Weather alerts in Carbon County, Wyoming, 2017

162 weather alerts in 2017, 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 2017. Tap one for its archive.

Alerts: 162
Warnings: 63
Watches: 46
Advisories: 44
Busiest month: December26 alerts
Busiest day: May 26, 20176 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, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	6	1	83%	7	14%	1 min
Flash flood warnings	0			0

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	30	14	53%	29	86%	18 min
NWS Cheyenne, WY: severe thunderstorm warnings	120	41	66%	134	57%	26 min
NWS Cheyenne, WY: flash flood warnings	4	1	75%	2	50%	31 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, 2:10 PM MST	Winter Storm Watch	CYS	13 hr
Jan 2, 3:08 AM MST	Winter Storm Warning	CYS	3 days
Jan 2, 2:35 PM MST	Winter Weather Advisory	CYS	18 hr
Jan 3, 2:31 AM MST	Winter Storm Watch	CYS	12 hr
Jan 3, 2:20 PM MST	Winter Weather Advisory	CYS	39 hr
Jan 5, 3:03 PM MST	Wind Chill Warning	CYS	20 hr
Jan 6, 1:53 PM MST	High Wind Watch	CYS	24 hr
Jan 6, 1:57 PM MST	Wind Chill Advisory	CYS	19 hr
Jan 7, 2:11 PM MST	High Wind Watch	CYS	24 hr
Jan 7, 2:11 PM MST	High Wind Warning	CYS	19 hr
Jan 7, 2:21 PM MST	Winter Storm Watch	CYS	12 hr
Jan 8, 2:18 AM MST	Winter Storm Warning	CYS	4 days
Jan 8, 2:25 PM MST	High Wind Warning	CYS	61 hr
Jan 9, 3:02 AM MST	High Wind Watch	CYS	23 hr
Jan 10, 1:58 AM MST	High Wind Warning	CYS	26 hr
Jan 10, 3:01 PM MST	Winter Weather Advisory	CYS	26 hr
Jan 12, 12:44 PM MST	Winter Weather Advisory	CYS	24 hr
Jan 13, 8:15 AM MST	Dense Fog Advisory	CYS	5 hr
Jan 14, 5:41 PM MST	Dense Fog Advisory	CYS	32 hr
Jan 15, 7:45 PM MST	Winter Weather Advisory	CYS	14 hr
Jan 22, 2:02 PM MST	Winter Weather Advisory	CYS	52 hr
Jan 27, 1:12 AM MST	Wind Chill Advisory	CYS	7 hr
Jan 29, 2:02 PM MST	High Wind Watch	CYS	31 hr
Jan 30, 2:29 AM MST	High Wind Warning	CYS	50 hr
Feb 2, 1:58 PM MST	High Wind Watch	CYS	12 hr
Feb 3, 2:27 AM MST	High Wind Warning	CYS	39 hr
Feb 3, 12:54 PM MST	Winter Weather Advisory	CYS	34 hr
Feb 5, 1:34 AM MST	High Wind Watch	CYS	12 hr
Feb 5, 1:05 PM MST	High Wind Watch	CYS	15 hr
Feb 5, 1:05 PM MST	High Wind Warning	CYS	5 days
Feb 5, 1:13 PM MST	Winter Storm Watch	CYS	15 hr
Feb 6, 3:49 AM MST	Winter Storm Warning	CYS	56 hr
Feb 7, 3:50 AM MST	High Wind Warning	CYS	4 days
Feb 9, 1:26 AM MST	Winter Storm Watch	CYS	25 hr
Feb 10, 2:02 AM MST	Winter Storm Warning	CYS	36 hr
Feb 19, 2:11 AM MST	High Wind Watch	CYS	33 hr
Feb 19, 1:30 PM MST	High Wind Warning	CYS	49 hr
Feb 21, 3:28 AM MST	Winter Storm Watch	CYS	34 hr
Feb 21, 7:53 PM MST	Winter Storm Warning	CYS	63 hr
Feb 23, 3:07 AM MST	Blizzard Warning	CYS	17 hr
Feb 24, 12:55 PM MST	Winter Weather Advisory	CYS	49 hr
Feb 25, 9:19 PM MST	High Wind Warning	CYS	5 hr
Feb 26, 1:13 PM MST	Winter Storm Watch	CYS	14 hr
Feb 26, 1:13 PM MST	Winter Storm Warning	CYS	38 hr
Feb 26, 1:13 PM MST	Winter Weather Advisory	CYS	38 hr
Feb 27, 12:50 PM MST	High Wind Watch	CYS	19 hr
Feb 28, 8:05 AM MST	High Wind Warning	CYS	39 hr
Mar 4, 2:44 PM MST	High Wind Watch	CYS	23 hr
Mar 5, 2:42 AM MST	Winter Weather Advisory	CYS	38 hr
