National Weather ServiceWyomingRed Flag WarningArchive to October 1, 2026
Red Flag Warnings in Wyoming
The National Weather Service issued 34 red flag warnings for Wyoming in 2025 and 61 a year on average in 2008-2025; in 2021-2025 it had the 7th most of any state. 2026 through September: 108, 103% above the average of 53 for those months in 2008-2025. Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland was covered most often (279 times since 2008).
How many red flag warnings does Wyoming get?
Every red flag warning that covered part of Wyoming. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 108 |
| 2025 | 34 |
| 2024 | 94 |
| 2023 | 17 |
| 2022 | 57 |
| 2021 | 102 |
| 2020 | 102 |
| 2019 | 60 |
| 2018 | 75 |
| 2017 | 48 |
| 2016 | 94 |
| 2015 | 81 |
| 2014 | 25 |
| 2013 | 19 |
| 2012 | 155 |
| 2011 | 28 |
| 2010 | 65 |
| 2009 | 16 |
| 2008 | 29 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Wyoming get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Wyoming?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland | 279 | 58 | September 14, 2026 |
| Natrona County/Casper BLM | 249 | 53 | September 14, 2026 |
| Southwest Carbon County | 237 | 36 | September 14, 2026 |
| Southern Campbell | 215 | 60 | September 7, 2026 |
| Upper North Platte River Basin | 212 | 33 | September 9, 2026 |
| Platte/Goshen/Central and Eastern Laramie | 201 | 0 | November 26, 2021 |
| Central and Northern Carbon/Ferris-Seminoe-Shirley Mountains | 194 | 0 | September 26, 2021 |
| South Laramie Range/Medicine Bow NF | 183 | 0 | July 8, 2021 |
| Sweetwater County/Rock Springs BLM/Flaming Gorge NRA | 180 | 32 | September 14, 2026 |
| Granite/Green/Ferris/Rattlesnake Mountains | 171 | 44 | September 14, 2026 |
| North Laramie Range/Medicine Bow NF | 163 | 0 | September 25, 2021 |
| Laramie Valley/Shirley Basin | 158 | 0 | September 26, 2021 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest red flag warnings for Wyoming in AreaZine's record
NWS CheyenneWarningSeptember 14, 2026
Red Flag Warning: Pine Ridge/Nebraska National Forest, Box Butte/South Sioux/Niobrara River and Lower North Platte River Basin/Scottsbluff National Monument, NE and WY
Expired 8:00 p.m. MDT, September 14, 2026
NWS RivertonWarningSeptember 13, 2026
Red Flag Warning: Sweetwater County/Rock Springs BLM/Flaming Gorge NRA, Natrona County/Casper BLM, Upper Wind River Basin/Wind River Basin and 2 more, WY
Expired 8:00 p.m. MDT, September 14, 2026
NWS Rapid CityWarningSeptember 11, 2026
Red Flag Warning: Southern Black Hills, Fall River County Area, Custer County Plains and 4 more, SD and WY
Expired 7:00 p.m. MDT, September 11, 2026
NWS CheyenneWarningSeptember 11, 2026
Red Flag Warning: Southern Laramie Range, Laramie Foothills and High Plains, Laramie East High Plains and 1 more, WY
Expired 7:00 p.m. MDT, September 11, 2026
NWS CheyenneWarningSeptember 10, 2026
Red Flag Warning: Southwest Carbon County, Sierra Madre Range/Medicine Bow NF, Snowy Range/Medicine Bow NF and 3 more, WY
Expired 8:00 p.m. MDT, September 10, 2026
NWS RivertonWarningSeptember 9, 2026
Red Flag Warning: Absaroka Mountains/North Shoshone NF, Owl Creek Mountains and East Wind River Mountains/South Shoshone NF, WY
Expired 9:00 p.m. MDT, September 10, 2026
NWS CheyenneWarningSeptember 8, 2026
Red Flag Warning: Southwest Carbon County and Southern Laramie Valley, WY
Expired 8:00 p.m. MDT, September 8, 2026
NWS RivertonWarningSeptember 7, 2026
Red Flag Warning: North Bighorn Basin/Worland BLM and South Bighorn Basin/Worland BLM, MT and WY
Expired 7:00 p.m. MDT, September 7, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a red flag warning?
A red flag warning means critical fire weather is happening or about to happen: strong wind, very low humidity and dry fuels together, so a fire that starts can spread fast. Each office sets the criteria with its land-management partners. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Wyoming.