Alert archive / Wyoming / Fremont County

Weather alerts in Fremont County, Wyoming, 2010

205 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Fremont County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts: 205
Warnings: 66
Watches: 50
Advisories: 46
Busiest month: August29 alerts
Busiest day: June 22, 20107 alerts

Over time

By month

Warning verification

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

Fremont County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning
Tornado warnings	0			0
Severe thunderstorm warnings	3	1	67%	3	0%
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 Riverton, WY: tornado warnings	4	1	75%	1	100%	1 min
NWS Riverton, WY: severe thunderstorm warnings	42	8	81%	34	32%	20 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 4, 3:09 PM MST	Winter Storm Watch	RIW	36 hr
Jan 4, 3:09 PM MST	Winter Storm Warning	RIW	46 hr
Jan 4, 3:09 PM MST	Winter Weather Advisory	RIW	50 hr
Jan 22, 11:49 AM MST	Winter Weather Advisory	RIW	47 hr
Jan 29, 7:28 AM MST	Dense Fog Advisory	RIW	4 hr
Jan 30, 2:28 AM MST	Winter Storm Watch	RIW	13 hr
Jan 30, 3:14 PM MST	Winter Storm Warning	RIW	19 hr
Jan 30, 3:14 PM MST	Winter Weather Advisory	RIW	41 hr
Feb 3, 2:03 PM MST	Winter Weather Advisory	RIW	23 hr
Feb 11, 10:34 AM MST	Winter Storm Warning	RIW	51 hr
Feb 11, 10:34 AM MST	Winter Weather Advisory	RIW	63 hr
Feb 17, 2:34 PM MST	Winter Weather Advisory	RIW	22 hr
Feb 19, 3:27 PM MST	Winter Weather Advisory	RIW	42 hr
Feb 24, 2:57 AM MST	Winter Weather Advisory	RIW	23 hr
Mar 1, 3:34 PM MST	Dense Fog Advisory	RIW	11 hr
Mar 4, 2:58 AM MST	Winter Storm Watch	RIW	14 hr
Mar 4, 4:50 PM MST	Winter Weather Advisory	RIW	31 hr
Mar 5, 3:48 AM MST	Winter Storm Warning	RIW	11 hr
Mar 9, 3:15 PM MST	Winter Weather Advisory	RIW	9 hr
Mar 17, 2:04 PM MDT	Winter Storm Watch	RIW	22 hr
Mar 18, 11:55 AM MDT	Winter Storm Warning	RIW	30 hr
Mar 18, 11:55 AM MDT	Winter Weather Advisory	RIW	33 hr
Mar 20, 7:21 AM MDT	Dense Fog Advisory	RIW	4 hr
Mar 21, 9:14 PM MDT	Winter Weather Advisory	RIW	45 hr
Mar 23, 9:29 AM MDT	Winter Storm Warning	RIW	12 hr
Mar 28, 10:28 AM MDT	High Wind Watch	RIW	11 hr
Mar 28, 3:24 PM MDT	Winter Storm Watch	RIW	48 hr
Mar 28, 9:18 PM MDT	High Wind Watch	RIW	6 hr
Mar 28, 9:18 PM MDT	High Wind Warning	RIW	47 hr
Mar 29, 2:16 PM MDT	Winter Storm Warning	RIW	37 hr
Mar 30, 2:44 AM MDT	Winter Weather Advisory	RIW	24 hr
Mar 30, 3:01 PM MDT	Winter Storm Watch	RIW	24 hr
Mar 30, 4:15 PM MDT	Special Weather Statement	RIW	30 min
Mar 31, 2:51 PM MDT	Winter Storm Warning	RIW	39 hr
Mar 31, 2:51 PM MDT	Winter Weather Advisory	RIW	42 hr
Apr 2, 11:16 AM MDT	High Wind Watch	RIW	15 hr
Apr 2, 2:53 PM MDT	High Wind Warning	RIW	27 hr
Apr 2, 3:40 PM MDT	Winter Weather Advisory	RIW	23 hr
Apr 5, 2:59 AM MDT	Winter Weather Advisory	RIW	9 hr
Apr 5, 11:39 AM MDT	Winter Storm Warning	RIW	39 hr
Apr 5, 11:39 AM MDT	Winter Weather Advisory	RIW	36 hr
Apr 6, 10:44 AM MDT	High Wind Warning	RIW	11 hr
Apr 12, 11:52 AM MDT	High Wind Watch	RIW	77 min
