National Weather ServiceWyomingSevere Thunderstorm WarningArchive to October 1, 2026
Severe Thunderstorm Warnings in Wyoming
The National Weather Service issued 413 severe thunderstorm warnings for Wyoming in 2025 and 281 a year on average in 2008-2025; in 2021-2025 it had the 34th most of any state. 2026 through September: 337, 20% above the average of 280 for those months in 2008-2025. Laramie was covered most often (839 times since 2008).
How many severe thunderstorm warnings does Wyoming get?
Every severe thunderstorm warning that covered part of Wyoming. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 337 |
| 2025 | 413 |
| 2024 | 192 |
| 2023 | 499 |
| 2022 | 168 |
| 2021 | 145 |
| 2020 | 228 |
| 2019 | 577 |
| 2018 | 407 |
| 2017 | 151 |
| 2016 | 227 |
| 2015 | 284 |
| 2014 | 243 |
| 2013 | 380 |
| 2012 | 123 |
| 2011 | 228 |
| 2010 | 233 |
| 2009 | 223 |
| 2008 | 338 |
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 |
|---|---|---|---|
| Laramie | 839 | 251 | August 27, 2026 |
| Goshen | 824 | 293 | September 19, 2026 |
| Crook | 748 | 141 | September 7, 2026 |
| Campbell | 699 | 117 | August 12, 2026 |
| Platte | 635 | 210 | September 19, 2026 |
| Weston | 547 | 122 | September 7, 2026 |
| Niobrara | 517 | 163 | September 7, 2026 |
| Converse | 425 | 156 | September 7, 2026 |
| Albany | 379 | 138 | August 29, 2026 |
| Johnson | 316 | 73 | August 23, 2026 |
| Fremont | 305 | 101 | August 27, 2026 |
| Natrona | 299 | 96 | September 20, 2026 |
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 severe thunderstorm warnings for Wyoming in AreaZine's record
NWS RivertonWarningSeptember 19, 2026
Severe Thunderstorm Warning: Natrona, WY
Expired 7:00 p.m. MDT, September 19, 2026
NWS CheyenneWarningSeptember 6, 2026
Severe Thunderstorm Warning: Converse, Niobrara and Platte, WY
Expired 10:00 p.m. MDT, September 6, 2026
NWS CheyenneWarningAugust 29, 2026
Severe Thunderstorm Warning: Albany, WY
Expired 2:00 p.m. MDT, August 29, 2026
NWS CheyenneWarningAugust 26, 2026
Severe Thunderstorm Warning: Sioux, Goshen and Niobrara, NE and WY
Expired 5:30 p.m. MDT, August 26, 2026
NWS CheyenneWarningAugust 26, 2026
Severe Thunderstorm Warning: Laramie, WY
Expired 4:30 p.m. MDT, August 26, 2026
NWS CheyenneWarningAugust 25, 2026
Severe Thunderstorm Warning: Goshen and Platte, WY
Expired 12:00 a.m. MDT, August 26, 2026
NWS RivertonWarningAugust 22, 2026
Severe Thunderstorm Warning: Johnson and Natrona, WY
Expired 8:00 p.m. MDT, August 22, 2026
NWS CheyenneWarningAugust 22, 2026
Severe Thunderstorm Warning: Converse and Niobrara, WY
Expired 7:00 p.m. MDT, August 22, 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 severe thunderstorm warning?
A severe thunderstorm warning means a storm is producing, or is about to produce, hail one inch across or larger and/or winds of 58 mph or more. 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.