Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Flood Watch
Area(s): East Glacier Park Region
Effective: 2026-06-28 @ 2:11 pm -> 2026-06-29 @ 7:00 am
Onset: 2026-06-28 @ 4:00 pm -> 2026-06-30 @ 1:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2026-06-28 @ 2:11 pm
Headline: Flood Watch issued June 28 at 1:11PM MDT until June 30 at 12:00AM MDT by NWS Great Falls MT
Description: * WHAT...Flooding caused by rain and snowmelt continues to be
possible.

* WHERE...A portion of north central Montana, including the following
area, East Glacier Park Region, including the east side of Glacier
National Park.

* WHEN...Through Monday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- Heavy rainfall is expected over the Northern Rockies, including
the east side of Glacier Park from today into Monday. Rainfall
amounts of 2 to 4 inches are possible by Monday. Additionally,
high elevation snowpack could be washed out, adding to additional
runoff.
- http://www.weather.gov/safety/flood

Alert: Lake Wind Advisory
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
Effective: 2026-06-28 @ 1:48 pm -> 2026-06-29 @ 3:00 am
Onset: 2026-06-28 @ 1:48 pm -> 2026-06-29 @ 3:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-28 @ 1:48 pm
Headline: Lake Wind Advisory issued June 28 at 12:48PM MDT until June 29 at 2:00AM MDT by NWS Glasgow MT
Description: * WHAT...Southwest winds 15 to 25 mph with gusts up to 35 mph.

* WHERE...Fort Peck Lake.

* WHEN...Until 2 AM MDT Monday.

* IMPACTS...Strong winds and rough waves on area lakes will create
hazardous conditions for small craft.

Alert: Winter Weather Advisory
Area(s): Elkhorn and Boulder Mountains; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains
Effective: 2026-06-28 @ 1:44 pm -> 2026-06-29 @ 7:00 am
Onset: 2026-06-28 @ 1:44 pm -> 2026-06-29 @ 1:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-28 @ 1:44 pm
Headline: Winter Weather Advisory issued June 28 at 12:44PM MDT until June 29 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Wet snow. Additional snow accumulations up to 2 inches near
pass level, with amounts in excess of 6 inches above pass level.

* WHERE...Elkhorn and Boulder Mountains, Gallatin and Madison County
Mountains and Centennial Mountains, and Ruby Mountains and Southern
Beaverhead Mountains.

* WHEN...Until noon MDT Monday.

* IMPACTS...Plan on cold and wet backcountry conditions with a
heightened hypothermia risk for those not properly dressed. Wet
snow may down trees and block access to forest roadways.

* ADDITIONAL DETAILS...Campers should be aware that it only takes a
few inches of snow to damage tents and other recreational items.

Alert: Winter Storm Warning
Area(s): Northwest Beaverhead County
Effective: 2026-06-28 @ 1:44 pm -> 2026-06-29 @ 7:00 am
Onset: 2026-06-28 @ 1:44 pm -> 2026-06-29 @ 1:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-28 @ 1:44 pm
Headline: Winter Storm Warning issued June 28 at 12:44PM MDT until June 29 at 12:00PM MDT by NWS Great Falls MT
Description: * WHAT...Heavy wet snow. Additional snow accumulations up to 3 inches
near pass level, with additional amounts in excess of 6 inches
above pass level.

* WHERE...Northwest Beaverhead County.

* WHEN...Until noon MDT Monday.

* IMPACTS...Plan on cold and wet backcountry conditions with a
heightened hypothermia risk for those not properly dressed. Wet
snow may down trees and block access to forest roadways.

* ADDITIONAL DETAILS...Campers should be aware that it only takes a
few inches of snow to damage tents and other recreational items.

Alert: Flood Advisory
Area(s): Garfield, MT
Effective: 2026-06-28 @ 12:42 pm -> 2026-06-28 @ 9:00 pm
Onset: 2026-06-28 @ 12:42 pm -> 2026-06-28 @ 9:00 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-28 @ 12:42 pm
Headline: Flood Advisory issued June 28 at 11:42AM MDT until June 28 at 8:00PM MDT by NWS Glasgow MT
Description: * WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...South Central Garfield County in northeastern Montana...

* WHEN...Until 800 PM MDT Sunday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
- At 1137 AM MDT, Emergency management reported heavy rain in
Jordan due to thunderstorms last night. Minor flooding continues.
- Jordan is the most likely place to experience minor flooding.
Additional rainfall amounts of 0.1 to 0.2 inches are expected
over the area through this afternoon. This additional rain may
result in minor flooding.
- Some locations that will experience flooding include...
Jordan.
- http://www.weather.gov/safety/flood

Alert: Flood Watch
Area(s): West Glacier Region; Flathead/Mission Valleys; Potomac/Seeley Lake Region
Effective: 2026-06-28 @ 12:14 pm -> 2026-06-29 @ 4:00 am
Onset: 2026-06-28 @ 4:00 pm -> 2026-06-29 @ 4:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Missoula MT on 2026-06-28 @ 12:14 pm
Headline: Flood Watch issued June 28 at 11:14AM MDT until June 29 at 3:00AM MDT by NWS Missoula MT
Description: * WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of northwest and west central Montana, including
the following areas, in northwest Montana, foothills and higher
terrain from the West Glacier Region to Mission Mountains.

