Yellowstone National Park, Wyoming
Regional Weather Alerts
| 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: | 2026-07-10 @ 5:42 pm -> 2026-07-10 @ 6:45 pm |
| Onset: | 2026-07-10 @ 5:42 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-10 @ 5:42 pm |
| Headline: | Special Weather Statement issued July 10 at 4:42PM MDT by NWS Great Falls MT |
| Description: |
At 441 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 19 miles northeast of Lima to 13 miles south of Virginia City. Movement was northeast at 15 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Virginia City, Ennis, Jeffers, Cameron, and Mcallister. |
| Alert: | Extreme Heat Warning |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Daniels; Sheridan; Western Roosevelt; Petroleum; Garfield; McCone; Richland; Dawson; Prairie; Wibaux; Northern Phillips; Southwest Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2026-07-10 @ 4:06 pm -> 2026-07-11 @ 4:15 am |
| Onset: | 2026-07-11 @ 7:00 am -> 2026-07-13 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-10 @ 4:06 pm |
| Headline: | Extreme Heat Warning issued July 10 at 3:06PM MDT until July 13 at 6:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Dangerously hot conditions with highs between 93 and 104 on Saturday and highs between 97 and 110 on Sunday expected. * WHERE...All of northeast Montana. * WHEN...From 6 AM Saturday to 6 AM MDT Monday. * IMPACTS...Heat related illnesses are part of the story during extreme heat and high humidity events like this. Make sure to limit time in the sun. * ADDITIONAL DETAILS...Temperatures will struggle to drop below 65 degrees at night, so make sure to have ways of keeping the air cool in apartments and homes. |
| Alert: | Extreme Heat Warning |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Northern Park; Golden Valley; Red Lodge Foothills; Northern Big Horn; Southern Rosebud; Judith Gap; Paradise Valley; Livingston Area; Beartooth Foothills; Southern Big Horn; Southeastern Carbon; Northern Sweet Grass; Bighorn Canyon; Northern Carbon; Melville Foothills; Northeastern Yellowstone; Southern Wheatland; Southwestern Yellowstone; Sheridan Foothills |
| Effective: | 2026-07-10 @ 2:01 pm -> 2026-07-11 @ 2:15 pm |
| Onset: | 2026-07-11 @ 7:00 am -> 2026-07-14 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-10 @ 2:01 pm |
| Headline: | Extreme Heat Warning issued July 10 at 1:01PM MDT until July 14 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with high temperatures of 100 to 115 expected, hottest Sunday. Some all time record highs are possible on Sunday. * WHERE...Portions of central, south central, and southeast Montana and north central Wyoming. * WHEN...From 6 AM Saturday to midnight MDT Monday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Extremely hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration. |
| Alert: | Heat Advisory |
| Area(s): | Eastern Toole and Liberty; Hill County; Northern Blaine County; Southern High Plains; Eastern Pondera and Eastern Teton; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Gates of the Mountains; Helena Valley; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley |
| Effective: | 2026-07-10 @ 1:35 pm -> 2026-07-11 @ 7:00 am |
| Onset: | 2026-07-11 @ 1:00 pm -> 2026-07-13 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-10 @ 1:35 pm |
| Headline: | Heat Advisory issued July 10 at 12:35PM MDT until July 13 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Hot daytime temperatures of 95 to 105 degrees, with overnight temperatures of 60 to 70 degrees expected. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...From noon Saturday to 9 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. |
| Alert: | Fire Weather Watch |
| Area(s): | Gallatin National Forest |
| Effective: | 2026-07-10 @ 12:09 pm -> 2026-07-11 @ 12:15 pm |
| Onset: | 2026-07-12 @ 9:00 am -> 2026-07-12 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-10 @ 12:09 pm |
| Headline: | Fire Weather Watch issued July 10 at 11:09AM MDT until July 12 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 Sunday morning through Sunday evening. * IMPACTS: Low humidities, hot temperatures, strong gusty winds, and wind shift with a cold front late may create erratic fire behavior. * AFFECTED AREA: In South Central MT Fire Zone...123. * COUNTIES AFFECTED: In South Central MT...Park...Sweet Grass. In Southwest MT...Gallatin. * WIND: South 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: Up to 105. * COLD FRONT: |
| Alert: | Fire Weather Watch |
| Area(s): | 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; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM |
| Effective: | 2026-07-10 @ 12:09 pm -> 2026-07-11 @ 12:15 pm |
| Onset: | 2026-07-12 @ 9:00 am -> 2026-07-12 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-10 @ 12:09 pm |
| Headline: | Fire Weather Watch issued July 10 at 11:09AM MDT until July 12 at 9:00PM MDT by NWS Billings MT |
| Description: |
* IMPACTS: Low humidities, very hot temperatures, strong gusty winds may create erratic fire behavior. * AFFECTED AREA: In North Central WY Fire Zone...274. In South Central MT Fire Zones...124...125...126...127...128 129. In Southeast MT Fire Zones...130...131...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Sheridan. In Northwest SD...Harding. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Carter...Custer...Fallon...Powder River Rosebud...Treasure. * WIND: South 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 7 percent. * TEMPERATURES: Up to 112. |
| Alert: | Fire Weather Watch |
| Area(s): | Deerlodge/Western Beaverhead National Forest; Eastern Beaverhead National Forest |
| Effective: | 2026-07-10 @ 11:34 am -> 2026-07-10 @ 7:45 pm |
| Onset: | 2026-07-12 @ 1:00 pm -> 2026-07-12 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-07-10 @ 11:34 am |
| Headline: | Fire Weather Watch issued July 10 at 10:34AM MDT until July 12 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST BEAVERHEAD AND EAST BEAVERHEAD... The National Weather Service in Missoula MT has issued a Fire Weather Watch. * AFFECTED AREA...Fire Weather Zones 110 and 111. * TIMING...From Sunday afternoon through Sunday evening. * WINDS...Southwest winds 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...Relative Humidity between 8 to 15 percent in the lower elevations of Zone 111 (East Beaverhead); 10 to 15 percent for Zone 110 (Deerlodge/West Beaverhead) * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |