Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | South Laramie Range Foothills; Central Laramie County; East Laramie County |
| Effective: | 2026-05-16 @ 4:49 pm -> 2026-05-16 @ 5:15 pm |
| Onset: | 2026-05-16 @ 4:49 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-05-16 @ 4:49 pm |
| Headline: | Special Weather Statement issued May 16 at 3:49PM MDT by NWS Cheyenne WY |
| Description: |
At 348 PM MDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from 8 miles west of Gun Barrel to 10 miles northeast of Rockport. Movement was northeast at 20 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Burns, Laramie County Fairgrounds at Archer, Hillsdale, Meriden Rest Area, Gun Barrel, Carpenter, and Ranchettes. This includes Interstate 80 in Wyoming between mile markers 369 and 388. |
| Alert: | Winter Storm Watch |
| Area(s): | North Laramie Range; Snowy Range |
| Effective: | 2026-05-16 @ 1:10 pm -> 2026-05-17 @ 7:15 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-05-16 @ 1:10 pm |
| Headline: | Winter Storm Watch issued May 16 at 12:10PM MDT until May 18 at 6:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations over 12 inches possible. Winds could gust as high as 30 to 40 mph. * WHERE...Snowy Range and North Laramie Range. * WHEN...From Sunday evening through Monday afternoon. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. |
| Alert: | Winter Storm Watch |
| Area(s): | South Laramie Range |
| Effective: | 2026-05-16 @ 1:10 pm -> 2026-05-17 @ 7:15 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-05-16 @ 1:10 pm |
| Headline: | Winter Storm Watch issued May 16 at 12:10PM MDT until May 18 at 6:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations over 6 inches possible. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From Sunday evening through Monday afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. |
| Alert: | Winter Storm Watch |
| Area(s): | Central Carbon County |
| Effective: | 2026-05-16 @ 1:10 pm -> 2026-05-17 @ 7:15 am |
| Onset: | 2026-05-18 @ 1:00 am -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-05-16 @ 1:10 pm |
| Headline: | Winter Storm Watch issued May 16 at 12:10PM MDT until May 18 at 6:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations over 6 inches possible. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From late Sunday night through Monday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches. |
| Alert: | Winter Storm Watch |
| Area(s): | Ferris/Seminoe/Shirley Mountains; North Snowy Range Foothills |
| Effective: | 2026-05-16 @ 1:10 pm -> 2026-05-17 @ 7:15 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Cheyenne WY on 2026-05-16 @ 1:10 pm |
| Headline: | Winter Storm Watch issued May 16 at 12:10PM MDT until May 18 at 6:00PM MDT by NWS Cheyenne WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations over 6 inches possible. Winds could gust as high as 35 to 45 mph. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From Sunday evening through Monday afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. |
| Alert: | Winter Storm Warning |
| Area(s): | East Sweetwater County |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Storm Warning issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 3 and 6 inches. Winds gusting as high as 50 mph. * WHERE...East Sweetwater County. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult, especially along Interstate 80. The hazardous conditions could impact the Monday morning and evening commutes. |
| Alert: | Winter Storm Warning |
| Area(s): | Green Mountains and Rattlesnake Range |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Storm Warning issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 6 and 11 inches possible. Winds could gust as high as 50 mph. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning and evening commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Upper Wind River Basin; Wind River Basin |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 1 and 4 inches. Winds gusting as high as 45 mph. * WHERE...Upper Wind River Basin and Wind River Basin. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult due to a combination of snow and wind. The hazardous conditions could impact the Monday morning commute. |
| Alert: | Winter Storm Warning |
| Area(s): | Casper Mountain |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Storm Warning issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 7 and 14 inches possible. Winds could gust as high as 40 mph. * WHERE...Casper Mountain. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning and evening commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Lander Foothills |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches. * WHERE...Lander Foothills. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...There will likely be a steep gradient in snow totals in Lander town towards the mountains. Amounts will likely quickly change from 3 to 6 inches in town to 10 inches or more at Sinks Canyon. |
| Alert: | Winter Weather Advisory |
| Area(s): | Absaroka Mountains; Owl Creek and Bridger Mountains; Bighorn Mountains West; Bighorn Mountains Southeast |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 4 and 8 inches, with 7 to 12 inches at the highest elevations of the southern Absaroka and southern Bighorn Mountains. Winds gusting as high as 50 mph. * WHERE...Owl Creek and Bridger Mountains, Bighorn Mountains Southeast, Bighorn Mountains West, and Absaroka Mountains. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult, especially over mountain passes such as Powder River Pass. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northeast Johnson County; Southeast Johnson County |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations up to 3 inches. Winds gusting as high as 50 mph. * WHERE...Northeast Johnson County and Southeast Johnson County. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult due to a combination of snow and wind. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Greatest snow totals will occur along the mountains and further southwards towards Kaycee. |
| Alert: | Winter Weather Advisory |
| Area(s): | Upper Green River Basin |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations 1 to 3. Winds gusting as high as 45 mph. * WHERE...Upper Green River Basin. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Greatest impacts will be further south, towards Farson. Here, winds and snow totals will be greatest. |
| Alert: | Winter Weather Advisory |
| Area(s): | Cody Foothills; Southwest Bighorn Basin |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations 1 to 3 inches. Winds gusting as high as 55 mph. * WHERE...Southwest Bighorn Basin and Cody Foothills. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult due to a combination of snow and wind. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...There is potential for a steep gradient in snow totals along the mountains, with snow totals quickly going from around 1 inch to 4 inches or more. |
| Alert: | Winter Storm Warning |
| Area(s): | Natrona County Lower Elevations |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Storm Warning issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 3 and 5 inches. Areas of higher amounts up to to 7 inches between Hiland and Casper. Winds gusting as high as 40 mph. * WHERE...Natrona County Lower Elevations. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning and evening commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Rock Springs and Green River; Flaming Gorge |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. Winds gusting as high as 45 mph. * WHERE...Flaming Gorge and Rock Springs and Green River. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult, especially along Interstate 80. The hazardous conditions could impact the Monday morning and evening commutes. |
| Alert: | Winter Weather Advisory |
| Area(s): | Wind River Mountains West |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 50 mph. * WHERE...Wind River Mountains West. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be difficult, especially along South Pass. The hazardous conditions could impact the Monday morning and evening commutes. |
| Alert: | Winter Storm Warning |
| Area(s): | Wind River Mountains East |
| Effective: | 2026-05-16 @ 12:52 pm -> 2026-05-17 @ 8:30 am |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Riverton WY on 2026-05-16 @ 12:52 pm |
| Headline: | Winter Storm Warning issued May 16 at 11:52AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Heavy snow possible. Total snow accumulations between 8 and 16 inches possible. Winds could gust as high as 50 mph. * WHERE...Wind River Mountains East. * WHEN...From 6 PM Sunday to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes, including over South Pass. |
| Alert: | Winter Weather Advisory |
| Area(s): | Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains |
| Effective: | 2026-05-16 @ 12:20 pm -> 2026-05-17 @ 12:30 pm |
| Onset: | 2026-05-17 @ 7:00 pm -> 2026-05-18 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-05-16 @ 12:20 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:20AM MDT until May 18 at 12:00PM MDT by NWS Billings MT |
| Description: |
* WHAT...Snow and blowing snow expected. Total snow accumulations between 5 and 10 inches. Winds gusting as high as 45 mph. * WHERE...In Montana, Pryor/Northern Bighorn Mountains. In Wyoming, Northeast Bighorn Mountains. * WHEN...From 6 PM Sunday to noon MDT Monday. * IMPACTS...Travel could be very difficult on Highway 14. Areas of blowing snow could significantly reduce visibility at times. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Back country activities will be impacted by difficult winter conditions. |
| Alert: | Winter Weather Advisory |
| Area(s): | Western Uinta Mountains; Southwest Wyoming |
| Effective: | 2026-05-16 @ 12:10 pm -> 2026-05-17 @ 3:15 am |
| Onset: | 2026-05-17 @ 1:00 pm -> 2026-05-23 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Salt Lake City UT on 2026-05-16 @ 12:10 pm |
| Headline: | Winter Weather Advisory issued May 16 at 11:10AM MDT until May 23 at 6:00PM MDT by NWS Salt Lake City UT |
| Description: |
* WHAT...Snow expected. Total snow accumulations of 6 to 12 inches for the Western Uinta Mountains and 2 to 5 inches for southwest Wyoming. * WHERE...In Utah, Western Uinta Mountains. In Wyoming, Southwest Wyoming. * WHEN...From noon Sunday to 6 PM MDT Saturday. * IMPACTS...Some impacts expected. Roads may be slick in spots due to slush, snow, and drifted snow. Travel could be difficult at times. Traction law restrictions may be enacted. |