* WHEN...From 3 PM MDT this afternoon through late tonight.

* IMPACTS...Excessive runoff may result in flooding of creeks,
streams, and other low-lying and flood-prone locations. Creeks and
streams may rise out of their banks. High country mudslides are
possible, especially near steep terrain which could endanger
hikers. The upper portions of the Going-To-The-Sun Road is
vulnerable to rockfall or debris flow.

* ADDITIONAL DETAILS...
- Anomalous subtropical moisture combined with a slow-moving
weather front will trigger moderate to heavy rainfall rates over
the region by late Sunday afternoon into the evening hours. High
resolution weather models depict rain-rates exceeding 0.30 to
0.50 inches per hour in the mountains. With a lot of people
recreating and camping in the region, this could become very
dangerous very quickly.

- Https://www.weather.gov/mso/hydrology

Alert: High Wind Warning
Area(s): Eastern Toole and Liberty
Effective: 2026-06-28 @ 11:31 am -> 2026-06-29 @ 1:00 am
Onset: 2026-06-28 @ 1:00 pm -> 2026-06-29 @ 1:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-28 @ 11:31 am
Headline: High Wind Warning issued June 28 at 10:31AM MDT until June 29 at 12:00AM MDT by NWS Great Falls MT
Description: * WHAT...West winds 25 to 35 mph with gusts up to 60 mph expected.

* WHERE...Eastern Toole and Liberty.

* WHEN...Until midnight MDT tonight.

* IMPACTS...Travel will be difficult, especially for high profile
vehicles.

* ADDITIONAL DETAILS...Leafed out trees may see higher impacts
compared to a similar event in the winter.

Alert: High Wind Warning
Area(s): Hill County; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine
Effective: 2026-06-28 @ 11:31 am -> 2026-06-29 @ 4:00 am
Onset: 2026-06-28 @ 4:00 pm -> 2026-06-29 @ 4:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-28 @ 11:31 am
Headline: High Wind Warning issued June 28 at 10:31AM MDT until June 29 at 3:00AM MDT by NWS Great Falls MT
Description: * WHAT...West to southwest winds 25 to 35 mph with gusts up to 60 mph
expected.

* WHERE...Bears Paw Mountains and Southern Blaine, Hill County, and
Western and Central Chouteau County.

* WHEN...From 3 PM this afternoon to 3 AM MDT Monday.

* IMPACTS...Travel will be difficult, especially for high profile
vehicles.

* ADDITIONAL DETAILS...Leafed out trees may see higher impacts
compared to a similar event in the winter.

Alert: Flood Advisory
Area(s): Daniels, MT
Effective: 2026-06-28 @ 8:46 am -> 2026-06-28 @ 7:00 pm
Onset: 2026-06-28 @ 8:46 am -> 2026-06-28 @ 7:00 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-28 @ 8:46 am
Headline: Flood Advisory issued June 28 at 7:46AM MDT until June 28 at 6:00PM MDT by NWS Glasgow MT
Description: * WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Daniels County in northeastern Montana...

* WHEN...Until 600 PM MDT Sunday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Some low-water crossings may become
impassable.

* ADDITIONAL DETAILS...
- At 746 AM MDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area.
- Additional rainfall amounts of 0.5 to 2 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Scobey, Flaxville, Peerless, Port Of Scobey, Madoc, Whitetail,
Port Of Whitetail, Four Buttes and West Fork.
- http://www.weather.gov/safety/flood

Alert: Flood Advisory
Area(s): Phillips, MT; Valley, MT
Effective: 2026-06-28 @ 8:33 am -> 2026-06-28 @ 3:00 pm
Onset: 2026-06-28 @ 8:33 am -> 2026-06-28 @ 3:00 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-28 @ 8:33 am
Headline: Flood Advisory issued June 28 at 7:33AM MDT until June 28 at 2:00PM MDT by NWS Glasgow MT
Description: * WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Phillips County in northeastern Montana...
Northwestern Valley County in northeastern Montana...

* WHEN...Until 200 PM MDT Sunday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...
- At 733 AM MDT, Doppler radar indicated heavy rain due to showers
and isolated thunderstorms. Minor flooding is ongoing or expected
to begin shortly in the advisory area.
- Additional rainfall amounts of 0.5 to 1.5 inches are expected
over the area today. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
Malta, Whitewater, Zortman, Saco, Dodson, Loring, Port Of Morgan,
Hinsdale, Phillips, Bowdoin, Sleeping Buffalo, Wagner, Frenchman
Reservoir, Chapman, Thoeny and Landusky.
- http://www.weather.gov/safety/flood

Alert: Lake Wind Advisory
Area(s): Flathead/Mission Valleys
Effective: 2026-06-28 @ 8:29 am -> 2026-06-29 @ 4:00 am
Onset: 2026-06-28 @ 1:00 pm -> 2026-06-29 @ 4:00 am
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-06-28 @ 8:29 am
Headline: Lake Wind Advisory issued June 28 at 7:29AM MDT until June 29 at 3:00AM MDT by NWS Missoula MT
Description: * WHAT...Sustained south winds 20 to 30 mph with gusts up to 35 mph
expected.

* WHERE...Flathead/Mission Valleys.

* WHEN...From noon today to 3 AM MDT Monday.

* IMPACTS...Strong winds and rough waves on area lakes will create
hazardous conditions for small craft.

Alert: Winter Weather Advisory
Area(s): Absaroka/Beartooth Mountains
Effective: 2026-06-28 @ 12:08 am -> 2026-06-29 @ 12:15 am
Onset: 2026-06-28 @ 12:08 am -> 2026-06-29 @ 7:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-06-28 @ 12:08 am
Headline: Winter Weather Advisory issued June 27 at 11:08PM MDT until June 29 at 6:00PM MDT by NWS Billings MT
Description: * WHAT...Wet snow expected for the Beartooth Highway. Total snow
accumulations of 1 to 3 inches. Winds gusting as high as 40 mph
tonight into Sunday, then up to 55 mph on Monday.

* WHERE...Absaroka/Beartooth Mountains.

* WHEN...Until 6 PM MDT Monday.

* IMPACTS...Travel on the Beartooth Highway will be impacted by
wintry conditions.

* ADDITIONAL DETAILS...The snow will lighten or even stop for a time
Sunday afternoon into Sunday evening. Snow will redevelop Sunday
night and continue into Monday.

Alert: Winter Storm Warning
Area(s): Butte/Blackfoot Region
Effective: 2026-06-27 @ 7:16 pm -> 2026-06-28 @ 3:30 am
Onset: 2026-06-27 @ 7:16 pm -> 2026-06-29 @ 10:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-06-27 @ 7:16 pm
Headline: Winter Storm Warning issued June 27 at 6:16PM MDT until June 29 at 9:00AM MDT by NWS Missoula MT
Description: * WHAT...Heavy wet snow expected above 6500 feet. Total snow
accumulations of 4 to 8 inches, with 8 to 16 inches across the
Anaconda Pintler Mountains. Snow levels may briefly lower and could
produce minor slushy accumulation at Homestake and Macdonald Pass.

* WHERE...Georgetown Lake, backcountry and higher elevation areas.

* WHEN...Until 9 AM MDT Monday.

* IMPACTS...Plan for winter-like conditions in the backcountry and
higher elevations. Cold temperatures, wind, and wet snow will
elevate the risk of hypothermia. Heavy wet snow may down trees,
blocking access to backcountry roadways.

* ADDITIONAL DETAILS...West winds 10 to 20 mph with gusts up to 30
mph.

Alert: Winter Storm Warning
Area(s): Bitterroot/Sapphire Mountains
Effective: 2026-06-27 @ 7:16 pm -> 2026-06-28 @ 3:30 am
Onset: 2026-06-27 @ 7:16 pm -> 2026-06-29 @ 10:00 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-06-27 @ 7:16 pm
Headline: Winter Storm Warning issued June 27 at 6:16PM MDT until June 29 at 9:00AM MDT by NWS Missoula MT
Description: * WHAT...Heavy wet snow expected above 6500 feet. Total snow
accumulations of 4 to 8 inches, with up to 12 inches across the
highest peaks.

* WHERE...Skalkaho Pass, Nez Perce Pass, backcountry and higher
elevation areas.

* WHEN...Until 9 AM MDT Monday.

* IMPACTS...Plan for winter-like conditions in the backcountry and
higher elevations. Cold temperatures, wind, and wet snow will
elevate the risk of hypothermia. Heavy wet snow may down trees,
blocking access to backcountry roadways.

* ADDITIONAL DETAILS...West winds 10 to 20 mph with gusts up to 30
mph.

Alert: Hydrologic Outlook
Area(s): Flathead, MT; Lake, MT
Effective: 2026-06-27 @ 1:25 pm -> 2026-06-30 @ 7:00 am
Onset: 2026-06-27 @ 1:25 pm
Severity: Unknown
Certainty: Possible
Urgency: Future
Issued By: NWS Missoula MT on 2026-06-27 @ 1:25 pm
Headline: Hydrologic Outlook issued June 27 at 12:25PM MDT by NWS Missoula MT
Description: ESFMSO

What: Widespread moderate rainfall over a prolonged period of time.
Storm total amounts between 1 to 3 inches for valleys and 2 to 4
inches for the mountains.

Where: Flathead and Lake Counties in northwest Montana, including
Glacier National Park.

Timing: Beginning Sunday afternoon, continuing through Monday night.

Significant rainfall totals will bring potential for rapid rises on
streams and creeks, rock and debris slides and runoff issues in poor
drainage areas. Those recreating in the backcountry should take
caution on backcountry roadways for falling debris. If camping, be
mindful of where you park your RV or pitch your tent. Avoid setting
up near water's edge, as streams and reservoirs could rise rapidly
and flood your site.