Alert archive / Wyoming / 2026
Weather alerts in Wyoming, September 2026
156 weather alerts in September 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in September 2026. Tap one for its archive.
- Alerts
- 156
- Warnings
- 29
- Watches
- 8
- Advisories
- 9
- Busiest day
- September 18, 202628 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 2:05 AM MDT | Fire Weather Watch | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more | 7 hr |
| Sep 2, 9:22 AM MDT | Red Flag Warning | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more | 36 hr |
| Sep 2, 12:09 PM MDT | Red Flag Warning | CYS | Converse, Goshen, Niobrara, Platte | 32 hr |
| Sep 2, 12:10 PM MDT | Red Flag Warning | BYZ | Big Horn, Johnson, Sheridan, Washakie | 33 hr |
| Sep 2, 12:22 PM MDT | Red Flag Warning | UNR | Campbell, Weston | 32 hr |
| Sep 2, 12:41 PM MDT | Special Weather Statement | RIW | Natrona | 49 min |
| Sep 2, 12:47 PM MDT | Special Weather Statement | CYS | Converse | 43 min |
| Sep 2, 1:09 PM MDT | Mesoscale Discussion | SPC | Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 2 more | 2 hr |
| Sep 2, 2:07 PM MDT | Special Weather Statement | UNR | Weston | 38 min |
| Sep 2, 3:44 PM MDT | Special Weather Statement | CYS | Laramie | 31 min |
| Sep 2, 4:23 PM MDT | Special Weather Statement | CYS | Laramie | 37 min |
| Sep 2, 4:58 PM MDT | Special Weather Statement | CYS | Laramie | 32 min |
| Sep 2, 5:55 PM MDT | Special Weather Statement | RIW | Fremont | 20 min |
| Sep 2, 6:19 PM MDT | Special Weather Statement | RIW | Fremont | 26 min |
| Sep 2, 6:33 PM MDT | Special Weather Statement | RIW | Sweetwater | 27 min |
| Sep 3, 2:53 AM MDT | Fire Weather Watch | BYZ | Sheridan | 11 hr |
| Sep 3, 11:12 AM MDT | Red Flag Warning | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more | 34 hr |
| Sep 3, 2:19 PM MDT | Red Flag Warning | BYZ | Big Horn, Johnson, Sheridan, Washakie | 31 hr |
| Sep 3, 9:19 PM MDT | Red Flag Warning | UNR | Campbell, Crook, Weston | 23 hr |
| Sep 6, 3:54 PM MDT | Special Weather Statement | CYS | Niobrara | 36 min |
| Sep 6, 4:15 PM MDT | Special Weather Statement | CYS | Laramie | 30 min |
| Sep 6, 4:48 PM MDT | Special Weather Statement | CYS | Goshen | 27 min |
| Sep 6, 5:12 PM MDT | Special Weather Statement | CYS | Goshen | 33 min |
| Sep 6, 5:27 PM MDT | Special Weather Statement | CYS | Niobrara | 33 min |
| Sep 6, 5:36 PM MDT | Mesoscale Discussion | SPC | Goshen | 114 min |
| Sep 6, 6:52 PM MDT | Special Weather Statement | CYS | Niobrara | 23 min |
| Sep 6, 7:16 PM MDT | Special Weather Statement | UNR | Weston | 29 min |
| Sep 6, 7:27 PM MDT | Special Weather Statement | CYS | Niobrara | 63 min |
| Sep 6, 8:19 PM MDT | Special Weather Statement | CYS | Platte | 26 min |
| Sep 6, 8:28 PM MDT | Special Weather Statement | CYS | Laramie | 32 min |
| Sep 6, 8:48 PM MDT | Special Weather Statement | CYS | Platte | 27 min |
| Sep 6, 9:14 PM MDT | Special Weather Statement | CYS | Platte | 31 min |
| Sep 6, 9:17 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara, Platte | 43 min |
| Sep 6, 9:40 PM MDT | Red Flag Warning | UNR | Campbell, Crook, Weston | 21 hr |
| Sep 6, 9:59 PM MDT | Special Weather Statement | UNR | Weston | 31 min |
| Sep 6, 10:10 PM MDT | Special Weather Statement | CYS | Goshen | 35 min |
| Sep 6, 10:36 PM MDT | Special Weather Statement | UNR | Weston | 24 min |
