Weather alerts in Carbon County, Wyoming, 2018

193 weather alerts in 2018, 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 2018. Tap one for its archive.

Alerts: 193
Warnings: 80
Watches: 52
Advisories: 40
Busiest month: January27 alerts
Busiest day: August 5, 201811 alerts

Over time

By month

Warning verification

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

0 of 1 tornado reports fell inside a warning.

Carbon County, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			1	0%
Severe thunderstorm warnings	18	3	83%	10	80%	14 min
Flash flood warnings	0			0

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 6, 8:22 AM MST	Winter Weather Advisory	CYS	20 hr
Jan 8, 2:12 AM MST	High Wind Watch	CYS	19 hr
Jan 8, 1:18 PM MST	Winter Storm Watch	CYS	15 hr
Jan 8, 4:40 PM MST	High Wind Warning	CYS	24 hr
Jan 9, 4:43 AM MST	Winter Storm Warning	CYS	40 hr
Jan 9, 4:43 AM MST	Winter Weather Advisory	CYS	40 hr
Jan 10, 12:03 AM MST	High Wind Warning	CYS	7 hr
Jan 10, 1:33 PM MST	High Wind Watch	CYS	14 hr
Jan 11, 3:31 AM MST	High Wind Warning	CYS	29 hr
Jan 11, 3:45 AM MST	Winter Weather Advisory	CYS	37 hr
Jan 12, 4:04 AM MST	Winter Storm Warning	CYS	13 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 19, 1:59 PM MST	Winter Weather Advisory	CYS	23 hr
Jan 22, 4:11 AM MST	Winter Weather Advisory	CYS	10 hr
Jan 23, 2:24 AM MST	High Wind Watch	CYS	22 hr
Jan 23, 2:29 PM MST	High Wind Watch	CYS	24 hr
Jan 24, 12:53 AM MST	High Wind Warning	CYS	14 hr
Jan 24, 2:04 PM MST	High Wind Warning	CYS	27 hr
Jan 25, 1:48 AM MST	Winter Weather Advisory	CYS	32 hr
Jan 26, 1:21 AM MST	High Wind Watch	CYS	19 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, 3:39 AM MST	High Wind Watch	CYS	10 hr
Feb 1, 2:06 PM MST	High Wind Warning	CYS	4 days
Feb 1, 2:07 PM MST	Winter Storm Watch	CYS	14 hr
Feb 2, 4:01 AM MST	Winter Storm Warning	CYS	4 days
Feb 4, 3:32 AM MST	High Wind Warning	CYS	28 hr
Feb 7, 8:29 AM MST	High Wind Warning	CYS	37 hr
Feb 12, 3:19 AM MST	Winter Weather Advisory	CYS	23 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 13, 12:14 PM MST	Winter Storm Warning	CYS	53 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, 2:44 AM MST	Blizzard Warning	CYS	24 hr
Feb 16, 2:58 AM MST	High Wind Warning	CYS	61 hr
Feb 16, 10:25 AM MST	Winter Weather Advisory	CYS	8 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 19, 10:17 PM MST	Wind Chill Advisory	CYS	10 hr
Feb 20, 2:40 AM MST	Wind Chill Warning	CYS	5 hr
Feb 20, 12:45 PM MST	Wind Chill Advisory	CYS	20 hr
Feb 23, 2:35 PM MST	High Wind Watch	CYS	23 hr
Feb 24, 2:05 AM MST	High Wind Watch	CYS	11 hr
Feb 24, 2:05 AM MST	High Wind Warning	CYS	16 hr
Feb 24, 6:27 AM MST	Winter Weather Advisory	CYS	12 hr
Feb 24, 1:32 PM MST	High Wind Warning	CYS	36 hr
Feb 25, 2:23 AM MST	Winter Weather Advisory	CYS	17 hr
Mar 1, 5:13 PM MST	High Wind Warning	CYS	23 hr
Mar 3, 3:16 AM MST	Winter Weather Advisory	CYS	50 hr
Mar 4, 2:09 AM MST	High Wind Warning	CYS	42 hr
Mar 5, 12:44 PM MST	Snow Squall Warning	CYS	31 min
Mar 5, 1:14 PM MST	Snow Squall Warning	CYS	31 min
Mar 14, 2:01 AM MDT	High Wind Watch	CYS	24 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 Storm Warning	CYS	37 hr
Mar 17, 2:15 PM MDT	Winter Weather Advisory	CYS	37 hr
Mar 22, 3:40 PM MDT	High Wind Warning	CYS	17 hr
Mar 25, 3:35 AM MDT	Winter Weather Advisory	CYS	29 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 30, 2:02 PM MDT	Winter Storm Warning	CYS	42 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, 3:56 AM MDT	Winter Weather Advisory	CYS	26 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 4, 1:43 PM MDT	Winter Storm Watch	CYS	13 hr
Apr 5, 2:32 AM MDT	Winter Storm Warning	CYS	39 hr
Apr 7, 1:32 AM MDT	High Wind Watch	CYS	13 hr
Apr 7, 2:00 AM MDT	Winter Weather Advisory	CYS	28 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 16, 1:08 PM MDT	High Wind Watch	CYS	14 hr
Apr 16, 7:01 PM MDT	High Wind Warning	CYS	26 hr
Apr 19, 2:25 PM MDT	Winter Storm Warning	CYS	39 hr
Apr 19, 2:25 PM MDT	Winter Weather Advisory	CYS	45 hr
May 1, 2:00 AM MDT	Winter Storm Watch	CYS	23 hr
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 11, 2:02 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 11, 4:31 PM MDT	Special Weather Statement	CYS	59 min
May 11, 4:49 PM MDT	Severe Thunderstorm Warning	CYS	41 min
May 11, 5:27 PM MDT	Severe Thunderstorm Warning	CYS	33 min
May 11, 5:59 PM MDT	Severe Thunderstorm Warning	CYS	46 min
May 11, 6:10 PM MDT	Severe Thunderstorm Warning	CYS	26 min
May 11, 6:39 PM MDT	Severe Thunderstorm Warning	CYS	51 min
May 18, 4:00 AM MDT	Winter Weather Advisory	CYS	25 hr
May 19, 7:30 PM MDT	Dense Fog Advisory	CYS	15 hr
May 22, 5:30 PM MDT	Special Weather Statement	CYS	30 min
May 26, 7:37 PM MDT	Special Weather Statement	CYS	38 min
May 27, 11:36 AM MDT	Mesoscale Discussion	SPC	2 hr
May 27, 12:05 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
May 27, 2:25 PM MDT	Mesoscale Discussion	SPC	2 hr
May 28, 12:19 PM MDT	Mesoscale Discussion	SPC	86 min
May 28, 12:22 PM MDT	Special Weather Statement	CYS	38 min
Jun 6, 4:36 PM MDT	Severe Thunderstorm Warning	CYS	39 min
Jun 6, 5:01 PM MDT	Severe Thunderstorm Warning	CYS	44 min
Jun 16, 1:47 AM MDT	Flash Flood Watch	CYS	37 hr
Jun 19, 12:00 PM MDT	Severe Thunderstorm Warning	CYS	45 min
Jun 23, 4:14 PM MDT	Mesoscale Discussion	SPC	61 min
Jul 5, 9:49 AM MDT	Flash Flood Watch	CYS	10 hr
Jul 5, 3:29 PM MDT	Severe Thunderstorm Warning	CYS	31 min
Jul 11, 5:43 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Jul 11, 10:23 PM MDT	Areal Flood Advisory	CYS	3 hr
Jul 17, 8:20 PM MDT	Severe Thunderstorm Warning	CYS	25 min
Jul 22, 12:22 PM MDT	Flash Flood Watch	CYS	10 hr
Jul 25, 10:11 AM MDT	Flash Flood Watch	CYS	11 hr
Jul 26, 4:28 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Jul 26, 8:45 PM MDT	Special Weather Statement	CYS	45 min
Jul 28, 6:28 PM MDT	Severe Thunderstorm Warning	CYS	35 min
Jul 29, 3:30 PM MDT	Severe Thunderstorm Warning	CYS	45 min
Jul 29, 4:04 PM MDT	Special Weather Statement	CYS	41 min
Jul 29, 4:58 PM MDT	Severe Thunderstorm Warning	CYS	47 min
