Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Flood Advisory |
| Area(s): | Beaverhead, MT |
| Effective: | 2026-07-22 @ 7:36 pm -> 2026-07-22 @ 8:45 pm |
| Onset: | 2026-07-22 @ 7:36 pm -> 2026-07-22 @ 8:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-22 @ 7:36 pm |
| Headline: | Flood Advisory issued July 22 at 6:36PM MDT until July 22 at 7:45PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall continues. * WHERE...North Central Beaverhead County in southwestern Montana... * WHEN...Until 745 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 635 PM MDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 2 inches of rain have fallen. - Additional rainfall amounts up to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Mainly rural areas of North Central Beaverhead County. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Northwest Beaverhead County; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-07-22 @ 7:16 pm -> 2026-07-23 @ 1:00 am |
| Onset: | 2026-07-22 @ 7:16 pm -> 2026-07-23 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-22 @ 7:16 pm |
| Headline: | Flood Watch issued July 22 at 6:16PM MDT until July 23 at 12:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of southwest Montana, including the following areas, Gallatin and Madison County Mountains and Centennial Mountains, Northwest Beaverhead County and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...Until midnight MDT tonight. * IMPACTS...Excessive runoff 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. * ADDITIONAL DETAILS... - Slow moving thunderstorms capable of producing heavy rain are expected through the evening. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Gallatin, MT |
| Effective: | 2026-07-22 @ 6:48 pm -> 2026-07-22 @ 9:45 pm |
| Onset: | 2026-07-22 @ 6:48 pm -> 2026-07-22 @ 9:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-22 @ 6:48 pm |
| Headline: | Flood Advisory issued July 22 at 5:48PM MDT until July 22 at 8:45PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northeastern Gallatin County in south central Montana... * WHEN...Until 845 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 547 PM MDT, Doppler radar indicated heavy rain with rainfall rates in excess of 1 inch per hour due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Mainly rural areas of Northeastern Gallatin County. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Madison, MT |
| Effective: | 2026-07-22 @ 6:43 pm -> 2026-07-22 @ 9:45 pm |
| Onset: | 2026-07-22 @ 6:43 pm -> 2026-07-22 @ 9:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-22 @ 6:43 pm |
| Headline: | Flood Advisory issued July 22 at 5:43PM MDT until July 22 at 8:45PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Central Madison County in southwestern Montana... * WHEN...Until 845 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 542 PM MDT, Doppler radar indicated heavy rain with rainfall rates in excess of 1 inch per hour due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Sheridan, Alder and Laurin. - http://www.weather.gov/safety/flood |
| Alert: | Flood Advisory |
| Area(s): | Madison, MT |
| Effective: | 2026-07-22 @ 5:28 pm -> 2026-07-22 @ 8:30 pm |
| Onset: | 2026-07-22 @ 5:28 pm -> 2026-07-22 @ 8:30 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-22 @ 5:28 pm |
| Headline: | Flood Advisory issued July 22 at 4:28PM MDT until July 22 at 7:30PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northeastern Madison County in southwestern Montana... * WHEN...Until 730 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 427 PM MDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 1.5 inches of rain have fallen. - Rainfall rates up to 2 inches per hour have been observed at times with these thunderstorms. - Some locations that will experience flooding include... Pony, Harrison, Norris and Mcallister. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Red Lodge Foothills; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-07-22 @ 4:16 pm -> 2026-07-23 @ 3:00 am |
| Onset: | 2026-07-22 @ 4:16 pm -> 2026-07-23 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-22 @ 4:16 pm |
| Headline: | Flood Watch issued July 22 at 3:16PM MDT until July 23 at 2:00AM MDT by NWS Billings MT |
| Description: |
The combination of a moist and unstable air mass with slow moving thunderstorms capable of producing very heavy rain, will bring a risk of flash flooding late this afternoon and evening. * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...Until 2 AM MDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, streams, and other low-lying and flood-prone locations. Recent burn scars, including the Robertson Draw and East Side south of Red Lodge, and the Elk along the eastern slopes of the Bighorn Mountains, are at risk of experiencing flash flooding and debris flows. * ADDITIONAL DETAILS... - Thunderstorms capable of producing very heavy rain are expected late this afternoon and evening. These storms may cause localized flash flooding. - http://www.weather.gov/safety/flood |
| Alert: | Fire Weather Watch |
| Area(s): | Dawson/McCone/Prairie/Richland/Wibaux Counties; Northern Valley and Northern Phillips Counties; The Little Rockies; The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge; Southern Petroleum and Southern Garfield Counties |
| Effective: | 2026-07-22 @ 12:51 pm -> 2026-07-23 @ 7:00 am |
| Onset: | 2026-07-24 @ 11:00 am -> 2026-07-24 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2026-07-22 @ 12:51 pm |
| Headline: | Fire Weather Watch issued July 22 at 11:51AM MDT until July 24 at 9:00PM MDT by NWS Glasgow MT |
| Description: |
The National Weather Service in Glasgow has issued a Fire Weather Watch, which is in effect from Friday morning through Friday evening. * AFFECTED AREA...Fire weather zones 122, 134, 135, 136, and 137. * WIND...West at 15 to 25 mph with gusts to 35 mph. * HUMIDITY...As low as 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Extreme Heat Watch |
| Area(s): | Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft |
| Effective: | 2026-07-22 @ 11:21 am -> 2026-07-23 @ 2:30 am |
| Onset: | 2026-07-24 @ 1:00 pm -> 2026-07-26 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-22 @ 11:21 am |
| Headline: | Extreme Heat Watch issued July 22 at 10:21AM MDT until July 26 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Dangerously hot conditions with heat index values up to 100 possible. * WHERE...Bears Paw Mountains and Southern Blaine, Fergus County below 4500ft, Hill County, and Northern Blaine County. * WHEN...From Friday afternoon through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. |
| Alert: | Extreme Heat Watch |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Western Roosevelt; Petroleum; Garfield; McCone; Richland; Dawson; Prairie; Wibaux; Northern Phillips; Southwest Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2026-07-22 @ 11:03 am -> 2026-07-23 @ 4:00 pm |
| Onset: | 2026-07-24 @ 11:00 am -> 2026-07-26 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2026-07-22 @ 11:03 am |
| Headline: | Extreme Heat Watch issued July 22 at 10:03AM MDT until July 26 at 10:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Dangerously hot conditions with heat index values up to 101 possible. * WHERE...A portion of northeast Montana. * WHEN...From Friday morning through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. |