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Winter Storm Warning


URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1254 PM MDT Sat Jun 21 2025

MTZ301-221200-
/O.CON.KTFX.WS.W.0014.000000T0000Z-250622T1800Z/
East Glacier Park Region-
Including the following locations: East Glacier Park, Kiowa,
Logan Pass, Babb, Marias Pass, and Saint Mary
1254 PM MDT Sat Jun 21 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT SUNDAY...

* WHAT...Heavy, wet snow. Total snow accumulations up to 6 inches
  below 6000 feet, with 12 to 18 inches above 6000 feet. Isolated
  higher amounts. Winds could gust as high as 50 mph.

* WHERE...East Glacier Park Region Zone.

* WHEN...Until noon MDT Sunday.

* IMPACTS...Travel could be difficult at times. The combination of
  heavy, wet snow accumulating on trees and power lines along with
  the gusty winds may lead to power outages and downed trees. Those
  in the backcountry should be prepared for wet and raw condtions.

* ADDITIONAL DETAILS...Snowfall rates of 1 to 2 inches per hour will
  be possible at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1217 PM MDT Fri Jun 20 2025

MTZ002-221800-
/O.EXT.KMSO.WS.W.0008.250621T0800Z-250622T1800Z/
West Glacier Region-
1217 PM MDT Fri Jun 20 2025

...WINTER STORM WARNING NOW IN EFFECT FROM 2 AM SATURDAY TO NOON MDT
SUNDAY ABOVE 5000 FEET...

* WHAT...Heavy wet snow expected above 5000 feet. Likelihood of
  extreme impacts from 5 to 12 inches of snow is greater than 90
  percent above 6000 feet, and up to a 30 percent chance of isolated
  impacts from around 2 feet of snow in the highest terrain. Wind
  gusts up to 40 mph in exposed areas.

* WHERE...Marias Pass and Glacier National Park higher elevations
  including Going-to-the-Sun Road and Logan Pass.

* WHEN...From 2 AM Saturday to noon MDT Sunday.

* IMPACTS...For MAJOR impacts from snow, expect considerable
  disruptions to normal activities. Dangerous or impossible
  conditions. Avoid travel in the impacted areas if possible.
  Widespread closures and disruptions to infrastructure may occur.
  For EXTREME impacts from snow, expect substantial disruptions to
  normal activities. Extremely dangerous or impossible conditions.
  Travel in the impacted areas is not advised. Extensive and
  widespread closures and disruptions to infrastructure may occur.
  Life saving actions may be needed. Increased risk of hypothermia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

&&

$$


High Wind Warning


URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
1242 PM MDT Sat Jun 21 2025

MTZ303-304-220900-
/O.CON.KTFX.HW.W.0019.000000T0000Z-250622T0900Z/
Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole
and Liberty-
Including the following locations: Lothair, Shelby, Devon,
Joplin, Chester, Cut Bank, Galata, Whitlash, Santa Rita, and
Ethridge
1242 PM MDT Sat Jun 21 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 AM MDT SUNDAY...

* WHAT...West winds 35 to 45 mph, with gusts up to 60 mph expected.

* WHERE...Eastern Glacier, Western Toole, and Central Pondera
  Counties, and Eastern Toole and Liberty Counties.

* WHEN...Until 3 AM MDT Sunday.

* IMPACTS...High winds may move loose debris, damage property and
  cause power outages. Travel could be difficult, especially for
  high profile vehicles or those pulling trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown around
or damaged by the wind.

&&

$$

Moldan


Freeze Warning


URGENT - WEATHER MESSAGE
National Weather Service Riverton WY
1251 PM MDT Sat Jun 21 2025

WYZ013-023-025>027-222200-
/O.NEW.KRIW.FZ.W.0001.250623T0600Z-250623T1400Z/
Jackson Hole-Star Valley-Upper Green River Basin Foothills-Upper
Green River Basin-South Lincoln County-
Including the cities of La Barge, Cokeville, Big Piney, Star
Valley Ranch, Alpine, Kemmerer, Jackson, Afton, Farson, Thayne,
and Pinedale
1251 PM MDT Sat Jun 21 2025

...FREEZE WARNING IN EFFECT FROM MIDNIGHT SUNDAY NIGHT TO 8 AM MDT
MONDAY...

* WHAT...Low temperatures 26 to 30, with readings as low as 23
  around Bondurant.

* WHERE...Jackson Hole, South Lincoln County, Star Valley, Upper
  Green River Basin, and Upper Green River Basin Foothills.

