Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-08-09 @ 12:57 pm -> 2026-08-10 @ 5:00 am |
| Onset: | 2026-08-09 @ 10:00 pm -> 2026-08-10 @ 5:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-08-09 @ 12:57 pm |
| Headline: | Lake Wind Advisory issued August 9 at 11:57AM MDT until August 10 at 4:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Northeast winds 15 to 20 mph with gusts up to 35 mph expected. * WHERE...Fort Peck Lake. * WHEN...From 9 PM this evening to 4 AM MDT Monday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Wave heights as high as 4 feet. |
| Alert: | Air Quality Alert |
| Area(s): | Broadwater, MT; Gallatin, MT; Park, MT |
| Effective: | 2026-08-09 @ 9:15 am -> 2026-08-10 @ 10:00 am |
| Onset: | 2026-08-09 @ 9:15 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Great Falls MT on 2026-08-09 @ 9:17 am |
| Headline: | Air Quality Alert issued August 9 at 8:15AM MDT by NWS Great Falls MT |
| Description: |
AQAMT The Air Quality Alert for Broadwater, Gallatin and Park Counties has been cancelled. For more information visit the Montana Department of Environmental Quality at www.todaysair.mt.gov |
| Alert: | Air Quality Alert |
| Area(s): | Beaverhead, MT; Deer Lodge, MT; Flathead, MT; Granite, MT; Jefferson, MT; Lake, MT; Lewis and Clark, MT; Lincoln, MT; Madison, MT; Mineral, MT; Missoula, MT; Powell, MT; Ravalli, MT; Sanders, MT; Silver Bow, MT |
| Effective: | 2026-08-09 @ 9:15 am -> 2026-08-10 @ 10:00 am |
| Onset: | 2026-08-09 @ 9:15 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Great Falls MT on 2026-08-09 @ 9:17 am |
| Headline: | Air Quality Alert issued August 9 at 8:15AM MDT by NWS Great Falls MT |
| Description: |
AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Beaverhead, Deer Lodge, Flathead, Granite, Jefferson, Lake, Lewis and Clark, Lincoln, Madison, Mineral, Missoula, Powell, Ravalli, Sanders, Silver Bow counties in effect until 9AM on 08/10/2026 An Air Quality Alert means that particulates have been trending upwards and that an exceedance of the 24 hour National Ambient Air Quality Standard (NAAQS) has occurred or may occur in the near future. Elevated particulate levels from wildfire smoke As of 7AM on 08/09/2026, particulate levels in Columbia Falls are Very Unhealthy. As of 7AM on 08/09/2026, particulate levels in Dillon, Libby and Thompson Falls are Unhealthy. As of 7AM on 08/09/2026, particulate levels in Billings, Butte, Hamilton, Lewistown and Sleeping Giant are Unhealthy for Sensitive Groups. As of 7AM on 08/09/2026, particulate levels in Cut Bank, Frenchtown, Great Falls, Havre, Helena, Malta and Missoula are Moderate. When air quality is Very Unhealthy... State and local health officials recommend that people with respiratory or heart disease, the elderly, and children should avoid any outdoor activity; everyone else should avoid prolonged exertion. When air quality is Unhealthy... State and local health officials recommend that people with respiratory or heart disease, the elderly, and children should avoid prolonged exertion; everyone else should limit prolonged exertion. When air quality is Unhealthy for Sensitive Groups... State and local health officials recommend that people with respiratory or heart disease, the elderly and children should limit prolonged exertion. When air quality is Moderate... State and local health officials recommend that unusually sensitive people should consider reducing prolonged or heavy exertion. For more information visit the Montana Department of Environmental Quality at http://todaysair.mtdeq.us |