Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Severe Thunderstorm Warning
Area(s): Gallatin, MT; Madison, MT
Effective: 2026-07-25 @ 6:02 pm -> 2026-07-25 @ 6:45 pm
Onset: 2026-07-25 @ 6:02 pm -> 2026-07-25 @ 6:45 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Great Falls MT on 2026-07-25 @ 6:02 pm
Headline: Severe Thunderstorm Warning issued July 25 at 5:02PM MDT until July 25 at 5:45PM MDT by NWS Great Falls MT
Description: At 501 PM MDT, a severe thunderstorm was located near Belgrade, or 8
miles northwest of Bozeman, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Belgrade, Manhattan, Church Hill, Menard, Four Corners, and
Amsterdam.

Alert: Severe Thunderstorm Warning
Area(s): Garfield, MT
Effective: 2026-07-25 @ 5:57 pm -> 2026-07-25 @ 7:00 pm
Onset: 2026-07-25 @ 5:57 pm -> 2026-07-25 @ 7:00 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Glasgow MT on 2026-07-25 @ 5:57 pm
Headline: Severe Thunderstorm Warning issued July 25 at 4:57PM MDT until July 25 at 6:00PM MDT by NWS Glasgow MT
Description: SVRGGW

The National Weather Service in Glasgow has issued a

* Severe Thunderstorm Warning for...
Southwestern Garfield County in northeastern Montana...

* Until 600 PM MDT.

* At 457 PM MDT, a severe thunderstorm was located 9 miles north of
Mosby, or 25 miles east of Winnett, moving east at 35 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
Sand Springs, Edwards, Brusett, Devils Creek Rec Area, and Steve
Fork.

Alert: Special Weather Statement
Area(s): Missouri Headwaters; Madison River Valley; Beaverhead and Western Madison below 6000ft; Gallatin and Madison County Mountains and Centennial Mountains
Effective: 2026-07-25 @ 5:50 pm -> 2026-07-25 @ 6:45 pm
Onset: 2026-07-25 @ 5:50 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 5:50 pm
Headline: Special Weather Statement issued July 25 at 4:50PM MDT by NWS Great Falls MT
Description: At 450 PM MDT, Doppler radar was tracking a strong thunderstorm near
Alder, or 7 miles northwest of Virginia City, moving northeast at 25
mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

Locations impacted include...
Virginia City, Harrison, Norris, and Mcallister.

Alert: Special Weather Statement
Area(s): Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Little Belt and Highwood Mountains
Effective: 2026-07-25 @ 5:46 pm -> 2026-07-25 @ 6:30 pm
Onset: 2026-07-25 @ 5:46 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 5:46 pm
Headline: Special Weather Statement issued July 25 at 4:46PM MDT by NWS Great Falls MT
Description: At 446 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles west of Geyser, moving northeast at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

Locations impacted include...
Geraldine, Geyser, Raynesford, and Square Butte.

Alert: Special Weather Statement
Area(s): Big Belt, Bridger and Castle Mountains; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Gallatin and Madison County Mountains and Centennial Mountains
Effective: 2026-07-25 @ 5:29 pm -> 2026-07-25 @ 6:30 pm
Onset: 2026-07-25 @ 5:29 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 5:29 pm
Headline: Special Weather Statement issued July 25 at 4:29PM MDT by NWS Great Falls MT
Description: At 428 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles east of Harrison, or 23 miles west of Bozeman, moving northeast
at 35 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

Locations impacted include...
Three Forks, Manhattan, Toston, Logan, Maudlow, Amsterdam, Trident,
Church Hill, Menard, Madison Buffalo Jump State Park, and Missouri
Headwaters State Park.

Alert: Special Weather Statement
Area(s): Big Belt, Bridger and Castle Mountains; Meagher County Valleys
Effective: 2026-07-25 @ 5:29 pm -> 2026-07-25 @ 6:15 pm
Onset: 2026-07-25 @ 5:29 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 5:29 pm
Headline: Special Weather Statement issued July 25 at 4:29PM MDT by NWS Great Falls MT
Description: At 429 PM MDT, Doppler radar was tracking a strong thunderstorm 19
miles south of White Sulphur Springs, moving east at 25 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.

Locations impacted include...
Lennep and Ringling.

