Cheyenne, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Central Laramie Range and Southwest Platte County; East Platte County; Goshen County; South Laramie Range Foothills; Central Laramie County; East Laramie County |
| Effective: | 2026-09-19 @ 3:32 pm -> 2026-09-19 @ 4:15 pm |
| Onset: | 2026-09-19 @ 3:32 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Cheyenne WY on 2026-09-19 @ 3:32 pm |
| Headline: | Special Weather Statement issued September 19 at 2:32PM MDT by NWS Cheyenne WY |
| Description: |
At 231 PM MDT, Doppler radar was tracking gusty showers and thunderstorms along a line extending from 13 miles southwest of Bordeaux to 9 miles southwest of Chugwater to 6 miles northwest of Whitaker. Movement was east at 30 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... Chugwater, Whitaker, and Slater. |
| Alert: | Flood Watch |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Northern Park; Golden Valley; Red Lodge Foothills; Northern Big Horn; Southern Rosebud; Judith Gap; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Crazy Mountains; Southern Big Horn; Southeastern Carbon; Northern Sweet Grass; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone; Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-09-19 @ 2:30 pm -> 2026-09-20 @ 2:30 pm |
| Onset: | 2026-09-19 @ 2:30 pm -> 2026-09-20 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-09-19 @ 2:30 pm |
| Headline: | Flood Watch issued September 19 at 1:30PM MDT until September 20 at 6:00PM MDT by NWS Billings MT |
| Description: |
A slow moving weather system will continue to impact the region through Sunday. Thunderstorms embedded in the more general rainfall have the potential to produce flash flooding, particularly over recent burn scars. * WHAT...Flooding caused by excessive rainfall is possible, along with flash flooding over recent burn scars. * WHERE...All of South Central and Southeast Montana, and Sheridan County Wyoming. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of creeks and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Total rainfall amounts between 1 and 3 inches will be common across the watch area. Locally heavier totals over 4 inches are possible where thunderstorm activity is more persistent. - The Robertson Draw, East Side, Elk, and McGhee-Remington burn scars are particularly vulnerable to Flash Flooding and debris flows. Any other burn scars from this summer will have elevated Flash Flood potential as well. - http://www.weather.gov/safety/flood |
| Alert: | Hydrologic Outlook |
| Area(s): | Big Horn, WY; Fremont, WY; Hot Springs, WY; Johnson, WY; Natrona, WY; Park, WY; Sweetwater, WY; Teton, WY; Washakie, WY |
| Effective: | 2026-09-19 @ 12:59 pm -> 2026-09-20 @ 10:00 am |
| Onset: | 2026-09-19 @ 12:59 pm |
| Severity: | Unknown |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-09-19 @ 12:59 pm |
| Headline: | Hydrologic Outlook issued September 19 at 11:59AM MDT by NWS Riverton WY |
| Description: |
ESFRIW Periods of showers and thunderstorms are expected across the northern half of Wyoming Saturday and Sunday as a wet weather system shifts east across the state. This weather system is funneling abundant tropical moisture into northern and eastern portions of the state with it's eastward progression. Given the high moisture content, many thunderstorms could feature heavy rainfall and possibly lead to localized flooding. Poor drainage areas, urban areas, and steep terrain will be the most susceptible locations for this isolated flooding. Many locations could see an additional 0.5" to 1.25" of rain through Sunday afternoon, with a majority of this rain falling quickly in thunderstorms. Remember, if you encounter a flooded roadway, turn around don't down! |
| Alert: | Flood Watch |
| Area(s): | Yellowstone National Park; Absaroka Mountains; Cody Foothills; Owl Creek and Bridger Mountains; Bighorn Mountains West; Bighorn Mountains Southeast; Northeast Johnson County; Southeast Johnson County |
| Effective: | 2026-09-19 @ 12:54 pm -> 2026-09-20 @ 8:00 am |
| Onset: | 2026-09-19 @ 12:54 pm -> 2026-09-20 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Riverton WY on 2026-09-19 @ 12:54 pm |
| Headline: | Flood Watch issued September 19 at 11:54AM MDT until September 20 at 6:00PM MDT by NWS Riverton WY |
| Description: |
* WHAT...Flash flooding caused by moderate to heavy rainfall is possible, especially in terrain and poor drainage areas. * WHERE...Portions of central, north central, and northwest Wyoming, including the following areas, in central Wyoming, Owl Creek and Bridger Mountains. In north central Wyoming, Bighorn Mountains Southeast, Bighorn Mountains West, Northeast Johnson County and Southeast Johnson County. In northwest Wyoming, Absaroka Mountains, Cody Foothills and Yellowstone National Park. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive rainfall may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas and around steep terrain. * ADDITIONAL DETAILS... - A slow moving weather system will move across Wyoming today and Sunday and bring rounds of showers and thunderstorms to the region, especially northern Wyoming. Any shower or thunderstorm could produce moderate to heavy rainfall across the Watch Area. - http://www.weather.gov/safety/flood |
