Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Special Weather Statement
Area(s): East Glacier Park Region; Northern High Plains
Effective: 2026-06-30 @ 12:36 am -> 2026-06-30 @ 3:00 am
Onset: 2026-06-30 @ 12:36 am
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-30 @ 12:36 am
Headline: Special Weather Statement issued June 29 at 11:36PM MDT by NWS Great Falls MT
Description: Scattered showers and thunderstorms will affect Glacier County
through 2 AM Tuesday morning. Expect occasional lightning and a
brief period of heavy rain as the storms move through.

Some locations near the path of the storms include Glacier
National Park, St. Mary and Babb.

Reminder if you can see lightning or hear thunder, try to go
inside until the storm passes.

Alert: Flood Warning
Area(s): Glacier, MT; Pondera, MT
Effective: 2026-06-29 @ 10:17 pm -> 2026-06-30 @ 4:15 pm
Onset: 2026-06-29 @ 10:17 pm -> 2026-06-30 @ 4:15 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-29 @ 10:17 pm
Headline: Flood Warning issued June 29 at 9:17PM MDT until June 30 at 3:15PM MDT by NWS Great Falls MT
Description: * WHAT...Flooding caused by rain and snowmelt is expected.

* WHERE...Western Glacier County in north central Montana...
West Central Pondera County in north central Montana...

* WHEN...Until 315 PM MDT Tuesday.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring.

* ADDITIONAL DETAILS...
- At 912 PM MDT, Satellite estimates and rain gauge data indicate
heavy rain and snowmelt from thunderstorms in the warned area.
Flooding is ongoing or expected to begin shortly. Between 2 and 4
inches of rain have fallen.
- Additional rainfall amounts of 0.5 to 1 inch are possible in the
warned area.
- Some locations that will experience flooding include...
Kiowa, East Glacier Park, East Glacier Park Village, the entire
east side of Glacier National Park, Saint Mary, Babb, Many
Glacier, Marias Pass and Goat Haunt.

Alert: Flood Warning
Area(s): Glacier, MT; Pondera, MT
Effective: 2026-06-29 @ 9:41 pm -> 2026-06-30 @ 3:45 pm
Onset: 2026-06-29 @ 9:41 pm -> 2026-06-30 @ 3:45 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-29 @ 9:41 pm
Headline: Flood Warning issued June 29 at 8:41PM MDT until June 30 at 2:45PM MDT by NWS Great Falls MT
Description: * WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Southern Glacier County in north central Montana...
Northwestern Pondera County in north central Montana...

* WHEN...Until 245 PM MDT Tuesday.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring.

* ADDITIONAL DETAILS...
- At 841 PM MDT, gauge reports indicated ongoing flooding at Badger
Creek below Four Horns Canal. Flooding is already occurring in
the warned area.
- This includes the following streams and drainages...
Whitetail Creek, North Fork Whitetail Creek and Badger Creek.
Additional rainfall amounts up to 0.5 inches are possible in the
warned area.
- Some locations that will experience flooding include...
Mainly rural areas of Southern Glacier and Northwestern Pondera
Counties.
- http://www.weather.gov/safety/flood

Alert: Lake Wind Advisory
Area(s): Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone
Effective: 2026-06-29 @ 6:52 pm -> 2026-06-30 @ 6:00 am
Onset: 2026-06-30 @ 7:00 am -> 2026-06-30 @ 9:00 pm
Severity: Moderate
Certainty: Likely
Urgency: Expected
Issued By: NWS Glasgow MT on 2026-06-29 @ 6:52 pm
Headline: Lake Wind Advisory issued June 29 at 5:52PM MDT until June 30 at 8:00PM MDT by NWS Glasgow MT
Description: * WHAT...West winds 15 to 25 mph with gusts up to 35 mph expected.

* WHERE...Fort Peck Lake

* WHEN...From 6 AM to 8 PM MDT Tuesday.

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

* ADDITIONAL DETAILS...Look for waves up to 4 feet on Tuesday.

Alert: Flood Advisory
Area(s): Glacier, MT; Pondera, MT
Effective: 2026-06-29 @ 4:50 pm -> 2026-06-30 @ 4:45 pm
Onset: 2026-06-29 @ 4:50 pm -> 2026-06-30 @ 4:45 pm
Severity: Minor
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-29 @ 4:50 pm
Headline: Flood Advisory issued June 29 at 3:50PM MDT until June 30 at 3:45PM MDT by NWS Great Falls MT
Description: * WHAT...Small stream flooding caused by excessive rainfall is
expected.

* WHERE...Southern Glacier County in north central Montana...
Northwestern Pondera County in north central Montana...

* WHEN...Until 345 PM MDT Tuesday.

* IMPACTS...River or stream flows are elevated.

* ADDITIONAL DETAILS...
- At 348 PM MDT, gauge reports indicated heavy rain was causing
Badger Creek to rise rapidly. Minor flooding along Badger Creek
is likely to begin shortly.
- This includes the following streams and drainages...
Whitetail Creek, North Fork Whitetail Creek and Badger Creek.
Additional rainfall amounts up to 0.5 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Mainly rural areas of Southern Glacier and Northwestern Pondera
Counties.
- http://www.weather.gov/safety/flood

Alert: Flood Warning
Area(s): Flathead, MT
Effective: 2026-06-29 @ 2:45 pm -> 2026-06-30 @ 11:45 am
Onset: 2026-06-29 @ 2:45 pm -> 2026-06-30 @ 11:45 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-06-29 @ 2:45 pm
Headline: Flood Warning issued June 29 at 1:45PM MDT until June 30 at 10:45AM MDT by NWS Missoula MT
Description: * WHAT...Small stream flooding caused by excessive rainfall is
expected.

* WHERE...Northeastern Flathead County in northwestern Montana...

* WHEN...Until 1045 AM MDT Tuesday.

* IMPACTS...Flooding of creeks and small streams in Glacier National
Park is imminent or occurring. Streams continue to rise due to
excess runoff from ongoing rainfall. Expect many areas of slow
moving or standing water.

* ADDITIONAL DETAILS...
- At 143 PM MDT, Doppler radar indicated heavy rain. Flooding is
already occurring in the warned area.
- Some locations that will experience flooding include...
Lake McDonald, Apgar, Nyack and Pinnacle.
- https://www.weather.gov/mso/hydrology

Alert: Flood Warning
Area(s): Glacier, MT
Effective: 2026-06-29 @ 2:05 pm -> 2026-06-30 @ 1:45 pm
Onset: 2026-06-29 @ 2:05 pm -> 2026-06-30 @ 1:45 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Great Falls MT on 2026-06-29 @ 2:05 pm
Headline: Flood Warning issued June 29 at 1:05PM MDT until June 30 at 12:45PM MDT by NWS Great Falls MT
Description: * WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Areas along Swiftcurrent Creek near Many Glacier in Glacier
National Park.

* WHEN...Until 1245 PM MDT Tuesday.

* IMPACTS...Flooding and elevated flow of creeks and streams, and
other low-lying and flood-prone locations is imminent or occurring.

* ADDITIONAL DETAILS...
- At 1248 PM MDT, Recent heavy rainfall has resulted in elevated
flows on creeks and streams including Swiftcurrent Creek near
Many Glacier. Flooding is expected as water levels continue to
rise through this evening from runoff and some additional
precipitation.
- At 1230 PM MDT, Swiftcurrent Creek at Many Glacier was at a stage
of 4.5 ft. A rise to 6.2 ft is forecast to occur by 6 PM MDT
early this evening. Creek rises at this location will impact
access to the Many Glacier area.
- Some locations that will experience flooding include...
Many Glacier.
- http://www.weather.gov/safety/flood

Alert: Flood Warning
Area(s): Lake, MT
Effective: 2026-06-29 @ 11:50 am -> 2026-06-30 @ 11:45 am
Onset: 2026-06-29 @ 11:50 am -> 2026-06-30 @ 11:45 am
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Missoula MT on 2026-06-29 @ 11:50 am
Headline: Flood Warning issued June 29 at 10:50AM MDT until June 30 at 10:45AM MDT by NWS Missoula MT
Description: * WHAT...Flooding caused by excessive rainfall is expected. An
additional 1 to 3 inches of rain is possible in the warned area
through 6am Tuesday.

* WHERE...South Central Lake County in northwestern Montana...

* WHEN...Until 1045 AM MDT Tuesday.

* IMPACTS...Flooding of creeks and streams draining out of the
Mission Mountains, included but not limited to Crow Creek, Post
Creek and Mission Creek, is imminent or occurring. Streams continue
to rise due to excess runoff from ongoing rainfall. Ponding of
water and minor flooding is anticipated in poor drainage areas.

* ADDITIONAL DETAILS...
- At 1039 AM MDT, Doppler radar and automated rain gauges indicated
heavy rain. Flooding is ongoing or expected to begin shortly in
the warned area.
- Some locations that will experience flooding include...
Ronan, St. Ignatius, Pablo, Kicking Horse, Allentown, Fort Connah
and Charlo.
- https://www.weather.gov/mso/hydrology

Alert: Flood Watch
Area(s): West Glacier Region; Flathead/Mission Valleys
Effective: 2026-06-29 @ 8:55 am -> 2026-06-30 @ 7:00 am
Onset: 2026-06-29 @ 9:00 am -> 2026-06-30 @ 7:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Missoula MT on 2026-06-29 @ 8:55 am
Headline: Flood Watch issued June 29 at 7:55AM MDT until June 30 at 6:00AM MDT by NWS Missoula MT
Description: * WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...A portion of northwest Montana, including the following
areas, the Flathead/Mission Valleys and West Glacier Region.

* WHEN...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. Flooding may occur in poor
drainage and urban areas.

* ADDITIONAL DETAILS...
- Anywhere from 2 to 5 inches of rain has already fallen through
the higher terrain, particularly the Mission and Swan Ranges.
Prolonged moderate to heavy rain through tonight may bring an
additional 2 to 4 inches in already saturated area.
- https://www.weather.gov/mso/hydrology

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.