Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Flood Watch |
| Area(s): | Musselshell; Northern Stillwater; Golden Valley; Red Lodge Foothills; Northern Big Horn; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Southern Big Horn; Southeastern Carbon; Northern Sweet Grass; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Melville Foothills; Northeastern Yellowstone; Southwestern Yellowstone; Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-07-15 @ 6:45 am -> 2026-07-16 @ 4:00 am |
| Onset: | 2026-07-15 @ 1:00 pm -> 2026-07-16 @ 4:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-15 @ 6:45 am |
| Headline: | Flood Watch issued July 15 at 5:45AM MDT until July 16 at 3:00AM MDT by NWS Billings MT |
| Description: |
Scattered thunderstorms capable of producing very heavy rainfall are expected this afternoon and evening. * WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. The risk of flash flooding includes recent burn scars such as the Robertson Draw and East Side Fires south of Red Lodge, and the Elk Fire along the eastern slopes of the Bighorn Mountains. * WHERE...Portions of Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Golden Valley, Livingston Area, Melville Foothills, Musselshell, Northeastern Yellowstone, Northern Big Horn, Northern Carbon, Northern Stillwater, Northern Sweet Grass, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon, Southern Big Horn and Southwestern Yellowstone and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From noon MDT today through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Expect slow-moving thunderstorms capable of producing very high rainfall rates. - http://www.weather.gov/safety/flood |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-07-15 @ 12:54 am -> 2026-07-15 @ 1:00 pm |
| Onset: | 2026-07-15 @ 12:54 am -> 2026-07-15 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-15 @ 12:54 am |
| Headline: | Lake Wind Advisory issued July 14 at 11:54PM MDT until July 15 at 12:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Northeast winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Fort Peck Lake. * WHEN...Until noon MDT Wednesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Wave heights as high as 3 to 4 feet. |
| Alert: | Extreme Heat Warning |
| Area(s): | Richland; Dawson; Prairie; Wibaux |
| Effective: | 2026-07-15 @ 12:54 am -> 2026-07-15 @ 1:00 pm |
| Onset: | 2026-07-15 @ 12:54 am -> 2026-07-16 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-15 @ 12:54 am |
| Headline: | Extreme Heat Warning issued July 14 at 11:54PM MDT until July 16 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures in the upper 90s to around 100 degrees. * WHERE...Dawson, Prairie, Richland, and Wibaux Counties. * WHEN...Until 2 AM MDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Custer; Fallon; Powder River; Carter |
| Effective: | 2026-07-15 @ 12:01 am -> 2026-07-16 @ 12:15 am |
| Onset: | 2026-07-15 @ 12:01 am -> 2026-07-16 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-15 @ 12:01 am |
| Headline: | Extreme Heat Warning issued July 14 at 11:01PM MDT until July 16 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Very hot conditions with high temperatures of 98 to 103 degrees on Wednesday. * WHERE...Carter, Custer, Fallon, and Powder River. * WHEN...Until midnight MDT Wednesday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very warm nighttime temperatures will provide only limited relief. |