| Sep 6, 10:46 PM MDT | Special Weather Statement | CYS | Goshen | 29 min |
| Sep 6, 10:49 PM MDT | Special Weather Statement | CYS | Goshen | 26 min |
| Sep 6, 10:49 PM MDT | Severe Thunderstorm Warning | UNR | Crook, Weston | 56 min |
| Sep 6, 11:25 PM MDT | Special Weather Statement | CYS | Laramie | 35 min |
| Sep 6, 11:28 PM MDT | Special Weather Statement | CYS | Goshen | 47 min |
| Sep 6, 11:49 PM MDT | Special Weather Statement | UNR | Weston | 26 min |
| Sep 7, 12:05 AM MDT | Special Weather Statement | CYS | Laramie | 25 min |
| Sep 7, 12:52 AM MDT | Red Flag Warning | RIW | Big Horn, Hot Springs, Park, Washakie | 18 hr |
| Sep 7, 12:53 AM MDT | Special Weather Statement | CYS | Goshen | 52 min |
| Sep 7, 5:39 PM MDT | Special Weather Statement | CYS | Laramie | 36 min |
| Sep 7, 6:46 PM MDT | Special Weather Statement | CYS | Laramie | 29 min |
| Sep 8, 12:58 AM MDT | Red Flag Warning | RIW | Fremont, Hot Springs, Johnson, Lincoln, Natrona, Park and 4 more | 68 hr |
| Sep 8, 6:44 AM MDT | Red Flag Warning | CYS | Albany, Carbon, Converse, Goshen, Niobrara, Platte | 13 hr |
| Sep 8, 11:34 AM MDT | Freeze Warning | RIW | Fremont, Lincoln, Sublette, Sweetwater, Teton | 21 hr |
| Sep 8, 11:49 AM MDT | Fire Weather Watch | RIW | Lincoln, Sublette, Sweetwater, Uinta | 14 hr |
| Sep 8, 6:39 PM MDT | Special Weather Statement | CYS | Platte | 36 min |
| Sep 8, 8:06 PM MDT | Red Flag Warning | CYS | Albany, Carbon, Converse, Goshen, Laramie, Platte | 48 hr |
| Sep 10, 11:12 AM MDT | Red Flag Warning | UNR | Weston | 31 hr |
| Sep 10, 12:12 PM MDT | Red Flag Warning | CYS | Albany, Goshen, Laramie, Platte | 31 hr |
| Sep 11, 3:24 PM MDT | Special Weather Statement | CYS | Niobrara | 51 min |
| Sep 11, 6:06 PM MDT | Special Weather Statement | CYS | Albany | 39 min |
| Sep 11, 8:35 PM MDT | Special Weather Statement | CYS | Laramie | 40 min |
| Sep 13, 12:54 AM MDT | High Wind Watch | CYS | Albany, Carbon, Laramie, Platte | 29 hr |
| Sep 13, 1:00 AM MDT | Fire Weather Watch | RIW | Fremont, Natrona, Sweetwater | 9 hr |
| Sep 13, 1:07 AM MDT | Fire Weather Watch | CYS | Albany, Carbon, Converse, Goshen, Niobrara, Platte | 12 hr |
| Sep 13, 8:50 AM MDT | Freeze Warning | RIW | Lincoln | 24 hr |
| Sep 13, 10:03 AM MDT | Red Flag Warning | RIW | Fremont, Natrona, Sweetwater | 34 hr |
| Sep 13, 11:10 AM MDT | High Wind Warning | RIW | Fremont, Hot Springs, Park | 27 hr |
| Sep 13, 12:57 PM MDT | Red Flag Warning | CYS | Albany, Carbon, Converse, Goshen, Niobrara, Platte | 31 hr |
| Sep 13, 2:32 PM MDT | Special Weather Statement | CYS | Platte | 28 min |
| Sep 13, 2:47 PM MDT | Special Weather Statement | CYS | Goshen | 28 min |
| Sep 13, 3:18 PM MDT | Special Weather Statement | CYS | Goshen | 27 min |
| Sep 13, 4:39 PM MDT | Special Weather Statement | CYS | Goshen | 36 min |
| Sep 13, 5:09 PM MDT | Special Weather Statement | CYS | Goshen | 36 min |
| Sep 13, 7:10 PM MDT | Special Weather Statement | CYS | Goshen | 35 min |
| Sep 13, 9:14 PM MDT | Special Weather Statement | RIW | 46 min | |
| Sep 13, 9:15 PM MDT | Special Weather Statement | CYS | Niobrara | 45 min |
| Sep 13, 10:59 PM MDT | Special Weather Statement | RIW | Natrona | 31 min |
| Sep 13, 11:06 PM MDT | Special Weather Statement | CYS | Carbon | 39 min |
| Sep 14, 5:29 AM MDT | High Wind Warning | CYS | Albany, Carbon | 8 hr |
| Sep 14, 3:35 PM MDT | Freeze Warning | RIW | Lincoln | 17 hr |
