Weather alerts in Carbon County, Wyoming, 2011

178 weather alerts in 2011, 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 2011. Tap one for its archive.

Alerts: 178
Warnings: 80
Watches: 55
Advisories: 37
Busiest month: January31 alerts
Busiest day: January 15, 20115 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, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			0
Severe thunderstorm warnings	2	0	100%	5	0%
Flash flood warnings	0			1	0%

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	34	11	68%	18	83%	12 min
NWS Cheyenne, WY: severe thunderstorm warnings	197	99	50%	282	73%	20 min
NWS Cheyenne, WY: flash flood warnings	25	18	28%	50	90%	81 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, 3:59 AM MST	High Wind Watch	CYS	6 hr
Jan 1, 10:27 AM MST	High Wind Warning	CYS	26 hr
Jan 3, 12:36 PM MST	High Wind Watch	CYS	15 hr
Jan 4, 3:24 AM MST	High Wind Warning	CYS	60 hr
Jan 5, 3:47 AM MST	High Wind Watch	CYS	13 hr
Jan 7, 8:30 PM MST	Winter Storm Watch	CYS	18 hr
Jan 8, 2:59 PM MST	Winter Weather Advisory	CYS	32 hr
Jan 9, 6:34 PM MST	Wind Chill Advisory	CYS	9 hr
Jan 10, 3:02 PM MST	Wind Chill Warning	CYS	18 hr
Jan 12, 2:43 AM MST	High Wind Watch	CYS	12 hr
Jan 12, 9:34 AM MST	High Wind Warning	CYS	25 hr
Jan 14, 11:38 PM MST	High Wind Warning	CYS	11 hr
Jan 15, 3:33 AM MST	Winter Storm Watch	CYS	11 hr
Jan 15, 3:45 AM MST	High Wind Watch	CYS	11 hr
Jan 15, 2:46 PM MST	High Wind Warning	CYS	43 hr
Jan 15, 2:49 PM MST	Winter Storm Warning	CYS	59 hr
Jan 18, 3:52 PM MST	Winter Weather Advisory	CYS	23 hr
Jan 19, 5:20 AM MST	Winter Storm Warning	CYS	9 hr
Jan 19, 3:00 PM MST	High Wind Watch	CYS	11 hr
Jan 20, 2:15 AM MST	High Wind Warning	CYS	30 hr
Jan 21, 3:36 AM MST	Winter Storm Watch	CYS	10 hr
Jan 21, 9:45 AM MST	High Wind Watch	CYS	4 hr
Jan 21, 1:43 PM MST	High Wind Warning	CYS	18 hr
Jan 21, 2:05 PM MST	Winter Storm Warning	CYS	33 hr
Jan 23, 8:08 AM MST	High Wind Warning	CYS	13 hr
Jan 24, 9:00 PM MST	High Wind Warning	CYS	11 hr
Jan 26, 6:11 PM MST	High Wind Warning	CYS	14 hr
Jan 27, 10:43 AM MST	High Wind Warning	CYS	21 hr
Jan 30, 2:38 PM MST	Wind Chill Watch	CYS	14 hr
Jan 30, 2:38 PM MST	Winter Weather Advisory	CYS	23 hr
Jan 31, 4:08 AM MST	Wind Chill Warning	CYS	54 hr
Feb 2, 2:30 PM MST	Wind Chill Advisory	CYS	16 hr
Feb 4, 3:54 AM MST	Winter Storm Watch	CYS	11 hr
Feb 4, 2:40 PM MST	Winter Weather Advisory	CYS	18 hr
Feb 4, 8:43 PM MST	High Wind Warning	CYS	8 hr
Feb 5, 8:38 AM MST	Winter Storm Warning	CYS	19 hr
Feb 5, 11:24 AM MST	Winter Weather Advisory	CYS	11 hr
Feb 6, 3:10 AM MST	Winter Storm Warning	CYS	55 hr
Feb 6, 3:10 AM MST	Winter Weather Advisory	CYS	17 hr
Feb 6, 9:12 AM MST	High Wind Watch	CYS	3 hr
Feb 6, 12:29 PM MST	High Wind Warning	CYS	26 hr
Feb 7, 4:45 AM MST	Winter Weather Advisory	CYS	33 hr
Feb 8, 2:57 PM MST	Wind Chill Warning	CYS	19 hr
Feb 9, 10:27 AM MST	High Wind Warning	CYS	43 hr
Feb 9, 2:46 PM MST	Wind Chill Advisory	CYS	17 hr
Feb 11, 5:01 AM MST	High Wind Watch	CYS	5 hr
Feb 11, 10:03 AM MST	High Wind Warning	CYS	56 hr
Feb 12, 4:39 AM MST	High Wind Watch	CYS	6 hr
Feb 14, 3:22 AM MST	High Wind Watch	CYS	8 hr
Feb 14, 11:15 AM MST	High Wind Warning	CYS	23 hr
Feb 16, 1:01 AM MST	High Wind Warning	CYS	40 hr
Feb 16, 2:19 AM MST	Winter Storm Warning	CYS	37 hr
Feb 16, 2:19 AM MST	Winter Weather Advisory	CYS	37 hr
Feb 19, 4:08 AM MST	Winter Storm Watch	CYS	10 hr
Feb 19, 2:31 PM MST	Winter Storm Warning	CYS	16 hr
Feb 19, 2:31 PM MST	Winter Weather Advisory	CYS	26 hr
Feb 20, 6:34 AM MST	High Wind Warning	CYS	68 hr
Feb 23, 2:39 PM MST	Winter Storm Watch	CYS	13 hr
Feb 24, 3:28 AM MST	Winter Storm Warning	CYS	41 hr
Feb 24, 3:28 AM MST	Winter Weather Advisory	CYS	51 hr
Feb 27, 2:51 AM MST	High Wind Watch	CYS	10 hr
Feb 27, 12:28 PM MST	High Wind Warning	CYS	40 hr
Mar 2, 3:38 PM MST	High Wind Warning	CYS	11 hr
Mar 5, 3:47 PM MST	Winter Storm Watch	CYS	11 hr
Mar 6, 2:32 AM MST	Winter Weather Advisory	CYS	27 hr
Mar 7, 1:50 PM MST	Winter Weather Advisory	CYS	28 hr
Mar 9, 2:12 PM MST	High Wind Warning	CYS	50 hr
Mar 10, 12:49 AM MST	High Wind Watch	CYS	3 hr
Mar 15, 12:33 PM MDT	High Wind Warning	CYS	26 hr
Mar 16, 4:30 AM MDT	Winter Storm Watch	CYS	10 hr
Mar 16, 2:15 PM MDT	Winter Storm Warning	CYS	36 hr
Mar 16, 3:47 PM MDT	High Wind Warning	CYS	3 hr
Mar 17, 3:39 PM MDT	Winter Weather Advisory	CYS	11 hr
Mar 18, 6:03 PM MDT	High Wind Watch	CYS	21 hr
Mar 19, 9:31 AM MDT	High Wind Warning	CYS	5 hr
Mar 19, 2:45 PM MDT	High Wind Warning	CYS	19 hr
Mar 21, 4:21 AM MDT	High Wind Watch	CYS	11 hr
Mar 21, 3:11 PM MDT	High Wind Warning	CYS	37 hr
Mar 23, 8:34 AM MDT	High Wind Warning	CYS	5 hr
Mar 24, 9:26 AM MDT	High Wind Watch	CYS	10 hr
Mar 24, 7:42 PM MDT	High Wind Warning	CYS	8 hr
Mar 28, 2:35 PM MDT	Winter Weather Advisory	CYS	18 hr
Mar 29, 2:39 PM MDT	High Wind Watch	CYS	14 hr
Mar 30, 5:00 AM MDT	High Wind Warning	CYS	39 hr
Apr 1, 2:53 PM MDT	High Wind Watch	CYS	9 hr
Apr 1, 11:26 PM MDT	High Wind Warning	CYS	27 hr
Apr 1, 11:34 PM MDT	Winter Storm Watch	CYS	11 hr
Apr 2, 10:44 AM MDT	Winter Storm Warning	CYS	34 hr
Apr 3, 4:41 AM MDT	Winter Weather Advisory	CYS	8 hr
Apr 3, 2:41 PM MDT	High Wind Watch	CYS	22 hr
Apr 4, 2:29 AM MDT	High Wind Warning	CYS	43 hr
Apr 13, 8:01 AM MDT	Flash Flood Watch	CYS	6 days
Apr 14, 10:23 AM MDT	Winter Weather Advisory	CYS	11 hr
Apr 17, 6:19 AM MDT	High Wind Warning	CYS	8 hr
Apr 18, 3:39 AM MDT	Winter Weather Advisory	CYS	8 hr
Apr 18, 12:05 PM MDT	Winter Storm Warning	CYS	15 hr
Apr 20, 2:37 PM MDT	High Wind Watch	CYS	19 hr
Apr 21, 9:40 AM MDT	High Wind Warning	CYS	34 hr
Apr 25, 3:46 PM MDT	Winter Weather Advisory	CYS	26 hr
May 11, 8:12 AM MDT	Winter Weather Advisory	CYS	28 hr
May 14, 11:22 AM MDT	Flood Watch	CYS	3 days
May 17, 11:27 AM MDT	River Flood Warning	CYS	26 hr
May 17, 3:26 PM MDT	Flood Watch	CYS	64 hr
May 18, 2:06 PM MDT	Areal Flood Warning	CYS	20 hr
May 18, 4:04 PM MDT	Winter Weather Advisory	CYS	19 hr
May 19, 10:32 AM MDT	Areal Flood Warning	CYS	23 hr
May 23, 6:57 AM MDT	Areal Flood Warning	CYS	53 hr
May 23, 8:18 PM MDT	Flood Watch	CYS	38 hr
May 25, 12:15 PM MDT	Flood Watch	CYS	32 hr
May 28, 8:53 PM MDT	Flood Watch	CYS	33 hr
May 29, 4:38 AM MDT	High Wind Watch	CYS	23 hr
May 29, 7:00 PM MDT	Flood Watch	CYS	45 hr
May 30, 3:13 AM MDT	High Wind Warning	CYS	17 hr
May 30, 12:57 PM MDT	River Flood Warning	CYS	46 days
May 30, 9:49 PM MDT	Areal Flood Advisory	CYS	6 hr
May 31, 3:11 PM MDT	Areal Flood Warning	CYS	43 hr
May 31, 3:38 PM MDT	Flood Watch	CYS	7 days
Jun 2, 10:11 AM MDT	Areal Flood Warning	CYS	8 days
Jun 2, 11:15 AM MDT	River Flood Warning	CYS	35 days
Jun 2, 11:50 AM MDT	High Wind Warning	CYS	6 hr
Jun 3, 9:31 PM MDT	River Flood Warning	CYS	18 days
Jun 5, 9:07 AM MDT	River Flood Warning	CYS	3 days
Jun 7, 11:17 AM MDT	High Wind Warning	CYS	4 hr
Jun 18, 11:01 AM MDT	Flood Watch	CYS	48 hr
Jun 23, 9:56 AM MDT	River Flood Warning	CYS	5 days
Jun 29, 6:45 PM MDT	Severe Thunderstorm Warning	CYS	38 min
Jun 30, 11:16 AM MDT	River Flood Warning	CYS	34 hr
Jun 30, 11:57 AM MDT	Mesoscale Discussion	SPC	63 min
Jun 30, 12:18 PM MDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 30, 4:17 PM MDT	Mesoscale Discussion	SPC	118 min
Jul 8, 10:01 PM MDT	River Flood Warning	CYS	53 hr
Jul 19, 12:38 AM MDT	Areal Flood Advisory	CYS	3 hr
Aug 15, 3:45 PM MDT	Special Weather Statement	CYS	30 min
Aug 15, 4:00 PM MDT	Severe Thunderstorm Warning	CYS	60 min
Aug 15, 5:10 PM MDT	Special Weather Statement	CYS	35 min
Aug 15, 10:40 PM MDT	Special Weather Statement	CYS	50 min
Aug 31, 1:52 PM MDT	Special Weather Statement	CYS	53 min
Sep 3, 11:26 AM MDT	Frost Advisory	CYS	21 hr
Sep 20, 7:51 PM MDT	Frost Advisory	CYS	12 hr
Oct 5, 9:50 PM MDT	High Wind Watch	CYS	6 hr
Oct 6, 3:34 AM MDT	High Wind Warning	CYS	35 hr
Oct 7, 3:04 PM MDT	Winter Weather Advisory	CYS	36 hr
Oct 13, 5:31 AM MDT	High Wind Warning	CYS	4 hr
Oct 16, 3:04 PM MDT	Winter Weather Advisory	CYS	21 hr
Oct 23, 2:35 PM MDT	Winter Storm Watch	CYS	24 hr
Oct 24, 2:57 PM MDT	Winter Storm Warning	CYS	45 hr
Oct 24, 2:57 PM MDT	Winter Weather Advisory	CYS	45 hr
Oct 28, 2:22 AM MDT	High Wind Watch	CYS	8 hr
Oct 28, 10:12 AM MDT	High Wind Warning	CYS	32 hr
Oct 31, 3:07 AM MDT	Winter Storm Watch	CYS	12 hr
Oct 31, 2:52 PM MDT	Winter Storm Warning	CYS	42 hr
Oct 31, 2:52 PM MDT	Winter Weather Advisory	CYS	37 hr
Nov 4, 2:33 PM MDT	Winter Weather Advisory	CYS	30 hr
Nov 4, 2:50 PM MDT	High Wind Watch	CYS	11 hr
Nov 5, 2:06 AM MDT	High Wind Warning	CYS	27 hr
Nov 10, 10:40 AM MST	High Wind Watch	CYS	16 hr
Nov 10, 3:02 PM MST	Winter Storm Watch	CYS	11 hr
Nov 11, 2:17 AM MST	High Wind Warning	CYS	4 days
Nov 11, 2:28 AM MST	Winter Storm Warning	CYS	65 hr
Nov 15, 1:41 PM MST	High Wind Watch	CYS	14 hr
Nov 16, 3:12 AM MST	High Wind Warning	CYS	50 hr
Nov 18, 3:15 AM MST	Winter Weather Advisory	CYS	25 hr
Nov 22, 11:58 AM MST	High Wind Warning	CYS	10 hr
Nov 23, 1:50 PM MST	High Wind Watch	CYS	25 hr
Nov 24, 2:50 PM MST	High Wind Warning	CYS	30 hr
Nov 29, 3:43 AM MST	Winter Storm Watch	CYS	24 hr
Nov 29, 7:48 PM MST	Winter Storm Warning	CYS	39 hr
Nov 30, 3:31 AM MST	Winter Weather Advisory	CYS	31 hr
Dec 2, 2:26 PM MST	Winter Weather Advisory	CYS	18 hr
Dec 2, 8:03 PM MST	Winter Storm Warning	CYS	6 hr
Dec 5, 2:33 AM MST	Wind Chill Advisory	CYS	30 hr
Dec 20, 2:42 PM MST	Winter Weather Advisory	CYS	40 hr
Dec 24, 2:10 PM MST	High Wind Watch	CYS	13 hr
Dec 25, 2:52 AM MST	High Wind Warning	CYS	30 hr
Dec 26, 3:13 PM MST	High Wind Watch	CYS	23 hr
Dec 27, 10:15 AM MST	High Wind Warning	CYS	4 days
Dec 27, 2:29 PM MST	High Wind Watch	CYS	19 hr
Dec 29, 8:59 PM MST	High Wind Watch	CYS	15 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	2
Severe Thunderstorm Watch	1
Mesoscale Discussion	2
Special Weather Statement	4
Flooding
Areal Flood Warning	5
River Flood Warning	8
Flash Flood Watch	1
Flood Watch	8
Areal Flood Advisory	2
Winter
Winter Storm Warning	16
Winter Storm Watch	13
Winter Weather Advisory	29
Cold
Wind Chill Warning	3
Wind Chill Watch	1
Frost Advisory	2
Wind Chill Advisory	4
Wind and dust
High Wind Warning	46
High Wind Watch	31

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2010 2012

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.