Alert archive / Wyoming / Natrona County

Weather alerts in Natrona County, Wyoming, 2008

172 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Natrona County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts: 172
Warnings: 61
Watches: 29
Advisories: 29
Busiest month: June41 alerts
Busiest day: July 6, 200811 alerts

Over time

By month

Warning verification

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

2 of 2 tornado warnings covering Natrona County in 2008 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 15 minutes after it went out.

Natrona County, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	2	0%	2	100%	15 min
Severe thunderstorm warnings	21	6	71%	11	73%	31 min
Flash flood warnings	3	0	100%	0

Each office's whole area, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Riverton, WY: tornado warnings	5	3	40%	5	60%	18 min
NWS Riverton, WY: severe thunderstorm warnings	93	10	89%	23	48%	31 min
NWS Riverton, WY: flash flood warnings	6	0	100%	1	0%

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 3, 2:36 AM MST	High Wind Watch	RIW	34 hr
Jan 4, 12:16 PM MST	High Wind Warning	RIW	24 hr
Jan 8, 5:51 PM MST	High Wind Warning	RIW	11 hr
Jan 13, 3:12 PM MST	High Wind Watch	RIW	36 hr
Jan 14, 2:45 PM MST	High Wind Warning	RIW	24 hr
Jan 15, 9:14 AM MST	Snow Advisory	RIW	11 hr
Jan 16, 3:02 PM MST	Winter Storm Watch	RIW	9 hr
Jan 17, 12:08 AM MST	Winter Storm Warning	RIW	39 hr
Jan 19, 9:57 AM MST	Winter Storm Watch	RIW	18 hr
Jan 19, 9:57 AM MST	Winter Storm Warning	RIW	52 hr
Jan 25, 3:22 PM MST	High Wind Watch	RIW	24 hr
Jan 26, 2:53 PM MST	High Wind Warning	RIW	48 hr
Jan 27, 2:45 AM MST	Snow Advisory	RIW	41 hr
Jan 30, 3:20 PM MST	High Wind Watch	RIW	12 hr
Jan 31, 12:41 AM MST	High Wind Warning	RIW	22 hr
Feb 5, 4:48 PM MST	High Wind Watch	RIW	24 hr
Feb 6, 6:19 AM MST	High Wind Warning	RIW	4 hr
Feb 6, 4:25 PM MST	Snow Advisory	RIW	32 hr
Feb 6, 4:33 PM MST	High Wind Warning	RIW	64 hr
Feb 7, 3:13 PM MST	High Wind Watch	RIW	24 hr
Feb 10, 3:17 PM MST	Snow Advisory	RIW	24 hr
Feb 12, 11:45 AM MST	Snow Advisory	RIW	39 hr
Feb 13, 11:43 AM MST	Winter Weather Advisory	RIW	15 hr
Feb 14, 3:09 AM MST	Winter Weather Advisory	RIW	11 hr
Mar 1, 2:45 AM MST	Snow Advisory	RIW	42 hr
Mar 3, 2:45 AM MST	High Wind Watch	RIW	12 hr
Mar 3, 3:14 PM MST	High Wind Warning	RIW	17 hr
Mar 3, 3:31 PM MST	Snow Advisory	RIW	30 hr
Mar 13, 2:44 AM MDT	Snow Advisory	RIW	37 hr
Mar 16, 8:15 AM MDT	Snow Advisory	RIW	10 hr
Mar 21, 3:46 PM MDT	Snow Advisory	RIW	20 hr
Mar 23, 11:18 AM MDT	High Wind Watch	RIW	9 hr
Mar 23, 8:47 PM MDT	High Wind Warning	RIW	15 hr
Mar 29, 11:23 AM MDT	High Wind Warning	RIW	8 hr
Mar 29, 1:42 PM MDT	Snow Advisory	RIW	32 hr
Apr 10, 6:59 AM MDT	Snow Advisory	RIW	10 hr
Apr 10, 9:41 AM MDT	Winter Storm Warning	RIW	7 hr
Apr 15, 2:42 PM MDT	Snow Advisory	RIW	18 hr
Apr 19, 2:56 PM MDT	High Wind Watch	RIW	7 hr
Apr 20, 10:59 AM MDT	High Wind Warning	RIW	8 hr
Apr 24, 9:11 AM MDT	Snow Advisory	RIW	12 hr
Apr 25, 10:05 AM MDT	Snow Advisory	RIW	19 hr
Apr 30, 3:31 PM MDT	Snow Advisory	RIW	21 hr
Apr 30, 3:31 PM MDT	Winter Storm Watch	RIW	21 hr
May 1, 12:05 PM MDT	Winter Storm Warning	RIW	24 hr
May 7, 12:52 PM MDT	Special Weather Statement	RIW	53 min
May 7, 1:46 PM MDT	Special Weather Statement	RIW	44 min
May 7, 2:11 PM MDT	Severe Thunderstorm Warning	RIW	49 min
May 7, 2:23 PM MDT	Special Weather Statement	RIW	67 min
May 7, 2:44 PM MDT	Severe Thunderstorm Warning	RIW	46 min
May 7, 3:08 PM MDT	Tornado Warning	RIW	37 min
May 7, 3:54 PM MDT	Special Weather Statement	RIW	51 min
May 9, 8:08 PM MDT	Special Weather Statement	RIW	67 min
May 10, 2:31 AM MDT	Snow Advisory	RIW	9 hr
May 12, 2:21 PM MDT	Snow Advisory	RIW	15 hr
May 20, 2:43 PM MDT	Flood Watch	RIW	3 days
May 21, 2:46 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
May 21, 3:39 PM MDT	Severe Thunderstorm Warning	RIW	51 min
May 21, 3:51 PM MDT	Snow Advisory	RIW	32 hr
May 21, 5:33 PM MDT	Mesoscale Discussion	SPC	57 min
May 22, 8:12 AM MDT	Special Weather Statement	RIW	63 min
May 25, 10:34 AM MDT	Flood Watch	RIW	43 hr
May 28, 2:53 PM MDT	Mesoscale Discussion	SPC	97 min
Jun 2, 2:17 PM MDT	Special Weather Statement	RIW	58 min
Jun 2, 2:22 PM MDT	Severe Thunderstorm Warning	RIW	38 min
Jun 2, 2:36 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 4, 3:31 PM MDT	Flood Watch	RIW	20 hr
Jun 5, 11:33 AM MDT	Areal Flood Warning	RIW	12 hr
Jun 5, 10:06 PM MDT	Areal Flood Warning	RIW	10 hr
Jun 10, 9:55 AM MDT	Snow Advisory	RIW	11 hr
Jun 11, 4:07 AM MDT	Snow Advisory	RIW	35 hr
Jun 16, 3:55 PM MDT	Special Weather Statement	RIW	50 min
Jun 18, 3:21 PM MDT	Special Weather Statement	RIW	39 min
Jun 18, 4:17 PM MDT	Special Weather Statement	RIW	58 min
Jun 18, 4:55 PM MDT	Special Weather Statement	RIW	65 min
Jun 18, 5:06 PM MDT	Severe Thunderstorm Warning	RIW	39 min
Jun 18, 5:43 PM MDT	Special Weather Statement	RIW	62 min
Jun 18, 5:43 PM MDT	Severe Thunderstorm Warning	RIW	62 min
Jun 18, 5:57 PM MDT	Flash Flood Warning	RIW	2 hr
Jun 18, 6:26 PM MDT	Severe Thunderstorm Warning	RIW	64 min
Jun 18, 6:39 PM MDT	Severe Thunderstorm Warning	RIW	36 min
Jun 18, 6:58 PM MDT	Tornado Warning	RIW	47 min
Jun 19, 12:31 PM MDT	Special Weather Statement	RIW	59 min
Jun 19, 1:18 PM MDT	Mesoscale Discussion	SPC	57 min
Jun 19, 1:34 PM MDT	Severe Thunderstorm Warning	RIW	41 min
Jun 19, 2:14 PM MDT	Severe Thunderstorm Warning	RIW	61 min
Jun 19, 2:53 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 19, 5:10 PM MDT	Mesoscale Discussion	SPC	65 min
Jun 20, 12:22 PM MDT	Mesoscale Discussion	SPC	83 min
Jun 23, 12:48 AM MDT	Severe Thunderstorm Warning	RIW	42 min
Jun 23, 1:25 PM MDT	Special Weather Statement	RIW	65 min
Jun 23, 2:34 PM MDT	Special Weather Statement	RIW	26 min
Jun 23, 4:52 PM MDT	Special Weather Statement	RIW	53 min
Jun 24, 5:05 PM MDT	Special Weather Statement	RIW	55 min
Jun 24, 5:43 PM MDT	Special Weather Statement	RIW	62 min
Jun 25, 3:05 PM MDT	Special Weather Statement	RIW	55 min
Jun 25, 3:18 PM MDT	Special Weather Statement	RIW	57 min
Jun 25, 3:48 PM MDT	Special Weather Statement	RIW	57 min
Jun 25, 4:11 PM MDT	Special Weather Statement	RIW	64 min
Jun 25, 4:36 PM MDT	Severe Thunderstorm Warning	RIW	39 min
Jun 26, 3:07 PM MDT	Special Weather Statement	RIW	53 min
Jun 26, 3:45 PM MDT	Special Weather Statement	RIW	60 min
Jun 26, 4:20 PM MDT	Special Weather Statement	RIW	55 min
Jun 26, 5:01 PM MDT	Special Weather Statement	RIW	59 min
Jul 2, 12:34 PM MDT	Mesoscale Discussion	SPC	116 min
Jul 2, 1:27 PM MDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 2, 4:57 PM MDT	Mesoscale Discussion	SPC	63 min
Jul 2, 5:01 PM MDT	Severe Thunderstorm Warning	RIW	44 min
Jul 4, 4:03 PM MDT	Special Weather Statement	RIW	57 min
Jul 6, 1:14 PM MDT	Mesoscale Discussion	SPC	61 min
Jul 6, 1:19 PM MDT	Flash Flood Warning	RIW	86 min
Jul 6, 1:32 PM MDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 6, 2:44 PM MDT	Severe Thunderstorm Warning	RIW	46 min
Jul 6, 2:47 PM MDT	Flash Flood Warning	RIW	118 min
Jul 6, 3:19 PM MDT	Severe Thunderstorm Warning	RIW	26 min
Jul 6, 3:41 PM MDT	Severe Thunderstorm Warning	RIW	27 min
Jul 6, 3:56 PM MDT	Severe Thunderstorm Warning	RIW	64 min
Jul 6, 4:21 PM MDT	Severe Thunderstorm Warning	RIW	54 min
Jul 6, 5:04 PM MDT	Severe Thunderstorm Warning	RIW	41 min
Jul 6, 5:13 PM MDT	Severe Thunderstorm Warning	RIW	47 min
Jul 6, 6:08 PM MDT	Mesoscale Discussion	SPC	67 min
Jul 6, 6:35 PM MDT	Special Weather Statement	RIW	55 min
Jul 7, 11:43 PM MDT	Special Weather Statement	RIW	62 min
Jul 8, 2:54 AM MDT	Special Weather Statement	RIW	66 min
Jul 9, 2:18 AM MDT	Special Weather Statement	RIW	57 min
Jul 9, 3:33 AM MDT	Special Weather Statement	RIW	57 min
Jul 18, 1:18 PM MDT	Special Weather Statement	RIW	57 min
Jul 18, 2:22 PM MDT	Special Weather Statement	RIW	53 min
Jul 22, 5:12 PM MDT	Special Weather Statement	RIW	63 min
Jul 22, 5:32 PM MDT	Special Weather Statement	RIW	58 min
Jul 22, 5:52 PM MDT	Special Weather Statement	RIW	53 min
Jul 22, 6:52 PM MDT	Special Weather Statement	RIW	53 min
