Alert archive / Wyoming / Fremont County
Weather alerts in Fremont County, Wyoming, 2013
182 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 182
- Warnings
- 43
- Watches
- 30
- Advisories
- 42
- Busiest month
- September40 alerts
- Busiest day
- September 17, 201312 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, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 2 | 85% | 7 | 14% | 22 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Riverton, WY: tornado warnings | 7 | 0 | 100% | 2 | 0% | |
| NWS Riverton, WY: severe thunderstorm warnings | 80 | 24 | 70% | 44 | 61% | 21 min |
| NWS Riverton, WY: flash flood warnings | 15 | 0 | 100% | 3 | 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 9, 2:36 PM MST | Winter Storm Watch | RIW | 24 hr |
| Jan 10, 2:16 AM MST | High Wind Warning | RIW | 11 hr |
| Jan 10, 2:40 AM MST | Winter Storm Warning | RIW | 38 hr |
| Jan 10, 2:40 AM MST | Winter Weather Advisory | RIW | 38 hr |
| Jan 14, 4:04 PM MST | Winter Weather Advisory | RIW | 25 hr |
| Jan 23, 2:00 AM MST | High Wind Watch | RIW | 12 hr |
| Jan 23, 2:06 PM MST | High Wind Warning | RIW | 19 hr |
| Jan 27, 10:49 AM MST | Winter Weather Advisory | RIW | 16 hr |
| Jan 28, 4:47 PM MST | Winter Weather Advisory | RIW | 24 hr |
| Jan 30, 1:42 AM MST | Winter Storm Warning | RIW | 37 hr |
| Jan 30, 1:42 AM MST | Winter Weather Advisory | RIW | 37 hr |
| Jan 30, 1:43 AM MST | High Wind Warning | RIW | 34 hr |
| Jan 31, 2:53 PM MST | Winter Weather Advisory | RIW | 21 hr |
| Feb 6, 9:45 PM MST | Winter Storm Watch | RIW | 43 hr |
| Feb 7, 9:48 PM MST | Winter Storm Warning | RIW | 62 hr |
| Feb 8, 4:17 PM MST | Winter Weather Advisory | RIW | 47 hr |
| Feb 13, 1:51 PM MST | Winter Weather Advisory | RIW | 21 hr |
| Feb 22, 1:27 AM MST | Winter Weather Advisory | RIW | 58 hr |
| Feb 25, 1:52 PM MST | Winter Weather Advisory | RIW | 27 hr |
| Mar 2, 2:26 PM MST | Winter Weather Advisory | RIW | 39 hr |
| Mar 6, 2:18 AM MST | Winter Weather Advisory | RIW | 23 hr |
| Mar 8, 1:51 PM MST | Winter Weather Advisory | RIW | 21 hr |
| Mar 15, 2:17 PM MDT | Winter Storm Watch | RIW | 26 hr |
| Mar 15, 2:44 PM MDT | High Wind Watch | RIW | 36 hr |
| Mar 16, 3:52 PM MDT | Winter Storm Warning | RIW | 24 hr |
| Mar 16, 3:52 PM MDT | Winter Weather Advisory | RIW | 24 hr |
| Mar 17, 2:31 AM MDT | High Wind Warning | RIW | 18 hr |
| Mar 20, 2:34 AM MDT | Winter Weather Advisory | RIW | 30 hr |
| Mar 22, 11:11 PM MDT | Winter Weather Advisory | RIW | 7 hr |
| Apr 6, 11:44 PM MDT | Winter Storm Watch | RIW | 26 hr |
| Apr 8, 2:03 AM MDT | Winter Storm Warning | RIW | 46 hr |
| Apr 8, 2:03 AM MDT | Winter Weather Advisory | RIW | 46 hr |
| Apr 12, 3:02 PM MDT | Winter Weather Advisory | RIW | 27 hr |
| Apr 13, 2:41 AM MDT | High Wind Warning | RIW | 16 hr |
| Apr 14, 9:45 PM MDT | Winter Storm Watch | RIW | 12 hr |
| Apr 14, 9:45 PM MDT | Winter Weather Advisory | RIW | 62 hr |
| Apr 15, 10:10 AM MDT | Winter Storm Warning | RIW | 59 hr |
| Apr 19, 3:20 AM MDT | Winter Weather Advisory | RIW | 21 hr |
| Apr 21, 2:48 AM MDT | Winter Weather Advisory | RIW | 39 hr |
| Apr 30, 12:31 PM MDT | Winter Weather Advisory | RIW | 20 hr |
| May 3, 11:53 PM MDT | Winter Weather Advisory | RIW | 13 hr |
| May 7, 3:48 PM MDT | Special Weather Statement | RIW | 27 min |
| May 7, 4:09 PM MDT | Special Weather Statement | RIW | 36 min |
| May 16, 1:14 PM MDT | Severe Thunderstorm Warning | RIW | 31 min |
| May 16, 6:47 PM MDT | Special Weather Statement | RIW | 28 min |
| May 16, 7:17 PM MDT | Special Weather Statement | RIW | 28 min |
| May 18, 12:09 PM MDT | Special Weather Statement | RIW | 51 min |
| May 19, 6:27 AM MDT | Areal Flood Advisory | RIW | 4 hr |
| May 28, 1:03 PM MDT | Special Weather Statement | RIW | 57 min |
| May 28, 2:14 PM MDT | Special Weather Statement | RIW | 61 min |
| May 28, 4:44 PM MDT | Winter Weather Advisory | RIW | 25 hr |
| May 28, 6:28 PM MDT | Special Weather Statement | RIW | 47 min |
| May 29, 9:00 AM MDT | Areal Flood Advisory | RIW | 6 hr |
| May 30, 2:27 AM MDT | Winter Weather Advisory | RIW | 48 hr |
| Jun 13, 11:58 AM MDT | Special Weather Statement | RIW | 47 min |
| Jun 13, 12:09 PM MDT | Severe Thunderstorm Warning | RIW | 51 min |
| Jun 13, 12:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 12:58 PM MDT | Special Weather Statement | RIW | 47 min |
| Jun 13, 1:06 PM MDT | Severe Thunderstorm Watch | SPC | 12 hr |
| Jun 13, 1:57 PM MDT | Special Weather Statement | RIW | 48 min |
| Jun 13, 2:57 PM MDT | Special Weather Statement | RIW | 48 min |
| Jun 13, 9:00 PM MDT | Severe Thunderstorm Warning | RIW | 45 min |
| Jun 13, 10:58 PM MDT | Special Weather Statement | RIW | 47 min |
| Jun 16, 8:17 PM MDT | Special Weather Statement | RIW | 43 min |
| Jun 18, 1:44 AM MDT | Fire Weather Watch | RIW | 18 hr |
| Jun 18, 7:30 PM MDT | Red Flag Warning | RIW | 27 hr |
| Jun 22, 9:43 AM MDT | Special Weather Statement | RIW | 47 min |
| Jun 22, 9:50 AM MDT | Special Weather Statement | RIW | 40 min |
| Jun 22, 10:00 AM MDT | Severe Thunderstorm Warning | RIW | 45 min |
| Jun 22, 10:07 AM MDT | Special Weather Statement | RIW | 38 min |
| Jun 22, 10:42 AM MDT | Severe Thunderstorm Warning | RIW | 48 min |
| Jun 22, 10:59 AM MDT | Tornado Watch | SPC | 7 hr |
| Jun 22, 11:23 AM MDT | Severe Thunderstorm Warning | RIW | 52 min |
| Jun 22, 1:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 2:48 AM MDT | Fire Weather Watch | RIW | 24 hr |
| Jun 24, 2:44 AM MDT | Red Flag Warning | RIW | 42 hr |
| Jun 29, 4:27 PM MDT | Special Weather Statement | RIW | 33 min |
| Jun 29, 4:53 PM MDT | Special Weather Statement | RIW | 22 min |
| Jun 30, 4:34 PM MDT | Special Weather Statement | RIW | 26 min |
| Jun 30, 6:23 PM MDT | Special Weather Statement | RIW | 37 min |
| Jun 30, 9:35 PM MDT | Special Weather Statement | RIW | 25 min |
| Jul 1, 6:18 PM MDT | Severe Thunderstorm Warning | RIW | 42 min |
| Jul 3, 2:11 PM MDT | Special Weather Statement | RIW | 49 min |
| Jul 3, 2:33 PM MDT | Special Weather Statement | RIW | 42 min |
| Jul 4, 9:14 AM MDT | Flash Flood Watch | RIW | 12 hr |
| Jul 4, 4:26 PM MDT | Special Weather Statement | RIW | 64 min |
| Jul 4, 5:06 PM MDT | Special Weather Statement | RIW | 39 min |
| Jul 4, 5:24 PM MDT | Flash Flood Warning | RIW | 4 hr |
| Jul 5, 2:37 PM MDT | Special Weather Statement | RIW | 38 min |
| Jul 6, 3:57 PM MDT | Special Weather Statement | RIW | 48 min |
| Jul 6, 4:42 PM MDT | Special Weather Statement | RIW | 48 min |
| Jul 7, 4:40 PM MDT | Special Weather Statement | RIW | 50 min |
| Jul 8, 4:05 PM MDT | Special Weather Statement | RIW | 55 min |
| Jul 8, 5:19 PM MDT | Special Weather Statement | RIW | 41 min |
| Jul 8, 8:00 PM MDT | Special Weather Statement | RIW | 45 min |
| Jul 10, 2:28 PM MDT | Fire Weather Watch | RIW | 11 hr |
| Jul 11, 1:54 AM MDT | Red Flag Warning | RIW | 19 hr |
| Jul 16, 2:36 AM MDT | Flash Flood Watch | RIW | 18 hr |
| Jul 16, 4:37 PM MDT | Special Weather Statement | RIW | 38 min |
| Jul 21, 4:48 PM MDT | Red Flag Warning | RIW | 29 hr |
| Jul 25, 3:24 PM MDT | Special Weather Statement | RIW | 51 min |
| Jul 27, 2:07 PM MDT | Special Weather Statement | RIW | 23 min |
| Jul 28, 5:22 PM MDT | Special Weather Statement | RIW | 23 min |
| Jul 28, 6:01 PM MDT | Special Weather Statement | RIW | 29 min |
| Jul 30, 3:41 PM MDT | Special Weather Statement | RIW | 49 min |
| Jul 30, 5:03 PM MDT | Special Weather Statement | RIW | 42 min |
| Aug 2, 12:42 AM MDT | Special Weather Statement | RIW | 48 min |
| Aug 2, 1:23 AM MDT | Special Weather Statement | RIW | 52 min |
| Aug 6, 1:18 PM MDT | Red Flag Warning | RIW | 5 hr |
| Aug 7, 7:14 PM MDT | Special Weather Statement | RIW | 46 min |
| Aug 9, 2:21 PM MDT | Special Weather Statement | RIW | 54 min |
| Aug 9, 4:03 PM MDT | Special Weather Statement | RIW | 42 min |
| Aug 9, 7:17 PM MDT | Flash Flood Warning | RIW | 103 min |
| Aug 11, 2:55 PM MDT | Special Weather Statement | RIW | 50 min |
| Aug 11, 3:40 PM MDT | Special Weather Statement | RIW | 35 min |
| Aug 17, 10:31 AM MDT | Red Flag Warning | RIW | 10 hr |
| Sep 2, 2:14 AM MDT | Flash Flood Watch | RIW | 17 hr |
| Sep 7, 5:54 PM MDT | Special Weather Statement | RIW | 36 min |
| Sep 7, 6:02 PM MDT | Special Weather Statement | RIW | 28 min |
| Sep 7, 6:12 PM MDT | Severe Thunderstorm Warning | RIW | 33 min |
| Sep 11, 2:29 PM MDT | Flash Flood Watch | RIW | 28 hr |
| Sep 13, 9:19 AM MDT | Flash Flood Watch | RIW | 12 hr |
| Sep 15, 3:02 PM MDT | Special Weather Statement | RIW | 58 min |
| Sep 15, 3:37 PM MDT | Areal Flood Advisory | RIW | 3 hr |
| Sep 16, 6:48 PM MDT | Special Weather Statement | RIW | 27 min |
| Sep 17, 12:49 PM MDT | Severe Thunderstorm Warning | RIW | 56 min |
| Sep 17, 1:30 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 17, 2:24 PM MDT | Severe Thunderstorm Warning | RIW | 66 min |
| Sep 17, 2:33 PM MDT | Special Weather Statement | RIW | 42 min |
| Sep 17, 2:45 PM MDT | Special Weather Statement | RIW | 45 min |
| Sep 17, 3:11 PM MDT | Special Weather Statement | RIW | 49 min |
| Sep 17, 3:16 PM MDT | Severe Thunderstorm Warning | RIW | 44 min |
| Sep 17, 3:44 PM MDT | Mesoscale Discussion | SPC | 91 min |
| Sep 17, 3:59 PM MDT | Special Weather Statement | RIW | 46 min |
| Sep 17, 5:26 PM MDT | Special Weather Statement | RIW | 49 min |
| Sep 17, 5:55 PM MDT | Special Weather Statement | RIW | 50 min |