* WHEN...From midnight Sunday Night to 8 AM MDT Monday.

* IMPACTS...Freeze conditions could damage sensitive vegetation and
  possibly unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps to protect tender plants from the cold.

&&

$$

For more information from the National Weather Service, visit
https://weather.gov/riw/ .

CNJ


Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
145 PM MDT Sat Jun 21 2025

IDZ066-067-221130-
/O.CON.KPIH.WW.Y.0017.250622T0600Z-250623T0000Z/
Centennial Mountains - Island Park-Beaverhead - Lemhi Highlands-
Including the cities of Island Park, Edie School, Spencer,
Dubois, Small, and Kilgore
145 PM MDT Sat Jun 21 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM MDT SUNDAY ABOVE 7500 FEET ELEVATION...

* WHAT...Snow expected to accumulate above 7500 feet elevation.
  Total snow accumulations up to 7 inches.

* WHERE...Beaverhead - Lemhi Highlands and Centennial Mountains -
  Island Park.

* WHEN...From midnight tonight to 6 PM MDT Sunday.

* IMPACTS...Travel could be difficult, especially in the
  backcountry. Those recreating in the higher elevations should be
  prepared for winter weather conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.

&&

$$

Visit weather.gov/pocatello for more information.

Messick

URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
145 PM MDT Sat Jun 21 2025

IDZ069>074-221130-
/O.CON.KPIH.WW.Y.0017.000000T0000Z-250623T0000Z/
Lost River Range-Challis/Pahsimeroi Valleys-Frank Church
Wilderness-Sawtooth/Stanley Basin-Sun Valley Region-Big Lost
Highlands/Copper Basin-
Including the cities of Borah Peak, Sun Valley, Stanley, Galena,
Challis, Clayton, Copper Basin, and Ketchum
145 PM MDT Sat Jun 21 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY
ABOVE 7500 FEET ELEVATION...

* WHAT...Snow expected to accumulate above 7500 feet elevation.
  Additional snow accumulations up to 8 inches.

* WHERE...Big Lost Highlands/Copper Basin, Challis/Pahsimeroi
  Valleys, Frank Church Wilderness, Lost River Range,
  Sawtooth/Stanley Basin, and Sun Valley Region.

* WHEN...Until 6 PM MDT Sunday.

* IMPACTS...Travel could be difficult, especially in the
  backcountry. Those recreating in the higher elevations should be
  prepared for winter weather conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1254 PM MDT Sat Jun 21 2025

MTZ307-317-320-322-327-329-330-221200-
/O.CON.KTFX.WW.Y.0041.250622T0000Z-250622T1800Z/
Southern Rocky Mountain Front-Little Belt and Highwood Mountains-
Big Belt, Bridger and Castle Mountains-Elkhorn and Boulder
Mountains-Northwest Beaverhead County-Ruby Mountains and Southern
Beaverhead Mountains-Gallatin and Madison County Mountains and
Centennial Mountains-
Including the following locations: Deep Creek Pass, Raynolds
Pass, Kings Hill Pass, Montana City, Monida Pass, Wickes,
Homestake Pass, Neihart, Rogers Pass, Wise River, Maudlow, West
Yellowstone, Monarch, Targhee Pass, Big Sky, Bozeman Pass,
Trident, Wisdom, Boulder, Battle Ridge Pass, Clancy, Corbin, Big
Hole Pass, Chief Joseph Pass, Dewey, and Elk Park Pass
1254 PM MDT Sat Jun 21 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO NOON MDT SUNDAY...

* WHAT...Snow expected. Total snow accumulations up to 7 inches.

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

* WHEN...From 6 PM this evening to noon MDT Sunday.

* IMPACTS...Plan on slippery road conditions, especially on
  secondary roads in the mountains. Those in the backcountry should
  be prepared for wet and raw condtions. The heavy wet snow could
  bring down some trees and power lines.

* ADDITIONAL DETAILS...Snow levels could be as low as 5000 feet at
  times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.

&&

$$

Moldan

URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
1252 PM MDT Sat Jun 21 2025

MTZ067-221900-
/O.CON.KBYZ.WW.Y.0032.250622T0000Z-250623T0000Z/
Absaroka/Beartooth Mountains-
1252 PM MDT Sat Jun 21 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM MDT SUNDAY FOR THE BEARTOOTH HIGHWAY...

* WHAT...Wet snow expected for the Beartooth Highway. Total snow
  accumulations 3 to 6 inches. Winds gusting as high as 40 mph.