Jul 24, 1:31 PM MDT	Mesoscale Discussion	SPC	59 min
Jul 24, 4:19 PM MDT	Severe Thunderstorm Warning	RIW	41 min
Jul 24, 5:01 PM MDT	Special Weather Statement	RIW	59 min
Jul 25, 4:49 PM MDT	Special Weather Statement	RIW	56 min
Jul 25, 5:29 PM MDT	Special Weather Statement	RIW	46 min
Aug 1, 2:35 AM MDT	Red Flag Warning	RIW	17 hr
Aug 1, 2:56 PM MDT	Red Flag Warning	RIW	30 hr
Aug 8, 10:35 AM MDT	Flash Flood Watch	RIW	10 hr
Aug 10, 11:37 PM MDT	Special Weather Statement	RIW	53 min
Aug 19, 3:11 PM MDT	Fire Weather Watch	RIW	12 hr
Aug 20, 3:08 AM MDT	Fire Weather Watch	RIW	25 hr
Aug 21, 4:35 AM MDT	Red Flag Warning	RIW	19 hr
Aug 25, 3:47 PM MDT	Red Flag Warning	RIW	29 hr
Aug 26, 3:01 PM MDT	Red Flag Warning	RIW	30 hr
Aug 30, 2:36 AM MDT	Red Flag Warning	RIW	18 hr
Sep 24, 1:30 PM MDT	Fire Weather Watch	RIW	11 hr
Sep 25, 12:55 AM MDT	Red Flag Warning	RIW	18 hr
Oct 6, 1:51 AM MDT	Freeze Watch	RIW	13 hr
Oct 6, 2:51 PM MDT	Freeze Warning	RIW	17 hr
Oct 9, 4:22 AM MDT	Winter Storm Watch	RIW	49 hr
Oct 10, 4:35 AM MDT	Winter Storm Warning	RIW	59 hr
Oct 10, 9:59 PM MDT	Special Weather Statement	RIW	61 min
Oct 21, 1:34 PM MDT	Winter Weather Advisory	RIW	7 hr
Nov 12, 3:50 PM MST	High Wind Warning	RIW	34 hr
Dec 2, 3:11 AM MST	Winter Weather Advisory	RIW	21 hr
Dec 7, 3:05 PM MST	Winter Weather Advisory	RIW	29 hr
Dec 12, 2:55 PM MST	Winter Weather Advisory	RIW	31 hr
Dec 12, 8:40 PM MST	High Wind Warning	RIW	15 hr
Dec 12, 9:25 PM MST	Winter Storm Watch	RIW	15 hr
Dec 12, 9:25 PM MST	Winter Storm Warning	RIW	24 hr
Dec 13, 9:44 PM MST	Wind Chill Warning	RIW	13 hr
Dec 21, 2:20 PM MST	Winter Weather Advisory	RIW	30 hr
Dec 23, 9:09 PM MST	High Wind Watch	RIW	12 hr
Dec 24, 9:04 AM MST	High Wind Warning	RIW	32 hr
Dec 24, 3:10 PM MST	Winter Storm Warning	RIW	51 hr
Dec 25, 3:12 PM MST	Winter Storm Warning	RIW	24 hr
Dec 25, 3:12 PM MST	Winter Weather Advisory	RIW	27 hr
Dec 27, 4:12 PM MST	High Wind Watch	RIW	10 hr
Dec 27, 4:12 PM MST	High Wind Warning	RIW	24 hr
Dec 29, 2:52 AM MST	High Wind Warning	RIW	26 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	21
Tornado Warning	2
Severe Thunderstorm Watch	5
Mesoscale Discussion	10
Special Weather Statement	43
Flooding
Areal Flood Warning	2
Flash Flood Warning	3
Flash Flood Watch	1
Flood Watch	3
Winter
Winter Storm Warning	8
Winter Storm Watch	5
Snow Advisory	21
Winter Weather Advisory	8
Cold
Freeze Warning	1
Wind Chill Warning	1
Freeze Watch	1
Wind and dust
High Wind Warning	16
High Wind Watch	11
Fire
Red Flag Warning	7
Fire Weather Watch	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2007 2009

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.