Weather alerts in Carbon County, Wyoming, 2010

136 weather alerts in 2010, 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 2010. Tap one for its archive.

Alerts: 136
Warnings: 64
Watches: 35
Advisories: 36
Busiest month: December30 alerts
Busiest day: July 4, 20105 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 warnings covering Carbon County in 2010 had a tornado report inside them.

Carbon County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	6	3	50%	6	33%	19 min
Flash flood warnings	0			0

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Cheyenne, WY: tornado warnings	44	20	55%	47	72%	15 min
NWS Cheyenne, WY: severe thunderstorm warnings	180	94	48%	354	71%	23 min
NWS Cheyenne, WY: flash flood warnings	17	9	47%	40	83%	57 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 5, 4:27 AM MST	Winter Weather Advisory	CYS	38 hr
Jan 6, 2:38 PM MST	Wind Chill Warning	CYS	12 hr
Jan 6, 2:38 PM MST	Wind Chill Advisory	CYS	12 hr
Jan 7, 1:49 PM MST	Wind Chill Warning	CYS	21 hr
Jan 7, 1:49 PM MST	Wind Chill Advisory	CYS	21 hr
Jan 23, 1:18 PM MST	Winter Weather Advisory	CYS	28 hr
Feb 12, 3:00 PM MST	Winter Weather Advisory	CYS	42 hr
Feb 17, 12:14 PM MST	Winter Weather Advisory	CYS	38 hr
Feb 19, 1:59 PM MST	Winter Storm Watch	CYS	7 hr
Feb 19, 8:54 PM MST	Winter Storm Warning	CYS	31 hr
Feb 19, 8:54 PM MST	Winter Weather Advisory	CYS	31 hr
Mar 4, 4:53 AM MST	Winter Storm Watch	CYS	10 hr
Mar 4, 2:38 PM MST	Winter Weather Advisory	CYS	38 hr
Mar 17, 2:35 PM MDT	Winter Storm Watch	CYS	23 hr
Mar 18, 3:27 AM MDT	Winter Weather Advisory	CYS	34 hr
Mar 18, 1:09 PM MDT	Winter Storm Warning	CYS	24 hr
Mar 22, 2:43 PM MDT	Winter Weather Advisory	CYS	33 hr
Mar 28, 12:07 PM MDT	High Wind Watch	CYS	17 hr
Mar 29, 4:48 AM MDT	High Wind Warning	CYS	39 hr
Mar 31, 4:50 AM MDT	Winter Storm Watch	CYS	10 hr
Mar 31, 2:48 PM MDT	Winter Weather Advisory	CYS	39 hr
Apr 2, 2:18 PM MDT	High Wind Watch	CYS	10 hr
Apr 3, 12:00 AM MDT	High Wind Warning	CYS	19 hr
Apr 4, 9:08 PM MDT	Winter Storm Watch	CYS	8 hr
Apr 5, 5:13 AM MDT	Winter Storm Warning	CYS	41 hr
Apr 5, 3:15 PM MDT	Winter Weather Advisory	CYS	39 hr
Apr 12, 4:00 PM MDT	High Wind Watch	CYS	12 hr
Apr 13, 3:34 AM MDT	High Wind Warning	CYS	16 hr
Apr 22, 2:49 PM MDT	Winter Storm Watch	CYS	20 hr
Apr 22, 2:49 PM MDT	Winter Storm Warning	CYS	39 hr
May 2, 3:52 PM MDT	High Wind Watch	CYS	18 hr
May 3, 10:21 AM MDT	High Wind Warning	CYS	33 hr
May 10, 5:00 AM MDT	Winter Storm Watch	CYS	23 hr
May 10, 6:05 AM MDT	Dense Fog Advisory	CYS	2 hr
May 11, 3:49 AM MDT	Winter Storm Warning	CYS	34 hr
May 11, 3:49 AM MDT	Winter Weather Advisory	CYS	34 hr
May 20, 8:11 AM MDT	Areal Flood Warning	CYS	28 hr
May 20, 8:12 AM MDT	Areal Flood Warning	CYS	28 hr
May 21, 8:20 AM MDT	Areal Flood Warning	CYS	8 hr
May 21, 4:39 PM MDT	Flood Watch	CYS	30 hr
May 23, 10:40 AM MDT	High Wind Watch	CYS	31 hr
May 24, 3:47 AM MDT	High Wind Warning	CYS	16 hr
Jun 5, 5:18 AM MDT	Areal Flood Warning	CYS	24 hr
Jun 5, 1:05 PM MDT	Areal Flood Warning	CYS	3 hr
Jun 5, 3:36 PM MDT	River Flood Warning	CYS	12 days
Jun 6, 7:29 AM MDT	Areal Flood Warning	CYS	24 hr
Jun 6, 3:11 PM MDT	Severe Thunderstorm Warning	CYS	49 min
Jun 6, 3:28 PM MDT	Severe Thunderstorm Warning	CYS	27 min
Jun 7, 6:40 AM MDT	Areal Flood Warning	CYS	24 hr
Jun 7, 1:49 PM MDT	Mesoscale Discussion	SPC	86 min
Jun 7, 10:47 PM MDT	Areal Flood Advisory	CYS	24 hr
Jun 8, 11:44 AM MDT	Areal Flood Warning	CYS	24 hr
Jun 8, 2:28 PM MDT	Areal Flood Warning	CYS	4 days
Jun 9, 11:40 AM MDT	Areal Flood Warning	CYS	24 hr
Jun 9, 6:28 PM MDT	Areal Flood Warning	CYS	16 hr
Jun 10, 10:00 AM MDT	Areal Flood Warning	CYS	6 hr
Jun 10, 9:56 PM MDT	Areal Flood Warning	CYS	60 hr
Jun 13, 12:06 PM MDT	River Flood Warning	CYS	72 hr
Jun 13, 12:38 PM MDT	Areal Flood Warning	CYS	23 hr
Jun 14, 11:59 AM MDT	River Flood Warning	CYS	72 hr
Jun 15, 2:49 PM MDT	High Wind Watch	CYS	12 hr
Jun 16, 3:16 AM MDT	High Wind Warning	CYS	35 hr
Jun 17, 12:04 PM MDT	River Flood Warning	CYS	3 hr
Jul 4, 12:37 PM MDT	Severe Thunderstorm Warning	CYS	35 min
Jul 4, 12:39 PM MDT	Tornado Watch	SPC	8 hr
Jul 4, 1:54 PM MDT	Severe Thunderstorm Warning	CYS	46 min
Jul 4, 2:38 PM MDT	Severe Thunderstorm Warning	CYS	27 min
Jul 4, 3:02 PM MDT	Tornado Warning	CYS	43 min
Jul 6, 5:09 PM MDT	Severe Thunderstorm Warning	CYS	30 min
Jul 21, 2:49 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 1, 10:17 AM MDT	Flash Flood Watch	CYS	10 hr
Sep 2, 2:44 PM MDT	Frost Advisory	CYS	17 hr
Sep 6, 2:49 AM MDT	Freeze Watch	CYS	12 hr
Sep 6, 3:02 PM MDT	Freeze Warning	CYS	17 hr
Oct 7, 1:53 PM MDT	Severe Thunderstorm Watch	SPC	6 hr
Oct 12, 10:07 AM MDT	Freeze Watch	CYS	4 hr
Oct 22, 3:53 AM MDT	Winter Storm Watch	CYS	49 hr
Oct 22, 3:53 AM MDT	Winter Weather Advisory	CYS	34 hr
Oct 23, 1:52 PM MDT	High Wind Watch	CYS	15 hr
Oct 24, 4:55 AM MDT	High Wind Watch	CYS	8 hr
Oct 24, 4:55 AM MDT	High Wind Warning	CYS	37 hr
Oct 24, 5:08 AM MDT	Winter Storm Warning	CYS	47 hr
Nov 8, 2:41 PM MST	Winter Weather Advisory	CYS	30 hr
Nov 13, 2:49 AM MST	Winter Weather Advisory	CYS	17 hr
Nov 14, 2:03 AM MST	Winter Weather Advisory	CYS	25 hr
Nov 14, 2:10 PM MST	Winter Storm Watch	CYS	26 hr
Nov 14, 3:05 PM MST	High Wind Watch	CYS	23 hr
Nov 15, 2:56 AM MST	Winter Storm Warning	CYS	11 hr
Nov 15, 1:37 PM MST	High Wind Warning	CYS	28 hr
Nov 15, 3:41 PM MST	Winter Storm Warning	CYS	36 hr
Nov 17, 3:38 AM MST	High Wind Watch	CYS	11 hr
Nov 17, 2:10 PM MST	High Wind Warning	CYS	25 hr
Nov 20, 6:50 AM MST	High Wind Warning	CYS	7 hr
Nov 20, 1:01 PM MST	Winter Storm Warning	CYS	53 hr
Nov 21, 5:23 PM MST	Winter Weather Advisory	CYS	6 hr
Nov 22, 1:45 PM MST	Winter Storm Watch	CYS	24 hr
Nov 23, 3:39 AM MST	Winter Storm Warning	CYS	25 hr
Nov 23, 2:10 PM MST	Winter Weather Advisory	CYS	15 hr
Nov 24, 4:52 AM MST	Winter Weather Advisory	CYS	6 hr
Nov 24, 3:06 PM MST	Wind Chill Warning	CYS	17 hr
Nov 24, 3:49 PM MST	High Wind Watch	CYS	13 hr
Nov 24, 6:05 PM MST	Wind Chill Advisory	CYS	14 hr
Nov 24, 9:39 PM MST	High Wind Warning	CYS	30 hr
Nov 26, 4:27 AM MST	High Wind Warning	CYS	5 hr
Nov 27, 2:23 AM MST	Winter Weather Advisory	CYS	64 hr
Nov 30, 3:54 AM MST	High Wind Warning	CYS	37 hr
Dec 2, 5:22 AM MST	High Wind Watch	CYS	6 hr
Dec 2, 11:15 AM MST	High Wind Warning	CYS	27 hr
Dec 4, 3:59 AM MST	Winter Weather Advisory	CYS	26 hr
Dec 5, 3:09 PM MST	Winter Weather Advisory	CYS	38 hr
Dec 6, 2:02 AM MST	Dense Fog Advisory	CYS	11 hr
Dec 7, 2:51 AM MST	High Wind Watch	CYS	22 hr
Dec 8, 12:29 AM MST	High Wind Warning	CYS	31 hr
Dec 9, 9:14 PM MST	High Wind Warning	CYS	23 hr
Dec 10, 4:01 AM MST	Winter Weather Advisory	CYS	24 hr
Dec 12, 3:57 AM MST	High Wind Watch	CYS	9 hr
Dec 12, 12:27 PM MST	High Wind Warning	CYS	23 hr
Dec 13, 11:18 AM MST	High Wind Watch	CYS	9 hr
Dec 13, 8:31 PM MST	High Wind Warning	CYS	29 hr
Dec 14, 2:31 PM MST	Winter Weather Advisory	CYS	27 hr
Dec 18, 3:24 AM MST	Winter Storm Watch	CYS	5 hr
Dec 18, 8:33 AM MST	Winter Storm Warning	CYS	50 hr
Dec 19, 9:22 AM MST	Winter Weather Advisory	CYS	25 hr
Dec 20, 12:13 PM MST	Winter Storm Warning	CYS	39 hr
Dec 20, 12:13 PM MST	Winter Weather Advisory	CYS	32 hr
Dec 22, 2:59 AM MST	Winter Weather Advisory	CYS	33 hr
Dec 25, 3:08 AM MST	Dense Fog Advisory	CYS	6 hr
Dec 25, 9:06 AM MST	Dense Fog Advisory	CYS	3 hr
Dec 25, 2:49 PM MST	Dense Fog Advisory	CYS	18 hr
Dec 27, 2:50 AM MST	High Wind Warning	CYS	8 hr
Dec 27, 2:21 PM MST	High Wind Watch	CYS	21 hr
Dec 28, 12:20 AM MST	High Wind Warning	CYS	9 hr
Dec 28, 11:15 AM MST	High Wind Warning	CYS	27 hr
Dec 28, 2:52 PM MST	Winter Storm Watch	CYS	22 hr
Dec 29, 4:12 AM MST	Winter Storm Warning	CYS	57 hr
Dec 31, 1:30 PM MST	Wind Chill Warning	CYS	23 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
Tornado Warning	1
Severe Thunderstorm Watch	2
Tornado Watch	1
Mesoscale Discussion	1
Flooding
Areal Flood Warning	14
River Flood Warning	4
Flash Flood Watch	1
Flood Watch	1
Areal Flood Advisory	1
Winter
Winter Storm Warning	13
Winter Storm Watch	12
Winter Weather Advisory	26
Cold
Freeze Warning	1
Wind Chill Warning	4
Freeze Watch	2
Frost Advisory	1
Wind Chill Advisory	3
Wind and dust
High Wind Warning	21
High Wind Watch	16
Fog and smoke
Dense Fog Advisory	5

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2009 2011

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.