* WHERE...Absaroka/Beartooth Mountains including the Beartooth Pass

* WHEN...From 6 PM this evening to 6 PM MDT Sunday.

* IMPACTS...Roadways will likely become slick, slushy and hazardous.
  Visibility may be limited in falling wet snow.

* ADDITIONAL DETAILS...Anyone planning activities in the Beartooth
  Mountains should be prepared for winter like weather conditions,
  especially above 8000 ft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. For the latest road
conditions, call 5 1 1.

&&

$$

Additional graphics for this hazard can be found at
http://www.weather.gov/billings

wmr

URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1217 PM MDT Fri Jun 20 2025

IDZ006-009-010-MTZ006-007-043-221800-
/O.NEW.KMSO.WW.Y.0035.250621T0800Z-250622T1800Z/
Southern Clearwater Mountains-Western Lemhi County-Eastern Lemhi
County-Bitterroot/Sapphire Mountains-Butte/Blackfoot Region-
Potomac/Seeley Lake Region-
1217 PM MDT Fri Jun 20 2025 /1117 AM PDT Fri Jun 20 2025/

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM MDT /1 AM PDT/
SATURDAY TO NOON MDT /11 AM PDT/ SUNDAY ABOVE 6,000 FEET...

* WHAT...Snow expected Above 6,000 feet. Likelihood of minor impacts
  from snow is greater than 60 percent. Total snow accumulations up
  to 4 inches. Wind gusts around 30 mph in exposed areas.

* WHERE...In IDAHO, Eastern Lemhi County, Southern Clearwater
  Mountains, and Western Lemhi County. In MONTANA,
  Bitterroot/Sapphire Mountains, Butte/Blackfoot Region, and
  Potomac/Seeley Lake Region.

* WHEN...From 2 AM MDT /1 AM PDT/ Saturday to noon MDT /11 AM PDT/
  Sunday.

* IMPACTS...For MODERATE impacts from snow, expect disruptions to
  normal activities. Hazardous traveling conditions. Use extra
  caution while driving. Closures and disruptions to infrastructure
  may occur. For MINOR impacts from snow, expect a few
  inconveniences to normal activities. Use caution while driving.
  Increased risk of hypothermia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$


Heat Advisory


URGENT - WEATHER MESSAGE
National Weather Service Aberdeen SD
208 PM CDT Sat Jun 21 2025

SDZ017-036-037-048-051-220200-
/O.CON.KABR.HT.Y.0002.000000T0000Z-250622T0200Z/
Faulk-Hyde-Hand-Lyman-Buffalo-
Including the cities of Faulkton, Kennebec, Fort Thompson,
Miller, and Highmore
208 PM CDT Sat Jun 21 2025

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

* WHAT...Heat index values up to 102.

* WHERE...Buffalo, Hand, Hyde, Lyman, and Faulk Counties.

* WHEN...Until 9 PM CDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$

TMT


Special Weather Statement


Special Weather Statement
National Weather Service Great Falls MT
308 PM MDT Sat Jun 21 2025

MTZ324>326-328-220115-
Missouri Headwaters-Madison River Valley-Gallatin Valley-
Beaverhead and Western Madison below 6000ft-
Including the cities of Harrison, Three Forks, Willow Creek,
Pony, Whitehall, Cameron, Ennis, Jeffers, McAllister, Norris,
Bozeman, Gallatin Gateway, Bannack, Dillon, Glen, and Waterloo
308 PM MDT Sat Jun 21 2025

...A brief period of wet snow over the southwest Montana valleys
late tonight into Sunday morning...

A cold low pressure system may briefly drop snow levels down to
the valley floors of Southwest Montana late tonight into Sunday
morning. Areas along and south of interstate 90 will be most
susceptible to lower elevation snow between 4 and 9 am MDT.

Snowfall accumulations will generally be negligible due to warm
surface temperatures; however, areas above 5,000 feet of elevation
may receive localized snowfall amounts up to a couple inches over
grassy surfaces during the heaviest bands of precipitation,
especially in the Ennis and Dillon areas. There may also be brief
periods of visibility reductions down to a mile or less. Those
with travel plans over Southwest Montana should be prepared for
highly variable visibility and road conditions.

$$


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Bismarck ND
638 PM CDT Sat Jun 21 2025

NDZ001>005-009>013-017>022-031>034-040>044-222345-
Divide-Burke-Renville-Bottineau-Rolette-Williams-Mountrail-Ward-
McHenry-Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-
Golden Valley-Billings-Stark-Morton-Slope-Hettinger-Grant-Bowman-
Adams-
638 PM CDT Sat Jun 21 2025 /538 PM MDT Sat Jun 21 2025/

This Hazardous Weather Outlook is for portions of north central
North Dakota, northwest North Dakota, south central North Dakota,
and southwest North Dakota.

.DAY ONE...Tonight

Isolated severe thunderstorms are possible through tonight. Large
hail to the size of quarters and wind gusts to 60 mph will be the
main threats.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Isolated strong to severe thunderstorms are also possible on
Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report hail of any size and strong or
damaging wind gusts.

$$

Hazardous Weather Outlook...UPDATED
National Weather Service Aberdeen SD
238 PM CDT Sat Jun 21 2025

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-221945-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant-
Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
238 PM CDT Sat Jun 21 2025 /138 PM MDT Sat Jun 21 2025/

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.

.DAY ONE...This afternoon and tonight.

The combination of hot temperatures and high humidity values will
lead to heat indices this afternoon from the upper 90s to low 100s.
A Heat Advisory remains in effect from portions of south central
South Dakota into northeast South Dakota and west central Minnesota.

There`s a Marginal risk (level 1 of 5) for severe storms across
northeast South Dakota and west central Minnesota tonight. Storm
development is highly conditional as there remains a strong
atmospheric cap in place. If any storms were to develop, hail around
quarter size will be the main threat.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

A Marginal (central SD) to Slight risk (eastern SD/western MN) for
severe storms will be possible on Sunday with large hail, damaging
winds and a tornado or two all possible.

A Heat Advisory has been issued for northeast South Dakota and west
central Minnesota on Sunday, with heat indices from the upper 90s to
low 100s.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested on Sunday. Weather spotters are
encouraged to submit reports to the National Weather Service in
Aberdeen. The public can submit reports on our web page, Facebook
page, or our X feed.

$$
TMT

Hazardous Weather Outlook
National Weather Service Riverton WY
1254 PM MDT Sat Jun 21 2025

WYZ001>020-022>030-221300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
1254 PM MDT Sat Jun 21 2025

...Freeze Warning Sunday Night for the Far West Valleys and Basins...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...This Afternoon and Tonight.

Elevated fire weather concerns across southern and central Wyoming
this afternoon. Wind gusts of 30 to 40 mph, low humidity levels, and
very warm temperatures continue.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...Light snow is expected for the higher elevations of mainly
northwest Wyoming, including Yellowstone National Park and the Teton
Range. A dusting of snow is possible by early Sunday morning across
the travel corridors of Yellowstone.

Sunday Night...Overnight lows fall into the mid to upper 20s in the
valleys and basins of Teton, Lincoln, and Sublette Counties.

Tuesday and Wednesday...A chance of afternoon and evening
thunderstorms along and east of the Continental Divide.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
408 AM MDT Sat Jun 21 2025

SDZ001-002-221300-
Harding-Northern Perkins-
408 AM MDT Sat Jun 21 2025

This Hazardous Weather Outlook is for portions of northwestern
South Dakota.

.DAY ONE...Today and Tonight

There is a marginal risk (level 1 of 5) of severe thunderstorms
tonight, meaning that isolated severe storms are possible.
Primary hazards include large hail and damaging winds.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

There is a marginal risk (level 1 of 5) of severe thunderstorms
late Sunday afternoon and evening, meaning that isolated severe
storms are possible. Primary hazards include large hail and
damaging winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
408 AM MDT Sat Jun 21 2025

SDZ012>014-024>032-041>044-072>078-WYZ054>060-221300-
Butte-Northern Meade Co Plains-Ziebach-Northern Black Hills-
Northern Foothills-Rapid City-Southern Foothills-
Central Black Hills-Southern Black Hills-Custer Co Plains-
Pennington Co Plains-Haakon-Western Fall River-
Northern Oglala Lakota-Northern Jackson-Bennett-
Sturgis/Piedmont Foothills-Southern Meade Co Plains-
Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota-
Southern Jackson-Southern Perkins-Northern Campbell-
Southern Campbell-Western Crook-Wyoming Black Hills-
Weston County Plains-Newcastle-Northeastern Crook-
408 AM MDT Sat Jun 21 2025

This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.

.DAY ONE...Today and Tonight

Isolated to scattered thunderstorms may occur tonight, mainly
across northeastern Wyoming and northwestern South Dakota. Some
storms may contain hail and gusty winds.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

There is a marginal risk (level 1 of 5) of severe thunderstorms
late Sunday afternoon and evening, meaning that isolated severe
storms are possible. Primary hazards include large hail and
damaging winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE