	CYS	34 min
Sep 15, 8:12 PM MDT	Special Weather Statement	CYS	33 min
Sep 21, 5:32 PM MDT	Special Weather Statement	CYS	43 min
Sep 22, 2:01 PM MDT	Winter Weather Advisory	CYS	28 hr
Sep 23, 1:55 AM MDT	Freeze Watch	CYS	11 hr
Sep 23, 12:47 PM MDT	Freeze Warning	CYS	20 hr
Oct 4, 2:36 PM MDT	Special Weather Statement	CYS	84 min
Oct 5, 2:06 PM MDT	Freeze Watch	CYS	11 hr
Oct 6, 1:28 AM MDT	Freeze Warning	CYS	30 hr
Oct 11, 3:08 AM MDT	High Wind Watch	CYS	11 hr
Oct 11, 2:14 PM MDT	High Wind Warning	CYS	28 hr
Oct 12, 12:52 AM MDT	Special Weather Statement	CYS	53 min
Oct 15, 3:20 PM MDT	High Wind Watch	CYS	23 hr
Oct 16, 1:45 AM MDT	High Wind Warning	CYS	52 hr
Oct 18, 1:47 AM MDT	High Wind Watch	CYS	12 hr
Oct 18, 1:36 PM MDT	High Wind Warning	CYS	49 hr
Oct 25, 2:24 PM MDT	Winter Weather Advisory	CYS	52 hr
Oct 31, 2:41 PM MDT	High Wind Watch	CYS	22 hr
Nov 1, 12:36 PM MDT	High Wind Warning	CYS	26 hr
Nov 5, 1:09 PM MST	High Wind Watch	CYS	28 hr
Nov 5, 9:59 PM MST	High Wind Warning	CYS	25 hr
Nov 7, 2:18 AM MST	High Wind Warning	CYS	18 hr
Nov 9, 1:33 AM MST	High Wind Watch	CYS	12 hr
Nov 9, 1:12 PM MST	High Wind Warning	CYS	48 hr
Nov 13, 1:07 AM MST	High Wind Watch	CYS	12 hr
Nov 13, 12:50 PM MST	High Wind Warning	CYS	40 hr
Nov 16, 2:09 AM MST	Winter Weather Advisory	CYS	42 hr
Nov 16, 1:18 PM MST	High Wind Warning	CYS	34 hr
Nov 23, 12:35 AM MST	High Wind Watch	CYS	13 hr
Nov 23, 1:08 PM MST	High Wind Warning	CYS	48 hr
Nov 26, 6:28 AM MST	High Wind Warning	CYS	10 hr
Nov 29, 12:52 PM MST	Winter Weather Advisory	CYS	37 hr
Nov 30, 1:30 AM MST	High Wind Watch	CYS	23 hr
Dec 1, 12:52 AM MST	High Wind Warning	CYS	40 hr
Dec 1, 2:12 PM MST	Winter Weather Advisory	CYS	45 hr
Dec 3, 1:23 PM MST	High Wind Warning	CYS	45 hr
Dec 4, 12:25 AM MST	Winter Storm Warning	CYS	3 days
Dec 5, 12:20 AM MST	Winter Weather Advisory	CYS	41 hr
Dec 5, 10:15 AM MST	High Wind Warning	CYS	28 hr
Dec 6, 2:03 PM MST	High Wind Warning	CYS	24 hr
Dec 7, 2:38 PM MST	High Wind Watch	CYS	4 days
Dec 7, 2:38 PM MST	High Wind Warning	CYS	5 days
Dec 8, 2:53 AM MST	High Wind Warning	CYS	45 hr
Dec 9, 3:12 AM MST	Winter Weather Advisory	CYS	32 hr
Dec 12, 5:10 AM MST	High Wind Warning	CYS	27 hr
Dec 15, 1:00 AM MST	High Wind Warning	CYS	40 hr
Dec 16, 1:38 AM MST	High Wind Watch	CYS	13 hr
Dec 16, 2:50 PM MST	High Wind Warning	CYS	43 hr
Dec 16, 2:52 PM MST	Winter Weather Advisory	CYS	27 hr
Dec 17, 2:52 PM MST	High Wind Watch	CYS	19 hr
Dec 17, 3:36 PM MST	Special Weather Statement	CYS	69 min
Dec 17, 3:45 PM MST	Snow Squall Warning Significant damage threat	CYS	60 min
Dec 18, 10:16 AM MST	High Wind Warning	CYS	46 hr
Dec 19, 1:35 AM MST	Winter Weather Advisory	CYS	42 hr
Dec 20, 3:16 PM MST	High Wind Warning	CYS	50 hr
Dec 23, 11:22 AM MST	Red Flag Warning	CYS	6 hr
Dec 23, 1:30 PM MST	High Wind Warning	CYS	22 hr
Dec 24, 1:17 AM MST	High Wind Warning	CYS	40 hr
Dec 25, 1:14 PM MST	Winter Storm Watch	CYS	12 hr
Dec 25, 4:52 PM MST	High Wind Warning	CYS	33 hr
Dec 26, 1:36 AM MST	Winter Storm Warning	CYS	54 hr
Dec 26, 1:36 AM MST	Winter Weather Advisory	CYS	54 hr
Dec 27, 12:48 PM MST	High Wind Watch	CYS	24 hr
Dec 28, 1:05 AM MST	High Wind Warning	CYS	19 hr
Dec 29, 12:34 AM MST	High Wind Watch	CYS	14 hr
Dec 29, 2:05 PM MST	High Wind Warning	CYS	22 hr
Dec 30, 2:13 AM MST	High Wind Watch	CYS	33 hr
Dec 30, 12:15 PM MST	High Wind Warning	CYS	21 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	14
Mesoscale Discussion	3
Special Weather Statement	36
Winter
Snow Squall Warning	4
Winter Storm Warning	12
Winter Storm Watch	8
Winter Weather Advisory	35
Cold
Extreme Cold Warning	1
Freeze Warning	2
Freeze Watch	2
Cold Weather Advisory	2
Wind and dust
High Wind Warning	55
High Wind Watch	39
Fire
Red Flag Warning	12
Fire Weather Watch	4
Fog and smoke
Dense Fog Advisory	2

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.