Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Powder River |
| Effective: | 2026-07-29 @ 6:01 pm -> 2026-07-29 @ 6:45 pm |
| Onset: | 2026-07-29 @ 6:01 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-29 @ 6:01 pm |
| Headline: | Special Weather Statement issued July 29 at 5:01PM MDT by NWS Billings MT |
| Description: |
At 501 PM MDT, Doppler radar was tracking a strong thunderstorm 22 miles west of Broadus moving east at 15 mph. HAZARD...Wind gusts up to 50 mph and half inch size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Sonnette. |
| Alert: | Special Weather Statement |
| Area(s): | Madison River Valley; Beaverhead and Western Madison below 6000ft; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-07-29 @ 5:46 pm -> 2026-07-29 @ 6:30 pm |
| Onset: | 2026-07-29 @ 5:46 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-29 @ 5:46 pm |
| Headline: | Special Weather Statement issued July 29 at 4:46PM MDT by NWS Great Falls MT |
| Description: |
At 446 PM MDT, Doppler radar was tracking a strong thunderstorm 15 miles southwest of Virginia City, moving northeast at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Virginia City, Ennis, Alder, Jeffers, and Cameron. |
| Alert: | Special Weather Statement |
| Area(s): | Northern Stillwater; Northern Carbon; Southwestern Yellowstone |
| Effective: | 2026-07-29 @ 5:31 pm -> 2026-07-29 @ 6:15 pm |
| Onset: | 2026-07-29 @ 5:31 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-29 @ 5:31 pm |
| Headline: | Special Weather Statement issued July 29 at 4:31PM MDT by NWS Billings MT |
| Description: |
At 431 PM MDT, Doppler radar was tracking a shower 8 miles west of Laurel, or 15 miles east of Columbus, moving northeast at 25 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Billings, Laurel, Billings West End, Billings Heights, Park City and Acton. |
| Alert: | Fire Weather Watch |
| Area(s): | Eastern Glacier/Toole/Central/Eastern Pondera/Liberty; Hill and Blaine Counties; Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front; Chouteau and Fergus Counties; 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: | 2026-07-29 @ 11:46 am -> 2026-07-30 @ 3:00 am |
| Onset: | 2026-08-01 @ 3:00 pm -> 2026-08-02 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-29 @ 11:46 am |
| Headline: | Fire Weather Watch issued July 29 at 10:46AM MDT until August 2 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 Saturday afternoon through Sunday evening. * AFFECTED AREA...Eastern Glacier/Toole/Central/Eastern Pondera/Liberty, Hill and Blaine Counties, Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front, Chouteau and Fergus Counties, 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 15 to 25 mph with gusts up to 50 mph. Along the Rocky Mountain Front, west winds 20 to 35 mph with gusts up to 65 mph. * RELATIVE HUMIDITY...As low as 8 percent. * TEMPERATURES...Up to 105 on Saturday. * COLD FRONT...A strong, dry cold front will arrive Saturday evening. * 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: | Fire Weather Watch |
| Area(s): | Kootenai National Forest/Talley Lake District/fnf; Flathead National Forest/Glacier Park/Bob Marshall And Mission Mountain Wilderness; Western Lolo National Forest; Salish and Kootenai Indian Reservation; Eastern Lolo National Forest/Welcome Creek And Scapegoat Wildernesses; Bitterroot National Forest |
| Effective: | 2026-07-29 @ 9:45 am -> 2026-07-31 @ 1:15 pm |
| Onset: | 2026-08-01 @ 3:00 pm -> 2026-08-02 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-07-29 @ 9:45 am |
| Headline: | Fire Weather Watch issued July 29 at 8:45AM MDT until August 2 at 12:00AM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON AND CLEARWATER/NEZ PERCE... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR A PORTION OF MT... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... ... .A dry cold front on Saturday will bring critical fire weather conditions to the region. The National Weather Service in Missoula MT has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 104, 105, 106, 107, 108, and 109 in Northwest and west-central Montana. * TIMING...From Saturday afternoon through Saturday evening. * WINDS...West winds 10 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...Relative Humidity between 15 to 25 percent. * Winds remain elevated in Fire Weather Zone 105 into late Saturday night and early Sunday morning but relative humidities will recover into the 40 and 50% range above valley floors. * 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: | 2026-07-29 @ 9:45 am -> 2026-07-31 @ 1:15 pm |
| Onset: | 2026-08-01 @ 3:00 pm -> 2026-08-02 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-07-29 @ 9:45 am |
| Headline: | Fire Weather Watch issued July 29 at 8:45AM MDT until August 2 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON AND CLEARWATER/NEZ PERCE... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR A PORTION OF MT... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... ... .A dry cold front on Saturday will bring critical fire weather conditions to the region. The National Weather Service in Missoula MT has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 110 and 111 in southwest Montana. * TIMING...From Saturday afternoon through Sunday evening. * WINDS...West winds 15 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...Relative Humidity between 5 to 20 percent. * Late Saturday night into Sunday morning, winds decrease to 5-15 mph with gusts up to 25 mph especially in higher terrain. Relative humidities recover into the 40% range above valley floors. Wind speeds increase and relative humidities drop again to critical thresholds by Sunday afternoon. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Heat Advisory |
| Area(s): | Western Roosevelt; McCone; Richland; Dawson; Prairie; Wibaux; Eastern Roosevelt |
| Effective: | 2026-07-29 @ 1:33 am -> 2026-07-29 @ 5:00 pm |
| Onset: | 2026-07-29 @ 12:00 pm -> 2026-07-29 @ 8:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-29 @ 1:33 am |
| Headline: | Heat Advisory issued July 29 at 12:33AM MDT until July 29 at 7:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Highs up to 105 expected. * WHERE...Dawson, Roosevelt, McCone, Prairie, Richland, and Wibaux Counties. * WHEN...From 11 AM this morning to 7 PM MDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses. |