Alert archive / Wyoming / Converse County
Weather alerts in Converse County, Wyoming, 2025
151 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Converse County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 151
- Warnings
- 63
- Watches
- 25
- Advisories
- 9
- Busiest month
- June48 alerts
- Busiest day
- June 13, 202510 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Converse County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 40 | 9 | 78% | 8 | 88% | 30 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Cheyenne, WY: tornado warnings | 14 | 5 | 64% | 11 | 45% | 9 min |
| NWS Cheyenne, WY: severe thunderstorm warnings | 315 | 138 | 56% | 270 | 81% | 22 min |
| NWS Cheyenne, WY: flash flood warnings | 5 | 4 | 20% | 8 | 100% | 12 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 10, 2:03 PM MST | Winter Weather Advisory | CYS | 27 hr |
| Jan 15, 2:21 AM MST | High Wind Watch | CYS | 24 hr |
| Jan 16, 2:51 AM MST | Winter Weather Advisory | CYS | 53 hr |
| Jan 17, 12:25 PM MST | Cold Weather Advisory | CYS | 59 hr |
| Jan 19, 1:59 AM MST | Extreme Cold Warning | CYS | 54 hr |
| Jan 30, 1:32 AM MST | High Wind Watch | CYS | 36 hr |
| Jan 30, 1:22 PM MST | High Wind Warning | CYS | 61 hr |
| Feb 1, 2:04 PM MST | High Wind Watch | CYS | 13 hr |
| Feb 2, 2:50 AM MST | High Wind Warning | CYS | 32 hr |
| Feb 4, 2:39 AM MST | High Wind Watch | CYS | 24 hr |
| Feb 4, 12:42 PM MST | High Wind Warning | CYS | 32 hr |
| Feb 12, 2:31 AM MST | High Wind Watch | CYS | 53 hr |
| Feb 15, 1:26 PM MST | Winter Weather Advisory | CYS | 4 days |
| Feb 16, 2:23 PM MST | Cold Weather Advisory | CYS | 21 hr |
| Feb 21, 1:30 AM MST | High Wind Watch | CYS | 35 hr |
| Feb 21, 1:45 PM MST | High Wind Warning | CYS | 4 days |
| Mar 3, 11:05 AM MST | Winter Weather Advisory | CYS | 26 hr |
| Mar 4, 1:31 PM MST | Winter Storm Watch | CYS | 37 hr |
| Mar 5, 2:23 PM MST | Winter Storm Warning | CYS | 53 hr |
| Mar 8, 12:28 PM MST | High Wind Watch | CYS | 53 hr |
| Mar 9, 3:25 AM MDT | High Wind Warning | CYS | 39 hr |
| Mar 12, 1:30 PM MDT | High Wind Warning | CYS | 29 hr |
| Mar 13, 3:14 AM MDT | High Wind Watch | CYS | 42 hr |
| Mar 15, 1:18 AM MDT | High Wind Watch | CYS | 12 hr |
| Mar 15, 1:31 PM MDT | High Wind Warning | CYS | 52 hr |
| Mar 16, 8:43 PM MDT | Fire Weather Watch | CYS | 5 hr |
| Mar 17, 1:34 AM MDT | Red Flag Warning | CYS | 16 hr |
| Mar 17, 2:11 PM MDT | Winter Weather Advisory | CYS | 40 hr |
| Mar 21, 2:49 AM MDT | High Wind Watch | CYS | 24 hr |
| Mar 21, 2:18 PM MDT | High Wind Warning | CYS | 34 hr |
| Mar 26, 2:14 PM MDT | Fire Weather Watch | CYS | 13 hr |
| Mar 27, 3:13 AM MDT | Red Flag Warning | CYS | 16 hr |
| Apr 16, 2:19 AM MDT | Winter Storm Watch | CYS | 24 hr |
| Apr 17, 2:38 AM MDT | Winter Storm Warning | CYS | 39 hr |
| May 5, 1:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| May 9, 5:24 PM MDT | Special Weather Statement | CYS | 36 min |
| May 11, 10:04 PM MDT | Special Weather Statement | CYS | 56 min |
| May 18, 1:20 PM MDT | Special Weather Statement | CYS | 25 min |
| May 18, 2:16 PM MDT | Special Weather Statement | CYS | 29 min |
| Jun 1, 7:25 PM MDT | Special Weather Statement | CYS | 50 min |
| Jun 1, 8:34 PM MDT | Special Weather Statement | CYS | 56 min |
| Jun 2, 1:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 5:15 PM MDT | Special Weather Statement | CYS | 30 min |
| Jun 11, 5:41 PM MDT | Special Weather Statement | CYS | 34 min |
| Jun 11, 5:52 PM MDT | Special Weather Statement | CYS | 23 min |
| Jun 11, 6:01 PM MDT | Special Weather Statement | CYS | 44 min |
| Jun 11, 6:45 PM MDT | Special Weather Statement | CYS | 45 min |
| Jun 12, 6:31 PM MDT | Severe Thunderstorm Warning | CYS | 30 min |
| Jun 13, 12:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 1:56 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 13, 2:32 PM MDT | Severe Thunderstorm Warning | CYS | 43 min |
| Jun 13, 2:38 PM MDT | Severe Thunderstorm Warning | CYS | 37 min |
| Jun 13, 3:05 PM MDT | Severe Thunderstorm Warning | CYS | 55 min |
| Jun 13, 3:28 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 13, 3:59 PM MDT | Severe Thunderstorm Warning | CYS | 28 min |
| Jun 13, 4:09 PM MDT | Severe Thunderstorm Warning | CYS | 51 min |
| Jun 13, 4:43 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 14, 12:57 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 14, 2:43 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 14, 6:06 PM MDT | Severe Thunderstorm Warning | CYS | 54 min |
| Jun 14, 6:30 PM MDT | Severe Thunderstorm Warning | CYS | 60 min |
| Jun 15, 5:46 PM MDT | Severe Thunderstorm Warning | CYS | 59 min |
| Jun 15, 6:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jun 16, 4:30 PM MDT | Severe Thunderstorm Warning | CYS | 60 min |
| Jun 16, 4:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jun 16, 4:58 PM MDT | Severe Thunderstorm Warning | CYS | 51 min |
| Jun 16, 5:22 PM MDT | Severe Thunderstorm Warning | CYS | 53 min |
| Jun 16, 5:30 PM MDT | Areal Flood Advisory | CYS | 3 hr |
| Jun 16, 5:40 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| Jun 16, 7:29 PM MDT | Severe Thunderstorm Warning | CYS | 61 min |
| Jun 16, 8:54 PM MDT | Severe Thunderstorm Warning | CYS | 66 min |
| Jun 16, 9:57 PM MDT | Severe Thunderstorm Warning | CYS | 63 min |
| Jun 17, 10:48 AM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 17, 2:49 PM MDT | Special Weather Statement | CYS | 26 min |
| Jun 17, 3:06 PM MDT | Severe Thunderstorm Warning | CYS | 54 min |
| Jun 17, 3:43 PM MDT | Severe Thunderstorm Warning | CYS | 47 min |
| Jun 17, 4:29 PM MDT | Special Weather Statement | CYS | 31 min |
| Jun 24, 12:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jun 24, 2:51 PM MDT | Special Weather Statement | CYS | 24 min |
| Jun 24, 11:13 PM MDT | Severe Thunderstorm Warning | CYS | 62 min |
| Jun 25, 12:09 AM MDT | Severe Thunderstorm Warning | CYS | 66 min |
| Jun 25, 1:14 AM MDT | Severe Thunderstorm Warning | CYS | 31 min |
| Jun 25, 3:22 PM MDT | Special Weather Statement | CYS | 23 min |
| Jun 25, 3:35 PM MDT | Special Weather Statement | CYS | 25 min |
| Jun 25, 3:36 PM MDT | Special Weather Statement | CYS | 24 min |
| Jun 28, 7:37 PM MDT | Special Weather Statement | CYS | 53 min |
| Jun 29, 7:41 PM MDT | Severe Thunderstorm Warning | CYS | 49 min |
| Jul 4, 2:34 PM MDT | Special Weather Statement | CYS | 26 min |
| Jul 4, 4:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 4, 5:51 PM MDT | Severe Thunderstorm Warning | CYS | 54 min |
| Jul 4, 6:35 PM MDT | Severe Thunderstorm Warning | CYS | 70 min |
| Jul 4, 6:57 PM MDT | Severe Thunderstorm Warning | CYS | 48 min |
| Jul 4, 7:42 PM MDT | Severe Thunderstorm Warning | CYS | 82 min |
| Jul 6, 5:48 PM MDT | Severe Thunderstorm Warning | CYS | 42 min |
| Jul 6, 6:46 PM MDT | Severe Thunderstorm Warning | CYS | 23 min |
| Jul 10, 5:14 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| Jul 10, 6:37 PM MDT | Severe Thunderstorm Warning | CYS | 21 min |
| Jul 10, 6:43 PM MDT | Severe Thunderstorm Warning | CYS | 32 min |
| Jul 10, 7:05 PM MDT | Special Weather Statement | CYS | 25 min |