Mar 5, 2:54 AM MST	High Wind Warning	CYS	4 days
Mar 8, 12:22 AM MST	High Wind Watch	CYS	19 hr
Mar 8, 7:24 PM MST	High Wind Warning	CYS	21 hr
Mar 11, 3:26 AM MST	High Wind Watch	CYS	10 hr
Mar 11, 1:09 PM MST	High Wind Warning	CYS	24 hr
Mar 13, 9:00 PM MDT	High Wind Warning	CYS	12 hr
Mar 16, 1:21 PM MDT	High Wind Warning	CYS	5 hr
Mar 23, 12:40 PM MDT	Winter Weather Advisory	CYS	16 hr
Mar 27, 4:02 AM MDT	Winter Storm Watch	CYS	23 hr
Mar 27, 7:09 PM MDT	Winter Weather Advisory	CYS	29 hr
Mar 28, 12:57 AM MDT	Dense Fog Advisory	CYS	7 hr
Mar 28, 2:55 AM MDT	Winter Storm Warning	CYS	12 hr
Mar 30, 10:14 AM MDT	Winter Storm Watch	CYS	18 hr
Mar 30, 3:15 PM MDT	Winter Storm Warning	CYS	29 hr
Mar 31, 3:45 AM MDT	Winter Weather Advisory	CYS	31 hr
Apr 4, 2:36 AM MDT	Winter Weather Advisory	CYS	15 hr
Apr 7, 3:29 AM MDT	High Wind Watch	CYS	8 hr
Apr 7, 11:25 AM MDT	High Wind Warning	CYS	30 hr
Apr 8, 3:58 AM MDT	High Wind Watch	CYS	17 hr
Apr 8, 9:15 PM MDT	High Wind Warning	CYS	30 hr
Apr 20, 3:47 AM MDT	Winter Weather Advisory	CYS	34 hr
Apr 24, 2:16 PM MDT	Winter Weather Advisory	CYS	28 hr
Apr 26, 3:52 AM MDT	Winter Weather Advisory	CYS	25 hr
Apr 27, 4:25 AM MDT	Winter Storm Warning	CYS	44 hr
Apr 27, 4:25 AM MDT	Winter Weather Advisory	CYS	50 hr
May 8, 4:43 PM MDT	Special Weather Statement	CYS	47 min
May 16, 10:40 AM MDT	Winter Storm Watch	CYS	15 hr
May 17, 1:16 AM MDT	Winter Storm Watch	CYS	21 hr
May 17, 1:16 AM MDT	Winter Storm Warning	CYS	59 hr
May 17, 3:25 PM MDT	Winter Weather Advisory	CYS	45 hr
May 26, 11:11 AM MDT	Mesoscale Discussion	SPC	2 hr
May 26, 1:00 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
May 26, 1:45 PM MDT	Severe Thunderstorm Warning	CYS	45 min
May 26, 2:29 PM MDT	Severe Thunderstorm Warning	CYS	46 min
May 26, 2:38 PM MDT	Mesoscale Discussion	SPC	97 min
May 26, 3:11 PM MDT	Severe Thunderstorm Warning	CYS	43 min
Jun 6, 4:05 PM MDT	Special Weather Statement	CYS	40 min
Jun 6, 4:31 PM MDT	Severe Thunderstorm Warning	CYS	59 min
Jun 6, 4:55 PM MDT	Areal Flood Advisory	CYS	3 hr
Jun 6, 4:59 PM MDT	Areal Flood Advisory	CYS	3 hr
Jun 6, 5:17 PM MDT	Areal Flood Advisory	CYS	3 hr
Jun 6, 5:51 PM MDT	Severe Thunderstorm Warning	CYS	54 min
Jun 12, 3:50 AM MDT	High Wind Watch	CYS	23 hr
Jun 13, 2:54 AM MDT	High Wind Warning	CYS	16 hr
Jun 27, 4:45 PM MDT	Special Weather Statement	RIW	15 min
Aug 13, 7:10 PM MDT	Special Weather Statement	CYS	50 min
Aug 15, 1:29 PM MDT	Severe Thunderstorm Warning	CYS	46 min
Sep 5, 2:17 PM MDT	Frost Advisory	CYS	17 hr
Sep 13, 4:47 PM MDT	Special Weather Statement	CYS	43 min
Sep 16, 2:08 PM MDT	Frost Advisory	CYS	18 hr
Sep 19, 3:45 PM MDT	Special Weather Statement	CYS	90 min
Sep 19, 5:15 PM MDT	Special Weather Statement	CYS	30 min
Sep 24, 3:01 AM MDT	Winter Weather Advisory	CYS	21 hr
Sep 30, 2:26 PM MDT	Winter Storm Watch	CYS	24 hr
Oct 1, 3:52 AM MDT	Winter Storm Warning	CYS	40 hr
Oct 1, 2:33 PM MDT	Winter Weather Advisory	CYS	30 hr
Oct 5, 2:46 PM MDT	High Wind Watch	CYS	24 hr
Oct 6, 2:37 PM MDT	High Wind Warning	CYS	28 hr
Oct 7, 3:44 AM MDT	Winter Storm Watch	CYS	23 hr