Alert: Severe Thunderstorm Watch
Area(s): Broadwater, MT; Fergus, MT; Gallatin, MT; Jefferson, MT; Judith Basin, MT; Madison, MT; Meagher, MT
Effective: 2026-07-25 @ 5:05 pm -> 2026-07-25 @ 11:00 pm
Onset: 2026-07-25 @ 5:05 pm -> 2026-07-25 @ 11:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2026-07-25 @ 5:05 pm
Headline: Severe Thunderstorm Watch issued July 25 at 4:05PM MDT until July 25 at 10:00PM MDT by NWS Great Falls MT
Description: SEVERE THUNDERSTORM WATCH 514 REMAINS VALID UNTIL 10 PM MDT THIS
EVENING FOR THE FOLLOWING AREAS

IN MONTANA THIS WATCH INCLUDES 7 COUNTIES

IN CENTRAL MONTANA

FERGUS JUDITH BASIN MEAGHER

IN SOUTHWEST MONTANA

BROADWATER GALLATIN JEFFERSON
MADISON

THIS INCLUDES THE CITIES OF BATTLE RIDGE PASS, BOULDER,
BOULDER HILL, BOZEMAN APT, BOZEMAN PASS, CITY OF BOZEMAN,
DEEP CREEK PASS, ELK PARK PASS, ENNIS, GRASS RANGE, HOBSON,
HOMESTAKE PASS, LEWISTOWN, LEWISTOWN DIVIDE, MARTINSDALE,
MONTANA CITY, NORRIS HILL, RAYNESFORD, RAYNOLDS PASS, STANFORD,
TARGHEE PASS, TOSTON, TOWNSEND, TWIN BRIDGES, VIRGINIA CITY,
WEST YELLOWSTONE, WHITE SULPHUR SPRINGS, WHITEHALL, WINIFRED,
AND WINSTON.

Alert: Severe Thunderstorm Watch
Area(s): Cascade, MT; Chouteau, MT
Effective: 2026-07-25 @ 5:05 pm -> 2026-07-25 @ 11:00 pm
Onset: 2026-07-25 @ 5:05 pm -> 2026-07-25 @ 11:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2026-07-25 @ 5:05 pm
Headline: Severe Thunderstorm Watch issued July 25 at 4:05PM MDT until July 25 at 10:00PM MDT by NWS Great Falls MT
Description: THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM
WATCH 514 TO INCLUDE THE FOLLOWING AREAS UNTIL 10 PM MDT THIS
EVENING

IN MONTANA THIS WATCH INCLUDES 2 COUNTIES

IN CENTRAL MONTANA

CASCADE

IN NORTH CENTRAL MONTANA

CHOUTEAU

THIS INCLUDES THE CITIES OF BELT, BIG SANDY, CARTER, CASCADE,
FORT BENTON, GREAT FALLS, AND KINGS HILL PASS.

Alert: Severe Thunderstorm Watch
Area(s): Garfield, MT; Petroleum, MT
Effective: 2026-07-25 @ 3:55 pm -> 2026-07-25 @ 11:00 pm
Onset: 2026-07-25 @ 3:55 pm -> 2026-07-25 @ 11:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Glasgow MT on 2026-07-25 @ 3:55 pm
Headline: Severe Thunderstorm Watch issued July 25 at 2:55PM MDT until July 25 at 10:00PM MDT by NWS Glasgow MT
Description: THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
514 IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING
AREAS

IN MONTANA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST MONTANA

GARFIELD PETROLEUM

THIS INCLUDES THE CITIES OF JORDAN AND WINNETT.

Alert: Severe Thunderstorm Watch
Area(s): Big Horn, MT; Carbon, MT; Golden Valley, MT; Musselshell, MT; Park, MT; Rosebud, MT; Stillwater, MT; Sweet Grass, MT; Treasure, MT; Wheatland, MT; Yellowstone, MT
Effective: 2026-07-25 @ 3:53 pm -> 2026-07-25 @ 11:00 pm
Onset: 2026-07-25 @ 3:53 pm -> 2026-07-25 @ 11:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Billings MT on 2026-07-25 @ 3:53 pm
Headline: Severe Thunderstorm Watch issued July 25 at 2:53PM MDT until July 25 at 10:00PM MDT by NWS Billings MT
Description: THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
514 IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING
AREAS

