Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Deerlodge/Western Beaverhead National Forest; Eastern Beaverhead National Forest |
| Effective: | 2026-08-06 @ 2:35 pm -> 2026-08-06 @ 10:45 pm |
| Onset: | 2026-08-06 @ 2:35 pm -> 2026-08-06 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 2:35 pm |
| Headline: | Red Flag Warning issued August 6 at 1:35PM MDT until August 6 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD, EAST BEAVERHEAD, EAST LOLO, AND BITTERROOT... ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... ...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... .Increasingly, hot, dry, and breezy if not windy conditions are expected to continue and peak on Saturday August 8th. Poor overnight recoveries, with elevated temperatures and dry conditions, remain expected above valley floors and in higher terrain. The National Weather Service in Missoula MT has issued a Fire Weather Watch in effect from Friday afternoon through Saturday evening. * AFFECTED AREA...Fire Weather Zones 110 and 111. * TIMING...For the Red Flag Warning, until 9 PM MDT this evening. For the Fire Weather Watch, from Friday afternoon through Saturday evening. * WINDS...For the Red Flag Warning, northwest winds 10 to 15 mph with gusts up to 30 mph, and for the Fire Weather Watch, west winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...For the Red Flag Warning, Relative Humidity between 5 to 20 percent, and for the Fire Weather Watch, Relative Humidity between 5 to 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Fire Weather Watch |
| Area(s): | Eastern Lolo National Forest/Welcome Creek And Scapegoat Wildernesses; Bitterroot National Forest |
| Effective: | 2026-08-06 @ 2:35 pm -> 2026-08-06 @ 10:45 pm |
| Onset: | 2026-08-07 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 2:35 pm |
| Headline: | Fire Weather Watch issued August 6 at 1:35PM MDT until August 8 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD, EAST BEAVERHEAD, EAST LOLO, AND BITTERROOT... ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... ...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... .Increasingly, hot, dry, and breezy if not windy conditions are expected to continue and peak on Saturday August 8th. Poor overnight recoveries, with elevated temperatures and dry conditions, remain expected above valley floors and in higher terrain. The National Weather Service in Missoula MT has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 108 and 109. * TIMING...From Friday afternoon through Saturday evening. * WINDS...West winds 10 to 15 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 5 to 20 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Fire Weather Watch |
| Area(s): | Western Lolo National Forest; Salish and Kootenai Indian Reservation |
| Effective: | 2026-08-06 @ 2:35 pm -> 2026-08-06 @ 10:45 pm |
| Onset: | 2026-08-08 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 2:35 pm |
| Headline: | Fire Weather Watch issued August 6 at 1:35PM MDT until August 8 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD, EAST BEAVERHEAD, EAST LOLO, AND BITTERROOT... ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... ...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... .Increasingly, hot, dry, and breezy if not windy conditions are expected to continue and peak on Saturday August 8th. Poor overnight recoveries, with elevated temperatures and dry conditions, remain expected above valley floors and in higher terrain. The National Weather Service in Missoula MT has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 106 and 107. * TIMING...From Saturday afternoon through Saturday evening. * WINDS...West winds 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Relative Humidity between 5 to 20 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Fire Weather Watch |
| Area(s): | Deerlodge/Western Beaverhead National Forest; Eastern Beaverhead National Forest |
| Effective: | 2026-08-06 @ 2:35 pm -> 2026-08-06 @ 10:45 pm |
| Onset: | 2026-08-07 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 2:35 pm |
| Headline: | Fire Weather Watch issued August 6 at 1:35PM MDT until August 8 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD, EAST BEAVERHEAD, EAST LOLO, AND BITTERROOT... ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... ...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... .Increasingly, hot, dry, and breezy if not windy conditions are expected to continue and peak on Saturday August 8th. Poor overnight recoveries, with elevated temperatures and dry conditions, remain expected above valley floors and in higher terrain. The National Weather Service in Missoula MT has issued a Fire Weather Watch in effect from Friday afternoon through Saturday evening. * AFFECTED AREA...Fire Weather Zones 110 and 111. * TIMING...For the Red Flag Warning, until 9 PM MDT this evening. For the Fire Weather Watch, from Friday afternoon through Saturday evening. * WINDS...For the Red Flag Warning, northwest winds 10 to 15 mph with gusts up to 30 mph, and for the Fire Weather Watch, west winds 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...For the Red Flag Warning, Relative Humidity between 5 to 20 percent, and for the Fire Weather Watch, Relative Humidity between 5 to 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Fire Weather Watch |
| Area(s): | Lincoln Ranger District of the Helena National Forest; Central and Eastern Lewis and Clark National Forest Areas; Helena and Townsend Ranger Districts of the Helena National Forest |
| Effective: | 2026-08-06 @ 2:14 pm -> 2026-08-07 @ 7:30 am |
| Onset: | 2026-08-07 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-08-06 @ 2:14 pm |
| Headline: | Fire Weather Watch issued August 6 at 1:14PM MDT until August 8 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
The National Weather Service in Great Falls has issued a Fire Weather Watch for hot temperatures, gusty winds, and low relative humidity, which is in effect from Friday afternoon through Saturday evening. * AFFECTED AREA...Lincoln Ranger District of the Helena National Forest, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 8 percent. * TEMPERATURES...Up to 95 degrees. * IMPACTS...Any fires that develop will spread rapidly. Containment of any ongoing or new fires may be very difficult. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Dawson/McCone/Prairie/Richland/Wibaux Counties |
| Effective: | 2026-08-06 @ 1:53 pm -> 2026-08-06 @ 8:00 pm |
| Onset: | 2026-08-06 @ 1:53 pm -> 2026-08-06 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-08-06 @ 1:53 pm |
| Headline: | Red Flag Warning issued August 6 at 12:53PM MDT until August 6 at 7:00PM MDT by NWS Glasgow MT |
| Description: |
* WIND...Northwest at 15 to 25 mph with gusts to 35 mph. * HUMIDITY...As low as 10 percent. * THUNDERSTORMS...None * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge; Southern Petroleum and Southern Garfield Counties |
| Effective: | 2026-08-06 @ 1:53 pm -> 2026-08-06 @ 10:00 pm |
| Onset: | 2026-08-06 @ 1:53 pm -> 2026-08-06 @ 8:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-08-06 @ 1:53 pm |
| Headline: | Red Flag Warning issued August 6 at 12:53PM MDT until August 6 at 7:00PM MDT by NWS Glasgow MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 136 AND 137... The National Weather Service in Glasgow has issued a Fire Weather Watch, which is in effect from Saturday afternoon through Saturday evening. * WIND...Northwest at 15 to 25 mph with gusts to 35 mph. * HUMIDITY...As low as 10 percent. * THUNDERSTORMS...None * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Fire Weather Watch |
| Area(s): | The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge; Southern Petroleum and Southern Garfield Counties |
| Effective: | 2026-08-06 @ 1:53 pm -> 2026-08-06 @ 10:00 pm |
| Onset: | 2026-08-08 @ 1:00 pm -> 2026-08-08 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2026-08-06 @ 1:53 pm |
| Headline: | Fire Weather Watch issued August 6 at 12:53PM MDT until August 8 at 8:00PM MDT by NWS Glasgow MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 136 AND 137... The National Weather Service in Glasgow has issued a Fire Weather Watch, which is in effect from Saturday afternoon through Saturday evening. * WIND...Northwest at 15 to 25 mph with gusts to 35 mph. * HUMIDITY...As low as 10 percent. * THUNDERSTORMS...None * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Custer County; Sioux Ranger District Custer National Forest |
| Effective: | 2026-08-06 @ 1:32 pm -> 2026-08-06 @ 9:00 pm |
| Onset: | 2026-08-06 @ 1:32 pm -> 2026-08-06 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-08-06 @ 1:32 pm |
| Headline: | Red Flag Warning issued August 6 at 12:32PM MDT until August 6 at 8:00PM MDT by NWS Billings MT |
| Description: |
* IMPACTS: Low humidities, hot temperatures, gusty winds, and a wind shift with a cold front will create erratic fire behavior. * AFFECTED AREA: In Southeast MT Fire Zone...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Northwest SD...Harding. In Southeast MT...Carter...Custer...Fallon. * COLD FRONT: A cold front arriving early this afternoon will shift winds to the northwest and increase wind speeds this afternoon and early evening. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Up to 95 degrees. |
| Alert: | Fire Weather Watch |
| Area(s): | Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Sheridan County/Casper BLM; Bighorn National Forest |
| Effective: | 2026-08-06 @ 1:32 pm -> 2026-08-07 @ 1:45 pm |
| Onset: | 2026-08-08 @ 12:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-08-06 @ 1:32 pm |
| Headline: | Fire Weather Watch issued August 6 at 12:32PM MDT until August 8 at 9:00PM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has issued a Fire Weather Watch...which is in effect from Saturday morning through Saturday evening. * IMPACTS: Low humidities, hot temperatures, and strong gusty winds will create erratic fire behavior. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...125...126...127 128...129. In Southeast MT Fire Zones...130...131. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Powder River...Rosebud...Treasure. In Southwest MT...Gallatin. * WIND: Northwest 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: Minimums of 9 to 14 percent. * TEMPERATURES: Highs in the 90s to near 100 degrees. |
| Alert: | Air Quality Alert |
| Area(s): | Beaverhead, MT; Deer Lodge, MT; Flathead, MT; Granite, MT; Lake, MT; Lincoln, MT; Madison, MT; Mineral, MT; Missoula, MT; Ravalli, MT; Sanders, MT; Silver Bow, MT |
| Effective: | 2026-08-06 @ 8:15 am -> 2026-08-07 @ 10:00 am |
| Onset: | 2026-08-06 @ 8:15 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Great Falls MT on 2026-08-06 @ 8:34 am |
| Headline: | Air Quality Alert issued August 6 at 7:15AM 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, Lake, Lincoln, Madison, Mineral, Ravalli, Sanders, Silver Bow, and Missoula counties in effect until 9AM on 08/07/2026 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 08/06/2026, particulate levels in Frenchtown, Hamilton and Libby are Unhealthy for Sensitive Groups. As of 7AM on 08/06/2026, particulate levels in Billings, Butte, Columbia Falls, Cut Bank, Dillon, Great Falls, Helena, Lewistown, Missoula, Sleeping Giant and Thompson Falls are Moderate. 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 |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-08-06 @ 4:35 am -> 2026-08-06 @ 8:00 pm |
| Onset: | 2026-08-06 @ 10:00 am -> 2026-08-06 @ 8:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-08-06 @ 4:35 am |
| Headline: | Lake Wind Advisory issued August 6 at 3:35AM MDT until August 6 at 7:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Northwest winds 15 to 25 mph with gusts up to 35 mph expected. * WHERE...Fort Peck Lake. * WHEN...From 9 AM this morning to 7 PM MDT this evening. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Waves up to 4 feet are expected on Fort Peck Lake today. |