Yellowstone National Park, Wyoming
Regional Weather Alerts
| 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 @ 11:40 pm -> 2026-09-20 @ 7:00 pm |
| Onset: | 2026-09-19 @ 11:40 pm -> 2026-09-20 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-09-19 @ 11:40 pm |
| Headline: | Flood Watch issued September 19 at 10:40PM 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. The risk of flooding continues, especially over Southeast Montana and Northeast Wyoming. * 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... - The heaviest rainfall is slowly shifting over Southeastern Montana and Northeast Wyoming. The risk of flooding over south-centeral Montana is decreasing. - 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: | Flood Watch |
| Area(s): | Petroleum; Garfield; Dawson; Prairie; Wibaux |
| Effective: | 2026-09-19 @ 2:15 pm -> 2026-09-20 @ 5:15 am |
| Onset: | 2026-09-19 @ 2:15 pm -> 2026-09-20 @ 7:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2026-09-19 @ 2:15 pm |
| Headline: | Flood Watch issued September 19 at 1:15PM MDT until September 20 at 6:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northeast Montana, including the following counties, Dawson, Garfield, Petroleum, Prairie and Wibaux. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Heavy rain is expected along and south of MT 200 between Winnett, Jordan and Glendive and south of I 94 between Glendive and Wibaux today, tonight, and Sunday morning. Between one and two inches of rain is likely with heavier rain possible in embedded thunderstorms. - http://www.weather.gov/safety/flood |