Oct 8, 3:11 AM MDT	Winter Storm Warning	CYS	33 hr
Oct 8, 3:11 AM MDT	Winter Weather Advisory	CYS	33 hr
Oct 20, 4:11 AM MDT	High Wind Watch	CYS	23 hr
Oct 21, 2:58 AM MDT	High Wind Warning	CYS	49 hr
Oct 24, 1:12 AM MDT	High Wind Watch	CYS	20 hr
Oct 24, 2:28 PM MDT	High Wind Warning	CYS	33 hr
Oct 30, 2:07 PM MDT	High Wind Watch	CYS	24 hr
Oct 31, 3:59 AM MDT	High Wind Warning	CYS	41 hr
Nov 3, 3:23 PM MDT	Winter Storm Watch	CYS	11 hr
Nov 3, 4:43 PM MDT	High Wind Warning	CYS	21 hr
Nov 4, 2:30 AM MDT	Winter Storm Warning	CYS	70 hr
Nov 6, 3:09 AM MST	Winter Weather Advisory	CYS	29 hr
Nov 7, 7:49 AM MST	Dense Fog Advisory	CYS	2 hr
Nov 15, 1:51 AM MST	High Wind Watch	CYS	25 hr
Nov 15, 1:59 AM MST	Winter Storm Watch	CYS	25 hr
Nov 15, 2:44 PM MST	High Wind Warning	CYS	26 hr
Nov 16, 2:30 AM MST	Winter Storm Warning	CYS	45 hr
Nov 17, 3:00 AM MST	Winter Weather Advisory	CYS	20 hr
Nov 18, 2:49 AM MST	High Wind Watch	CYS	23 hr
Nov 19, 1:30 AM MST	High Wind Watch	CYS	23 hr
Nov 19, 1:30 AM MST	High Wind Warning	CYS	49 hr
Nov 21, 2:05 AM MST	Winter Weather Advisory	CYS	7 hr
Nov 21, 2:34 PM MST	High Wind Warning	CYS	19 hr
Nov 22, 2:31 PM MST	High Wind Watch	CYS	12 hr
Nov 23, 2:39 AM MST	High Wind Warning	CYS	32 hr
Nov 27, 3:17 AM MST	High Wind Warning	CYS	11 hr
Nov 28, 2:26 AM MST	High Wind Watch	CYS	11 hr
Nov 28, 1:38 PM MST	High Wind Warning	CYS	24 hr
Nov 30, 7:52 PM MST	High Wind Warning	CYS	5 hr
Dec 1, 1:53 PM MST	Winter Storm Watch	CYS	47 hr
Dec 2, 12:58 PM MST	High Wind Warning	CYS	21 hr
Dec 2, 1:05 PM MST	Winter Storm Warning	CYS	46 hr
Dec 3, 2:47 AM MST	Winter Weather Advisory	CYS	32 hr
Dec 5, 4:17 AM MST	High Wind Warning	CYS	10 hr
Dec 14, 1:04 AM MST	High Wind Watch	CYS	19 hr
Dec 14, 2:24 PM MST	High Wind Warning	CYS	29 hr
Dec 15, 1:09 PM MST	Winter Weather Advisory	CYS	38 hr
Dec 17, 1:19 PM MST	High Wind Watch	CYS	8 hr
Dec 17, 4:05 PM MST	High Wind Warning	CYS	25 hr
Dec 19, 1:08 PM MST	High Wind Watch	CYS	8 hr
Dec 19, 9:26 PM MST	High Wind Warning	CYS	13 hr
Dec 20, 2:37 AM MST	Winter Weather Advisory	CYS	35 hr
Dec 21, 2:04 PM MST	Winter Storm Watch	CYS	24 hr
Dec 22, 2:06 AM MST	Winter Storm Warning	CYS	45 hr
Dec 22, 2:14 PM MST	Blizzard Warning	CYS	29 hr
Dec 22, 2:14 PM MST	Winter Weather Advisory	CYS	32 hr
Dec 23, 10:38 PM MST	Wind Chill Advisory	CYS	9 hr
Dec 24, 2:20 AM MST	Winter Weather Advisory	CYS	11 hr
Dec 24, 8:14 AM MST	Winter Weather Advisory	CYS	5 hr
Dec 24, 1:14 PM MST	Blizzard Warning	CYS	28 hr
Dec 24, 1:14 PM MST	Winter Storm Warning	CYS	41 hr
Dec 24, 1:14 PM MST	Winter Weather Advisory	CYS	37 hr
Dec 26, 12:39 PM MST	High Wind Warning	CYS	4 days
Dec 27, 1:22 PM MST	High Wind Watch	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	6
Severe Thunderstorm Watch	1
Mesoscale Discussion	2
Special Weather Statement	7
Flooding
Areal Flood Advisory	3
Winter
Blizzard Warning	3
Winter Storm Warning	17
Winter Storm Watch	17
Winter Weather Advisory	32
Cold
Wind Chill Warning	1
Frost Advisory	2
Wind Chill Advisory	3
Wind and dust
High Wind Warning	36
High Wind Watch	28
Fog and smoke
Dense Fog Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.