Aug 5, 2:50 AM MDT	Special Weather Statement	CYS	40 min
Aug 5, 9:29 AM MDT	Special Weather Statement	CYS	46 min
Aug 5, 9:59 AM MDT	Special Weather Statement	CYS	46 min
Aug 5, 10:45 AM MDT	Special Weather Statement	CYS	45 min
Aug 5, 11:16 AM MDT	Severe Thunderstorm Warning	CYS	44 min
Aug 5, 11:45 AM MDT	Mesoscale Discussion	SPC	2 hr
Aug 5, 11:52 AM MDT	Severe Thunderstorm Warning	CYS	38 min
Aug 5, 2:25 PM MDT	Special Weather Statement	CYS	50 min
Aug 5, 3:22 PM MDT	Special Weather Statement	CYS	38 min
Aug 5, 5:11 PM MDT	Severe Thunderstorm Warning	CYS	33 min
Aug 5, 5:43 PM MDT	Special Weather Statement	CYS	47 min
Aug 5, 6:05 PM MDT	Mesoscale Discussion	SPC	115 min
Aug 21, 3:46 AM MDT	Flash Flood Watch	CYS	16 hr
Aug 24, 3:08 PM MDT	Special Weather Statement	CYS	52 min
Aug 24, 4:08 PM MDT	Special Weather Statement	CYS	52 min
Aug 27, 1:44 AM MDT	High Wind Warning	CYS	16 hr
Sep 20, 2:46 PM MDT	Freeze Warning	CYS	17 hr
Sep 25, 3:15 AM MDT	Freeze Watch	CYS	11 hr
Sep 25, 2:24 PM MDT	Freeze Warning	CYS	19 hr
Oct 2, 8:53 PM MDT	High Wind Warning	CYS	18 hr
Oct 6, 4:53 AM MDT	Winter Storm Watch	CYS	10 hr
Oct 6, 3:05 PM MDT	Winter Storm Warning	CYS	48 hr
Oct 6, 3:05 PM MDT	Winter Weather Advisory	CYS	59 hr
Oct 9, 11:12 AM MDT	Winter Weather Advisory	CYS	31 hr
Oct 12, 2:13 PM MDT	Winter Weather Advisory	CYS	40 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 2, 2:33 AM MDT	Winter Storm Watch	CYS	23 hr
Nov 3, 1:16 AM MDT	Winter Storm Watch	CYS	12 hr
Nov 3, 1:16 AM MDT	Winter Storm Warning	CYS	57 hr
Nov 3, 1:27 AM MDT	High Wind Watch	CYS	24 hr
Nov 4, 1:23 AM MDT	Winter Weather Advisory	CYS	25 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	Winter Storm Warning	CYS	56 hr
Nov 15, 12:05 PM MST	Winter Weather Advisory	CYS	56 hr
Nov 20, 1:55 PM MST	Winter Weather Advisory	CYS	48 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 22, 11:38 PM MST	Winter Weather Advisory	CYS	5 hr
Nov 23, 2:45 PM MST	Winter Weather Advisory	CYS	36 hr
Nov 27, 12:05 AM MST	High Wind Warning	CYS	29 hr
Nov 28, 1:37 AM MST	Winter Storm Watch	CYS	12 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 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 18, 2:22 PM MST	Winter Weather Advisory	CYS	30 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 23, 2:03 PM MST	Winter Weather Advisory	CYS	28 hr
Dec 28, 2:38 PM MST	High Wind Warning	CYS	53 hr
Dec 28, 4:52 PM MST	High Wind Watch	CYS	10 hr
Dec 30, 2:19 AM MST	Winter Weather Advisory	CYS	39 hr
Dec 30, 2:48 PM MST	Wind Chill Warning	CYS	43 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	18
Severe Thunderstorm Watch	2
Mesoscale Discussion	6
Special Weather Statement	15
Flooding
Flash Flood Watch	5
Areal Flood Advisory	1
Winter
Blizzard Warning	1
Snow Squall Warning	2
Winter Storm Warning	15
Winter Storm Watch	13
Winter Weather Advisory	36
Cold
Freeze Warning	2
Wind Chill Warning	2
Freeze Watch	1
Wind Chill Advisory	2
Wind and dust
High Wind Warning	40
High Wind Watch	31
Fog and smoke
Dense Fog Advisory	1

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.