IN MONTANA THIS WATCH INCLUDES 11 COUNTIES

IN CENTRAL MONTANA

GOLDEN VALLEY MUSSELSHELL WHEATLAND

IN SOUTH CENTRAL MONTANA

BIG HORN CARBON PARK
STILLWATER SWEET GRASS YELLOWSTONE

IN SOUTHEAST MONTANA

ROSEBUD TREASURE

THIS INCLUDES THE CITIES OF ABSAROKEE, ASHLAND, BIG TIMBER,
BILLINGS, BRIDGER, COLSTRIP, COLUMBUS, CROW AGENCY, FORSYTH,
HARDIN, HARLOWTON, HYSHAM, JOLIET, LAME DEER, LAVINA, LIVINGSTON,
RED LODGE, ROUNDUP, AND RYEGATE.

Alert: Red Flag Warning
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; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest
Effective: 2026-07-25 @ 2:58 pm -> 2026-07-26 @ 1:00 am
Onset: 2026-07-25 @ 2:58 pm -> 2026-07-26 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-25 @ 2:58 pm
Headline: Red Flag Warning issued July 25 at 1:58PM MDT until July 26 at 12:00AM MDT by NWS Billings MT
Description: * IMPACTS: Low humidities, hot temperatures, and dry
thunderstorms with gusty and erratic outflow winds will create
erratic fire behavior and new fire starts.

* 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...132.
In Southeast MT and Northwest SD Fire Zone...133.

* COUNTIES AFFECTED:
In Central MT...Golden Valley...Musselshell...Wheatland.
In North Central WY...Big Horn...Johnson...Sheridan...Washakie.
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.
In Southwest MT...Gallatin.

* WIND: Southwest 5 to 10 mph with gusts up to 25 mph.

* THUNDERSTORMS: Isolated to scattered afternoon and evening
thunderstorms will produce gusty and erratic winds, and spotty
rainfall.

* HUMIDITY: As low as 12 percent.

* TEMPERATURES: Up to 106.

Alert: Red Flag Warning
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; Central and Eastern Lewis and Clark National Forest Areas
Effective: 2026-07-25 @ 2:33 pm -> 2026-07-25 @ 10:00 pm
Onset: 2026-07-25 @ 2:33 pm -> 2026-07-25 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 2:33 pm
Headline: Red Flag Warning issued July 25 at 1:33PM MDT until July 25 at 9:00PM MDT by NWS Great Falls MT
Description: * 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 and Central and Eastern Lewis and
Clark National Forest Areas.

* WINDS...Southwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 13 percent.

* TEMPERATURES...Up to 102.

* THUNDERSTORMS...Isolated to widely scattered showers and
thunderstorms may cause localized strong, and erratic wind gusts
and lightning, mostly over zones 115, 117 and 118 this
afternoon.

* IMPACTS...Containment of any ongoing or new fires may be very
difficult.

Alert: Heat Advisory
Area(s): Hill County; Northern Blaine County; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap
Effective: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 5:30 am
Onset: 2026-07-26 @ 1:00 am -> 2026-07-26 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 2:27 pm
Headline: Heat Advisory issued July 25 at 1:27PM MDT until July 26 at 9:00PM MDT by NWS Great Falls MT
Description: * WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures between 100 to 105 degrees, with overnight
temperatures only dropping to the mid to upper 60s. For the Heat
Advisory, high temperatures between 95 and 100 expected.

* WHERE...Cascade County below 5000ft, Hill County, Judith Basin
County and Judith Gap, Northern Blaine County, and Western and
Central Chouteau County.

* WHEN...For the Extreme Heat Warning, until midnight MDT tonight.
For the Heat Advisory, from midnight tonight to 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat. Hot temperatures may cause heat illnesses.

Alert: Heat Advisory
Area(s): Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty; Eastern Pondera and Eastern Teton; Gates of the Mountains; Helena Valley; Meagher County Valleys; Canyon Ferry Area; Missouri Headwaters; Madison River Valley; Gallatin Valley; Beaverhead and Western Madison below 6000ft
Effective: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 5:30 am
Onset: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 2:27 pm
Headline: Heat Advisory issued July 25 at 1:27PM MDT until July 26 at 9:00PM MDT by NWS Great Falls MT
Description: * WHAT...High temperatures up to 100 degrees expected.

* WHERE...Portions of central, north central, and southwest Montana.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

* ADDITIONAL DETAILS...The heat will peak on today. While
temperatures will not be quite as hot Sunday, highs will still be
in the mid to upper 90s.

Alert: Extreme Heat Warning
Area(s): Bears Paw Mountains and Southern Blaine; Fergus County below 4500ft
Effective: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 5:30 am
Onset: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 2:27 pm
Headline: Extreme Heat Warning issued July 25 at 1:27PM MDT until July 26 at 9:00PM MDT by NWS Great Falls MT
Description: * WHAT...Dangerously hot conditions. High temperatures between 100
and 107 degrees expected today, with overnight temperatures only
dropping to the mid to upper 60s. High temperatures between 95 and
100 expected Sunday.

* WHERE...Bears Paw Mountains and Southern Blaine and Fergus County
below 4500ft.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat.

Alert: Extreme Heat Warning
Area(s): Hill County; Northern Blaine County; Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap
Effective: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 5:30 am
Onset: 2026-07-25 @ 2:27 pm -> 2026-07-26 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-07-25 @ 2:27 pm
Headline: Extreme Heat Warning issued July 25 at 1:27PM MDT until July 26 at 12:00AM MDT by NWS Great Falls MT
Description: * WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures between 100 to 105 degrees, with overnight
temperatures only dropping to the mid to upper 60s. For the Heat
Advisory, high temperatures between 95 and 100 expected.

* WHERE...Cascade County below 5000ft, Hill County, Judith Basin
County and Judith Gap, Northern Blaine County, and Western and
Central Chouteau County.

* WHEN...For the Extreme Heat Warning, until midnight MDT tonight.
For the Heat Advisory, from midnight tonight to 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat. Hot temperatures may cause heat illnesses.

Alert: Extreme Heat Warning
Area(s): Northern Phillips; Northern Valley
Effective: 2026-07-25 @ 1:12 pm -> 2026-07-26 @ 5:15 am
Onset: 2026-07-25 @ 1:12 pm -> 2026-07-26 @ 11:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-07-25 @ 1:12 pm
Headline: Extreme Heat Warning issued July 25 at 12:12PM MDT until July 26 at 10:00PM MDT by NWS Glasgow MT
Description: * WHAT...Dangerously hot temperatures with highs in the mid 90s to
low 100s.

* WHERE...Northern Phillips and Northern Valley Counties.

* WHEN...Until 10 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...Overnight lows in the mid 60s to upper 60s
will offer little relief while sleeping.

Alert: Extreme Heat Warning
Area(s): Central and Southeast Phillips; Central and Southern Valley; Western Roosevelt; Petroleum; Garfield; McCone; Richland; Dawson; Prairie; Wibaux; Southwest Phillips; Eastern Roosevelt
Effective: 2026-07-25 @ 1:12 pm -> 2026-07-26 @ 5:15 am
Onset: 2026-07-25 @ 1:12 pm -> 2026-07-26 @ 11:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-07-25 @ 1:12 pm
Headline: Extreme Heat Warning issued July 25 at 12:12PM MDT until July 26 at 10:00PM MDT by NWS Glasgow MT
Description: * WHAT...Dangerously hot temperatures with highs in the mid 90s to
mid 100s.

* WHERE...Most of Northeast Montana.

* WHEN...Until 10 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...Overnight lows in the mid 60s to mid 70s will
offer little relief while sleeping.

Alert: Extreme Heat Warning
Area(s): Daniels; Sheridan
Effective: 2026-07-25 @ 1:12 pm -> 2026-07-26 @ 5:15 am
Onset: 2026-07-25 @ 1:12 pm -> 2026-07-26 @ 11:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-07-25 @ 1:12 pm
Headline: Extreme Heat Warning issued July 25 at 12:12PM MDT until July 26 at 10:00PM MDT by NWS Glasgow MT
Description: * WHAT...Dangerously hot temperatures with highs in the mid 90s to
around 100.

* WHERE...Daniels and Sheridan Counties.

* WHEN...Until 10 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...Overnight lows in the mid 60s to upper 60s
will offer little relief while sleeping.

Alert: Heat Advisory
Area(s): Northern Park; Judith Gap; Paradise Valley; Livingston Area; Northern Sweet Grass; Melville Foothills; Southern Wheatland
Effective: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 12:00 pm
Onset: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 10:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-25 @ 11:52 am
Headline: Heat Advisory issued July 25 at 10:52AM MDT until July 26 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...Hot conditions with high temperatures of 90 to 100. Today is
expected to be the hottest day.

* WHERE...Portions of central and south central Montana.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Hot daytime temperatures combined with warm
overnight low temperatures will produce cumulative heat stress.
This heat stress will become dangerous to anyone without adequate
cooling and hydration.

Alert: Extreme Heat Warning
Area(s): Red Lodge Foothills; Beartooth Foothills
Effective: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 12:00 pm
Onset: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-25 @ 11:52 am
Headline: Extreme Heat Warning issued July 25 at 10:52AM MDT until July 26 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...Hot conditions with high temperatures up to 100. Today is
expected to be the hottest day.

* WHERE...Beartooth Foothills and Red Lodge Foothills.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Hot daytime temperatures combined with warm
overnight low temperatures will produce cumulative heat stress.
This heat stress will become dangerous to anyone without adequate
cooling and hydration.

Alert: Extreme Heat Warning
Area(s): Musselshell; Treasure; Northern Rosebud; Custer; Fallon; Northern Stillwater; Powder River; Carter; Golden Valley; Northern Big Horn; Southern Rosebud; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Northeastern Yellowstone; Southwestern Yellowstone; Sheridan Foothills
Effective: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 12:00 pm
Onset: 2026-07-25 @ 11:52 am -> 2026-07-26 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-25 @ 11:52 am
Headline: Extreme Heat Warning issued July 25 at 10:52AM MDT until July 26 at 9:00PM MDT by NWS Billings MT
Description: * WHAT...Dangerously hot conditions with high temperatures of 100 to
108, hottest over eastern Montana. Today is expected to be the
hottest day.

* WHERE...Portions of central, south central, and southeast Montana
and north central Wyoming.

* WHEN...Until 9 PM MDT Sunday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Dangerously 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: Red Flag Warning
Area(s): 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: 2026-07-25 @ 5:31 am -> 2026-07-25 @ 11:00 pm
Onset: 2026-07-25 @ 5:00 pm -> 2026-07-25 @ 11:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-07-25 @ 5:31 am
Headline: Red Flag Warning issued July 25 at 4:31AM MDT until July 25 at 10:00PM MDT by NWS Glasgow MT
Description: The National Weather Service in Glasgow has cancelled the Red
Flag Warning.

The National Weather Service in Glasgow has issued a Red Flag
Warning, which is in effect from 4 PM to 10 PM MDT Saturday.

* WIND...South southwest winds this afternoon and evening will
range at 10 to 15 mph with gusts to 25 mph.

* HUMIDITY...As low as 13 percent this afternoon.

* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

* ADDITIONAL DETAILS...Isolated thunderstorms are expected on
Saturday, so lightning is the main concern for fire starts.

Alert: Red Flag Warning
Area(s): Eastern Beaverhead National Forest
Effective: 2026-07-24 @ 1:15 pm -> 2026-07-25 @ 10:00 pm
Onset: 2026-07-25 @ 2:00 pm -> 2026-07-25 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-07-24 @ 1:15 pm
Headline: Red Flag Warning issued July 24 at 12:15PM MDT until July 25 at 9:00PM MDT by NWS Missoula MT
Description: ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM MDT SATURDAY DUE TO
LIGHTNING AND WIND, LOW RELATIVE HUMIDITY FOR EAST BEAVERHEAD...

The National Weather Service in Missoula MT has issued a Red Flag
Warning.

* AFFECTED AREA...Fire Weather Zone 111.

* TIMING...From 1 PM to 9 PM MDT Saturday.

* WINDS...Southwest winds 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...Relative Humidity between 15 to 25 percent.

* THUNDERSTORMS...Isolated to scattered thunderstorms producing
minimal precipitation. Erratic outflow winds of 55 to 65 mph
possible.

* IMPACTS...Any fires that develop will spread rapidly. Outdoor
burning is not recommended.