Apr 12, 1:09 PM MDT	High Wind Watch	RIW	11 hr
Apr 12, 2:39 PM MDT	Winter Weather Advisory	RIW	27 hr
Apr 13, 12:18 AM MDT	High Wind Warning	RIW	18 hr
Apr 21, 3:16 PM MDT	Special Weather Statement	RIW	44 min
Apr 21, 6:45 PM MDT	Special Weather Statement	RIW	45 min
Apr 22, 2:13 PM MDT	Winter Weather Advisory	RIW	22 hr
Apr 27, 2:24 PM MDT	Winter Weather Advisory	RIW	34 hr
Apr 27, 2:37 PM MDT	High Wind Watch	RIW	5 hr
Apr 27, 8:00 PM MDT	High Wind Warning	RIW	10 hr
Apr 29, 2:57 AM MDT	Winter Storm Watch	RIW	11 hr
Apr 29, 1:32 PM MDT	Winter Weather Advisory	RIW	25 hr
May 2, 2:40 PM MDT	High Wind Watch	RIW	38 hr
May 3, 3:23 AM MDT	High Wind Warning	RIW	40 hr
May 5, 1:21 PM MDT	Winter Weather Advisory	RIW	29 hr
May 10, 2:43 AM MDT	Winter Storm Watch	RIW	24 hr
May 10, 3:50 PM MDT	Winter Storm Warning	RIW	47 hr
May 10, 9:33 PM MDT	Winter Weather Advisory	RIW	41 hr
May 24, 3:17 AM MDT	Winter Weather Advisory	RIW	23 hr
May 28, 10:41 AM MDT	Flood Watch	RIW	24 hr
May 28, 1:14 PM MDT	High Wind Warning	RIW	6 hr
Jun 4, 6:28 PM MDT	Flood Watch	RIW	39 hr
Jun 4, 8:50 PM MDT	Areal Flood Warning	RIW	9 days
Jun 5, 11:49 AM MDT	River Flood Warning	RIW	8 days
Jun 6, 9:43 AM MDT	Flash Flood Watch	RIW	42 hr
Jun 6, 9:05 PM MDT	Special Weather Statement	RIW	40 min
Jun 7, 10:02 PM MDT	Flood Watch	RIW	41 hr
Jun 8, 12:14 PM MDT	River Flood Warning	RIW	57 hr
Jun 9, 12:35 PM MDT	River Flood Warning	RIW	33 hr
Jun 10, 2:40 PM MDT	Winter Storm Watch	RIW	25 hr
Jun 10, 5:29 PM MDT	Special Weather Statement	RIW	46 min
Jun 11, 2:01 PM MDT	River Flood Warning	RIW	22 hr
Jun 11, 3:49 PM MDT	Winter Storm Warning	RIW	44 hr
Jun 12, 11:57 AM MDT	Winter Weather Advisory	RIW	24 hr
Jun 13, 4:15 PM MDT	Flood Watch	RIW	5 days
Jun 16, 4:13 AM MDT	High Wind Watch	RIW	9 hr
Jun 16, 1:41 PM MDT	High Wind Warning	RIW	22 hr
Jun 20, 12:55 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 20, 3:55 PM MDT	Mesoscale Discussion	SPC	65 min
Jun 22, 11:58 AM MDT	Special Weather Statement	RIW	47 min
Jun 22, 1:18 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 1:22 PM MDT	Special Weather Statement	RIW	38 min
Jun 22, 2:00 PM MDT	Special Weather Statement	RIW	45 min
Jun 22, 2:42 PM MDT	Special Weather Statement	RIW	48 min
Jun 22, 2:42 PM MDT	Severe Thunderstorm Warning	RIW	63 min
Jun 22, 3:16 PM MDT	Special Weather Statement	RIW	44 min
Jun 29, 9:16 PM MDT	Special Weather Statement	RIW	44 min
Jun 30, 2:04 PM MDT	Special Weather Statement	RIW	41 min
Jul 1, 1:19 PM MDT	Special Weather Statement	RIW	41 min
Jul 3, 3:12 PM MDT	Special Weather Statement	RIW	48 min
Jul 9, 6:43 PM MDT	Special Weather Statement	RIW	47 min
Jul 9, 7:22 PM MDT	Special Weather Statement	RIW	38 min
Jul 10, 12:33 PM MDT	Special Weather Statement	RIW	42 min
Jul 10, 2:06 PM MDT	Special Weather Statement	RIW	39 min
Jul 10, 7:02 PM MDT	Special Weather Statement	RIW	43 min
Jul 11, 12:39 PM MDT	Special Weather Statement	RIW	51 min
Jul 11, 3:56 PM MDT	Special Weather Statement	RIW	34 min
Jul 21, 2:36 PM MDT	Severe Thunderstorm Warning	RIW	54 min
Jul 21, 10:42 PM MDT	Special Weather Statement	RIW	48 min
Jul 21, 10:58 PM MDT	Special Weather Statement	RIW	47 min
Jul 22, 12:22 AM MDT	Special Weather Statement	RIW	38 min
Aug 1, 4:07 PM MDT	Special Weather Statement	RIW	38 min
Aug 4, 12:26 PM MDT	Special Weather Statement	RIW	49 min
Aug 4, 12:58 PM MDT	Special Weather Statement	RIW	47 min
Aug 4, 5:00 PM MDT	Areal Flood Advisory	RIW	3 hr
Aug 6, 4:34 PM MDT	Special Weather Statement	RIW	41 min
Aug 10, 2:47 PM MDT	Fire Weather Watch	RIW	12 hr
Aug 11, 2:41 AM MDT	Red Flag Warning	RIW	16 hr
Aug 18, 2:47 AM MDT	Red Flag Warning	RIW	17 hr
Aug 20, 3:34 PM MDT	Fire Weather Watch	RIW	11 hr
Aug 21, 2:05 AM MDT	Red Flag Warning	RIW	22 hr
Aug 21, 2:57 PM MDT	Red Flag Warning	RIW	27 hr
Aug 22, 3:55 PM MDT	Special Weather Statement	RIW	50 min
Aug 22, 4:23 PM MDT	Special Weather Statement	RIW	37 min
Aug 22, 4:36 PM MDT	Severe Thunderstorm Warning	RIW	39 min
Aug 22, 4:51 PM MDT	Mesoscale Discussion	SPC	114 min
Aug 22, 8:17 PM MDT	Special Weather Statement	RIW	58 min
Aug 23, 3:54 PM MDT	Freeze Warning	RIW	17 hr
Aug 25, 3:16 AM MDT	Fire Weather Watch	RIW	25 hr
Aug 26, 3:58 AM MDT	Red Flag Warning	RIW	16 hr
Aug 26, 8:01 PM MDT	Red Flag Warning	RIW	24 hr
Aug 28, 11:59 AM MDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 28, 12:45 PM MDT	Special Weather Statement	RIW	45 min
Aug 28, 1:16 PM MDT	Special Weather Statement	RIW	44 min
Aug 28, 2:51 PM MDT	Mesoscale Discussion	SPC	54 min
Aug 28, 4:23 PM MDT	Special Weather Statement	RIW	52 min
Aug 28, 5:07 PM MDT	Special Weather Statement	RIW	38 min
Aug 28, 5:17 PM MDT	Special Weather Statement	RIW	28 min
Aug 30, 10:22 AM MDT	Special Weather Statement	RIW	38 min
Aug 30, 11:06 AM MDT	Special Weather Statement	RIW	39 min
Sep 4, 3:09 PM MDT	Fire Weather Watch	RIW	12 hr
Sep 5, 2:47 AM MDT	Red Flag Warning	RIW	17 hr
Sep 6, 2:54 PM MDT	Freeze Warning	RIW	18 hr
Sep 8, 1:20 PM MDT	Fire Weather Watch	RIW	13 hr
Sep 9, 2:36 AM MDT	Red Flag Warning	RIW	7 hr
Sep 9, 11:43 AM MDT	High Wind Warning	RIW	6 hr
Sep 9, 12:29 PM MDT	Special Weather Statement	RIW	46 min
Sep 11, 10:01 AM MDT	Red Flag Warning	RIW	10 hr
Sep 15, 8:17 PM MDT	Fire Weather Watch	RIW	6 hr
Sep 16, 2:34 AM MDT	Red Flag Warning	RIW	17 hr
Sep 18, 2:33 PM MDT	Fire Weather Watch	RIW	15 hr
Sep 19, 3:37 AM MDT	Red Flag Warning	RIW	16 hr
Sep 19, 2:46 PM MDT	Red Flag Warning	RIW	28 hr
Sep 20, 2:54 PM MDT	Red Flag Warning	RIW	29 hr
Sep 24, 2:07 AM MDT	Red Flag Warning	RIW	17 hr
Sep 25, 1:44 PM MDT	Fire Weather Watch	RIW	12 hr
Sep 26, 1:42 AM MDT	Red Flag Warning	RIW	16 hr
Sep 28, 3:08 AM MDT	Red Flag Warning	RIW	16 hr
Oct 7, 2:18 PM MDT	Special Weather Statement	RIW	42 min
Oct 12, 3:23 AM MDT	Freeze Watch	RIW	9 hr
Oct 12, 12:00 PM MDT	Freeze Warning	RIW	21 hr
Oct 14, 2:48 PM MDT	Fire Weather Watch	RIW	12 hr
Oct 15, 2:46 AM MDT	Red Flag Warning	RIW	16 hr
Oct 22, 9:32 PM MDT	Winter Storm Watch	RIW	29 hr
Oct 23, 9:28 PM MDT	High Wind Watch	RIW	5 hr
Oct 24, 2:37 AM MDT	High Wind Warning	RIW	16 hr