| Sep 15, 11:29 PM MDT | Special Weather Statement | RIW | 46 min | |
| Sep 17, 10:33 AM MDT | Flood Watch | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 2 more | 3 days |
| Sep 17, 12:06 PM MDT | Flood Watch | BYZ | Sheridan | 3 days |
| Sep 17, 4:45 PM MDT | Special Weather Statement | RIW | Sweetwater | 30 min |
| Sep 17, 5:32 PM MDT | Special Weather Statement | CYS | Laramie | 13 min |
| Sep 17, 6:07 PM MDT | Special Weather Statement | RIW | Sweetwater | 23 min |
| Sep 17, 7:42 PM MDT | Special Weather Statement | RIW | Lincoln | 33 min |
| Sep 17, 8:19 PM MDT | Special Weather Statement | RIW | Lincoln | 41 min |
| Sep 17, 8:51 PM MDT | Special Weather Statement | RIW | Lincoln | 24 min |
| Sep 18, 5:45 AM MDT | Special Weather Statement | BYZ | Sheridan | 2 hr |
| Sep 18, 6:20 AM MDT | Special Weather Statement | SLC | Uinta | 25 min |
| Sep 18, 11:52 AM MDT | Special Weather Statement | RIW | Sweetwater | 38 min |
| Sep 18, 12:30 PM MDT | Special Weather Statement | RIW | Sweetwater | 45 min |
| Sep 18, 12:53 PM MDT | Mesoscale Discussion | SPC | Lincoln, Uinta | 3 hr |
| Sep 18, 1:39 PM MDT | Special Weather Statement | RIW | Fremont | 36 min |
| Sep 18, 1:51 PM MDT | Areal Flood Advisory | RIW | Fremont | 54 min |
| Sep 18, 1:55 PM MDT | Areal Flood Advisory | RIW | Fremont | 3 hr |
| Sep 18, 2:14 PM MDT | Special Weather Statement | RIW | Fremont | 46 min |
| Sep 18, 2:17 PM MDT | Special Weather Statement | RIW | 28 min | |
| Sep 18, 2:31 PM MDT | Severe Thunderstorm Warning | SLC | Uinta | 29 min |
| Sep 18, 2:32 PM MDT | Areal Flood Advisory | RIW | Fremont, Sweetwater | 118 min |
| Sep 18, 2:38 PM MDT | Special Weather Statement | CYS | 52 min | |
| Sep 18, 2:40 PM MDT | Special Weather Statement | RIW | 35 min | |
| Sep 18, 3:31 PM MDT | Special Weather Statement | RIW | Natrona | 44 min |
| Sep 18, 3:38 PM MDT | Special Weather Statement | SLC | Uinta | 52 min |
| Sep 18, 3:46 PM MDT | Special Weather Statement | RIW | Natrona | 44 min |
| Sep 18, 3:54 PM MDT | Special Weather Statement | CYS | Carbon | 51 min |
| Sep 18, 4:17 PM MDT | Special Weather Statement | RIW | Natrona | 43 min |
| Sep 18, 4:22 PM MDT | Special Weather Statement | CYS | Converse | 53 min |
| Sep 18, 4:38 PM MDT | Special Weather Statement | BYZ | Sheridan | 52 min |
| Sep 18, 4:40 PM MDT | Special Weather Statement | CYS | Converse | 50 min |
| Sep 18, 4:57 PM MDT | Special Weather Statement | RIW | Johnson | 48 min |
| Sep 18, 5:04 PM MDT | Special Weather Statement | BYZ | Sheridan | 56 min |
| Sep 18, 6:00 PM MDT | Special Weather Statement | UNR | Campbell | 30 min |
| Sep 18, 6:26 PM MDT | Special Weather Statement | UNR | Campbell | 34 min |
| Sep 18, 6:29 PM MDT | Special Weather Statement | CYS | Platte | 46 min |
| Sep 18, 6:36 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 39 min |
| Sep 18, 7:04 PM MDT | Special Weather Statement | CYS | Goshen | 41 min |
| Sep 18, 7:04 PM MDT | Special Weather Statement | UNR | Weston | 26 min |
| Sep 18, 7:08 PM MDT | Special Weather Statement | UNR | Campbell | 37 min |
| Sep 18, 7:56 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 49 min |
| Sep 19, 12:45 PM MDT | Special Weather Statement | CYS | Albany | 30 min |
| Sep 19, 1:40 PM MDT | Special Weather Statement | RIW | Uinta | 35 min |
| Sep 19, 2:32 PM MDT | Special Weather Statement | CYS | Laramie | 43 min |
| Sep 19, 5:47 PM MDT | Areal Flood Advisory | RIW | Fremont | 3 hr |
| Sep 19, 6:14 PM MDT | Areal Flood Advisory | RIW | Fremont | 3 hr |
| Sep 19, 6:22 PM MDT | Special Weather Statement | RIW | Natrona | 38 min |
| Sep 19, 6:25 PM MDT | Flash Flood Warning | RIW | Fremont | 3 hr |
| Sep 19, 6:34 PM MDT | Special Weather Statement | CYS | Albany | 41 min |
| Sep 19, 6:37 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 23 min |
| Sep 19, 6:59 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 31 min |
| Sep 19, 7:08 PM MDT | Special Weather Statement | RIW | Natrona | 37 min |
| Sep 19, 7:39 PM MDT | Areal Flood Advisory | RIW | Fremont | 3 hr |
| Sep 19, 7:56 PM MDT | Special Weather Statement | CYS | Carbon | 49 min |
| Sep 19, 9:36 PM MDT | Areal Flood Advisory | CYS | Niobrara | 3 hr |
| Sep 20, 1:10 PM MDT | Special Weather Statement | CYS | Laramie | 50 min |
| Sep 20, 1:56 PM MDT | Special Weather Statement | CYS | Laramie | 49 min |
| Sep 21, 4:57 AM MDT | Dense Fog Advisory | BYZ | Sheridan | 5 hr |
| Sep 22, 7:51 AM MDT | Dense Fog Advisory | CYS | Albany, Laramie | 87 min |
| Sep 22, 10:06 AM MDT | Special Weather Statement | BYZ | Sheridan | 39 min |
| Sep 22, 2:00 PM MDT | Special Weather Statement | RIW | Sweetwater | 30 min |
| Sep 22, 2:12 PM MDT | Special Weather Statement | CYS | Carbon | 48 min |
| Sep 22, 3:17 PM MDT | Special Weather Statement | RIW | 28 min | |
| Sep 22, 3:24 PM MDT | Special Weather Statement | CYS | Carbon | 51 min |
| Sep 22, 3:27 PM MDT | Special Weather Statement | SLC | Uinta | 48 min |
| Sep 22, 3:34 PM MDT | Special Weather Statement | CYS | Carbon | 56 min |
| Sep 22, 4:25 PM MDT | Special Weather Statement | CYS | Carbon | 65 min |
| Sep 22, 4:29 PM MDT | Special Weather Statement | CYS | Platte | 46 min |
| Sep 22, 5:23 PM MDT | Special Weather Statement | CYS | Platte | 37 min |
| Sep 22, 6:00 PM MDT | Special Weather Statement | CYS | Platte | 30 min |
| Sep 22, 6:25 PM MDT | Special Weather Statement | CYS | Platte | 35 min |
| Sep 22, 6:42 PM MDT | Special Weather Statement | RIW | Sublette | 48 min |
| Sep 22, 6:59 PM MDT | Special Weather Statement | CYS | Goshen | 31 min |
| Sep 22, 7:04 PM MDT | Special Weather Statement | CYS | Goshen | 26 min |
| Sep 22, 7:14 PM MDT | Special Weather Statement | CYS | Niobrara | 31 min |
| Sep 22, 7:18 PM MDT | Special Weather Statement | CYS | Goshen | 27 min |
| Sep 22, 7:32 PM MDT | Special Weather Statement | CYS | Goshen | 28 min |
| Sep 22, 7:50 PM MDT | Special Weather Statement | CYS | Carbon | 55 min |
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 | 7 |
| Mesoscale Discussion | 3 |
| Special Weather Statement | 107 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 7 |
| Cold | |
| Freeze Warning | 3 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Fire | |
| Red Flag Warning | 16 |
| Fire Weather Watch | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Goshen County27
- Fremont County20
- Platte County20
- Laramie County19
- Natrona County16
- Sweetwater County16
- Carbon County15
- Niobrara County14
- Albany County12
- Lincoln County11
- Weston County11
- Uinta County10
- Converse County10
- Sheridan County9
- Johnson County8
- Washakie County8
- Big Horn County7
- Hot Springs County7
- Park County7
- Sublette County6
- Campbell County6
- Crook County3
- Teton County2
Nearby
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. Rebuilt daily.