| Sep 17, 6:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Sep 17, 8:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Sep 17, 8:44 PM MDT | Special Weather Statement | RIW | 31 min |
| Sep 17, 8:54 PM MDT | Severe Thunderstorm Warning | RIW | 66 min |
| Sep 17, 9:53 PM MDT | Severe Thunderstorm Warning | RIW | 67 min |
| Sep 17, 10:02 PM MDT | Special Weather Statement | RIW | 43 min |
| Sep 17, 10:37 PM MDT | Special Weather Statement | RIW | 38 min |
| Sep 18, 5:56 AM MDT | Freeze Watch | RIW | 8 hr |
| Sep 18, 1:29 PM MDT | Freeze Warning | RIW | 20 hr |
| Sep 21, 1:57 AM MDT | Red Flag Warning | RIW | 17 hr |
| Sep 22, 12:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Sep 24, 2:45 AM MDT | Winter Storm Watch | RIW | 24 hr |
| Sep 24, 3:09 PM MDT | Winter Storm Warning | RIW | 28 hr |
| Sep 25, 2:36 AM MDT | Winter Weather Advisory | RIW | 17 hr |
| Sep 25, 1:50 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Sep 25, 2:54 PM MDT | Winter Storm Watch | RIW | 25 hr |
| Sep 26, 3:42 PM MDT | Winter Storm Warning | RIW | 20 hr |
| Sep 26, 3:42 PM MDT | Winter Weather Advisory | RIW | 20 hr |
| Sep 29, 4:15 AM MDT | High Wind Watch | RIW | 15 hr |
| Sep 29, 9:18 AM MDT | High Wind Warning | RIW | 33 hr |
| Oct 2, 3:10 AM MDT | Winter Storm Watch | RIW | 24 hr |
| Oct 2, 1:37 PM MDT | Winter Storm Warning | RIW | 58 hr |
| Oct 3, 3:01 AM MDT | Winter Weather Advisory | RIW | 39 hr |
| Oct 10, 3:01 PM MDT | Winter Weather Advisory | RIW | 15 hr |
| Oct 13, 2:32 AM MDT | Winter Storm Watch | RIW | 13 hr |
| Oct 13, 3:38 PM MDT | Winter Storm Warning | RIW | 32 hr |
| Oct 13, 3:38 PM MDT | Winter Weather Advisory | RIW | 32 hr |
| Oct 27, 9:47 PM MDT | Winter Weather Advisory | RIW | 44 hr |
| Oct 30, 8:07 PM MDT | Dense Fog Advisory | RIW | 16 hr |
| Nov 7, 12:54 AM MST | Winter Weather Advisory | RIW | 31 hr |
| Nov 15, 2:43 PM MST | Winter Weather Advisory | RIW | 32 hr |
| Nov 15, 2:57 PM MST | High Wind Watch | RIW | 7 hr |
| Nov 15, 10:13 PM MST | High Wind Warning | RIW | 20 hr |
| Nov 19, 9:01 AM MST | Winter Weather Advisory | RIW | 51 hr |
| Nov 30, 1:16 AM MST | Winter Storm Watch | RIW | 25 hr |
| Nov 30, 2:54 PM MST | High Wind Watch | RIW | 35 hr |
| Dec 1, 2:34 AM MST | Winter Storm Warning | RIW | 3 days |
| Dec 1, 3:33 PM MST | High Wind Warning | RIW | 26 hr |
| Dec 2, 11:08 AM MST | Winter Storm Watch | RIW | 4 hr |
| Dec 2, 11:08 AM MST | Winter Weather Advisory | RIW | 49 hr |
| Dec 9, 6:07 AM MST | Wind Chill Warning | RIW | 5 hr |
| Dec 13, 8:43 PM MST | High Wind Watch | RIW | 14 hr |
| Dec 18, 2:15 PM MST | Winter Weather Advisory | RIW | 36 hr |
| Dec 22, 1:57 PM MST | High Wind Watch | RIW | 11 hr |
| Dec 23, 1:39 AM MST | Winter Weather Advisory | RIW | 30 hr |
| Dec 31, 2:15 AM MST | Winter Weather Advisory | RIW | 33 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 | 13 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 61 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 5 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 11 |
| Winter Storm Watch | 11 |
| Winter Weather Advisory | 38 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 8 |
| High Wind Watch | 7 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.