Oct 24, 2:41 AM MDT	Winter Storm Warning	RIW	33 hr
Oct 24, 2:41 AM MDT	Winter Weather Advisory	RIW	33 hr
Oct 25, 11:46 AM MDT	Winter Weather Advisory	RIW	30 hr
Oct 25, 2:00 PM MDT	Freeze Warning	RIW	18 hr
Nov 7, 3:29 PM MST	Winter Weather Advisory	RIW	45 hr
Nov 14, 3:12 AM MST	Winter Weather Advisory	RIW	29 hr
Nov 15, 3:09 PM MST	Winter Weather Advisory	RIW	28 hr
Nov 16, 3:24 AM MST	High Wind Warning	RIW	11 hr
Nov 17, 2:28 AM MST	High Wind Watch	RIW	12 hr
Nov 17, 2:28 PM MST	High Wind Warning	RIW	27 hr
Nov 18, 2:59 AM MST	Winter Storm Watch	RIW	48 hr
Nov 18, 3:29 PM MST	Winter Storm Warning	RIW	53 hr
Nov 20, 3:04 PM MST	Winter Weather Advisory	RIW	12 hr
Nov 21, 12:35 PM MST	Winter Weather Advisory	RIW	15 hr
Nov 21, 11:09 PM MST	Winter Storm Watch	RIW	17 hr
Nov 22, 3:12 PM MST	High Wind Watch	RIW	8 hr
Nov 22, 3:52 PM MST	Winter Storm Warning	RIW	31 hr
Nov 22, 3:52 PM MST	Winter Weather Advisory	RIW	35 hr
Nov 22, 11:04 PM MST	High Wind Warning	RIW	21 hr
Nov 24, 2:35 PM MST	Wind Chill Warning	RIW	17 hr
Nov 27, 2:42 PM MST	Winter Weather Advisory	RIW	41 hr
Dec 1, 2:51 PM MST	Winter Storm Watch	RIW	12 hr
Dec 1, 3:06 PM MST	High Wind Watch	RIW	22 hr
Dec 2, 2:43 AM MST	Winter Storm Warning	RIW	32 hr
Dec 2, 2:43 AM MST	Winter Weather Advisory	RIW	36 hr
Dec 2, 1:29 PM MST	High Wind Warning	RIW	19 hr
Dec 5, 8:00 PM MST	Dense Fog Advisory	RIW	13 hr
Dec 6, 7:51 PM MST	Freezing Rain Advisory	RIW	85 min
Dec 8, 3:58 AM MST	High Wind Watch	RIW	10 hr
Dec 8, 1:47 PM MST	High Wind Warning	RIW	7 hr
Dec 9, 2:05 PM MST	Winter Storm Watch	RIW	8 hr
Dec 9, 9:59 PM MST	Winter Storm Warning	RIW	16 hr
Dec 9, 9:59 PM MST	Winter Weather Advisory	RIW	16 hr
Dec 11, 2:03 PM MST	Winter Weather Advisory	RIW	16 hr
Dec 13, 9:34 PM MST	High Wind Watch	RIW	13 hr
Dec 13, 9:46 PM MST	Winter Storm Watch	RIW	5 hr
Dec 14, 2:30 AM MST	High Wind Warning	RIW	18 hr
Dec 14, 2:38 AM MST	Winter Storm Warning	RIW	27 hr
Dec 14, 3:34 PM MST	Winter Weather Advisory	RIW	27 hr
Dec 18, 12:52 PM MST	Winter Storm Warning	RIW	42 hr
Dec 18, 12:52 PM MST	Winter Weather Advisory	RIW	42 hr
Dec 28, 2:50 AM MST	Winter Storm Watch	RIW	13 hr
Dec 28, 2:58 PM MST	Winter Storm Warning	RIW	62 hr
Dec 28, 2:58 PM MST	Winter Weather Advisory	RIW	62 hr
Dec 28, 5:41 PM MST	High Wind Watch	RIW	10 hr
Dec 29, 4:03 AM MST	High Wind Warning	RIW	10 hr
Dec 29, 4:39 AM MST	Winter Storm Watch	RIW	10 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	3
Severe Thunderstorm Watch	3
Mesoscale Discussion	3
Special Weather Statement	40
Flooding
Areal Flood Warning	1
River Flood Warning	4
Flash Flood Watch	1
Flood Watch	4
Areal Flood Advisory	1
Winter
Winter Storm Warning	19
Winter Storm Watch	17
Freezing Rain Advisory	1
Winter Weather Advisory	40
Cold
Freeze Warning	4
Wind Chill Warning	1
Freeze Watch	1
Wind and dust
High Wind Warning	17
High Wind Watch	15
Fire
Red Flag Warning	17
Fire Weather Watch	9
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 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.