| Jul 14, 2:18 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Jul 15, 9:10 PM MDT | Special Weather Statement | CYS | 50 min |
| Jul 15, 10:01 PM MDT | Special Weather Statement | CYS | 44 min |
| Jul 17, 2:55 PM MDT | Special Weather Statement | CYS | 35 min |
| Jul 18, 4:07 PM MDT | Mesoscale Discussion | SPC | 113 min |
| Jul 18, 6:06 PM MDT | Severe Thunderstorm Warning | CYS | 39 min |
| Jul 18, 8:11 PM MDT | Special Weather Statement | CYS | 49 min |
| Jul 22, 10:23 PM MDT | Severe Thunderstorm Warning | CYS | 37 min |
| Jul 23, 1:11 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 1:34 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 23, 3:06 PM MDT | Severe Thunderstorm Warning | CYS | 39 min |
| Jul 23, 4:13 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 12:14 PM MDT | Special Weather Statement | CYS | 31 min |
| Jul 24, 12:44 PM MDT | Special Weather Statement | CYS | 31 min |
| Jul 24, 1:41 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 2:02 AM MDT | Red Flag Warning | CYS | 18 hr |
| Jul 29, 5:22 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 6:08 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 30, 5:04 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 6:33 PM MDT | Special Weather Statement | CYS | 27 min |
| Jul 31, 1:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 31, 4:45 PM MDT | Special Weather Statement | CYS | 30 min |
| Jul 31, 5:32 PM MDT | Mesoscale Discussion | SPC | 88 min |
| Aug 3, 1:08 PM MDT | Red Flag Warning | CYS | 6 days |
| Aug 12, 1:52 PM MDT | Red Flag Warning | CYS | 30 hr |
| Aug 13, 2:37 PM MDT | Special Weather Statement | CYS | 38 min |
| Aug 13, 2:48 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 13, 3:13 PM MDT | Special Weather Statement | CYS | 47 min |
| Aug 28, 4:54 PM MDT | Special Weather Statement | CYS | 36 min |
| Sep 15, 2:46 PM MDT | Special Weather Statement | CYS | 29 min |
| Sep 15, 3:33 PM MDT | Mesoscale Discussion | SPC | 117 min |
| Sep 15, 3:46 PM MDT | Special Weather Statement | CYS | 44 min |
| Sep 15, 4:18 PM MDT | Special Weather Statement | CYS | 42 min |
| Sep 15, 4:59 PM MDT | Special Weather Statement | CYS | 46 min |
| Sep 15, 5:39 PM MDT | Special Weather Statement | CYS | 51 min |
| Oct 5, 2:06 PM MDT | Freeze Watch | CYS | 11 hr |
| Oct 6, 1:28 AM MDT | Freeze Warning | CYS | 30 hr |
| Oct 15, 7:22 PM MDT | Severe Thunderstorm Warning | CYS | 38 min |
| Oct 15, 7:32 PM MDT | Severe Thunderstorm Warning | CYS | 43 min |
| Oct 15, 7:48 PM MDT | Severe Thunderstorm Warning | CYS | 57 min |
| Oct 15, 8:14 PM MDT | Severe Thunderstorm Warning | CYS | 46 min |
| Nov 28, 1:30 AM MST | Winter Weather Advisory | CYS | 34 hr |
| Dec 7, 2:38 PM MST | High Wind Watch | CYS | 4 days |
| Dec 7, 2:38 PM MST | High Wind Warning | CYS | 5 days |
| Dec 8, 2:53 AM MST | High Wind Watch | CYS | 3 days |
| Dec 8, 2:53 AM MST | High Wind Warning | CYS | 45 hr |
| Dec 16, 1:38 AM MST | High Wind Watch | CYS | 13 hr |
| Dec 16, 2:50 PM MST | High Wind Warning | CYS | 43 hr |
| Dec 17, 2:52 PM MST | High Wind Watch | CYS | 19 hr |
| Dec 18, 10:16 AM MST | High Wind Warning | CYS | 46 hr |
| Dec 18, 10:48 AM MST | Red Flag Warning | CYS | 37 hr |
| Dec 24, 1:17 AM MST | High Wind Warning | CYS | 40 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 | 40 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 36 |
| Flooding | |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 13 |
| High Wind Watch | 14 |
| Fire | |
| Red Flag Warning | 6 |
| Fire Weather Watch | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.