Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | East Glacier Park Region |
| Effective: | 2026-06-01 @ 1:23 am -> 2026-06-01 @ 9:00 am |
| Onset: | 2026-06-01 @ 1:23 am |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-06-01 @ 1:23 am |
| Headline: | Special Weather Statement issued June 1 at 12:23AM MDT by NWS Great Falls MT |
| Description: |
Snow will fall in Glacier Park today. Moderate snowfall is possible at times. Snow levels will be around 6000 feet this morning, rising to around 7000 feet later this afternoon. New snow accumulations today above 6000 feet will range from 5 to 10 inches. Those planning to recreate at higher elevations of Glacier Park should be prepared for winter conditions. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-06-01 @ 12:41 am -> 2026-06-01 @ 7:00 pm |
| Onset: | 2026-06-01 @ 12:41 am -> 2026-06-01 @ 7:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-06-01 @ 12:41 am |
| Headline: | Lake Wind Advisory issued May 31 at 11:41PM MDT until June 1 at 6:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...West winds 20 to 30 mph with gusts up to 40 mph. * WHERE...Fort Peck Lake. * WHEN...Until 6 PM MDT Monday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Wave heights in excess of 4 feet. |
| Alert: | Flood Watch |
| Area(s): | West Glacier Region |
| Effective: | 2026-05-31 @ 9:55 pm -> 2026-06-01 @ 1:00 pm |
| Onset: | 2026-05-31 @ 9:55 pm -> 2026-06-01 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-05-31 @ 9:55 pm |
| Headline: | Flood Watch issued May 31 at 8:55PM MDT until June 1 at 12:00PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...A portion of northwest Montana, including the following area, West Glacier Region. This includes the following Specific Areas... Going-to-the-Sun Road in Glacier Park. * WHEN...Through Monday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Rockfall and debris flows are also possible in steep terrain. * ADDITIONAL DETAILS... - Additional rainfall of 0.4-0.8 inches for valley locations with 1 to 2 inches in the terrain are expected Sunday late morning through Monday afternoon. - https://www.weather.gov/mso/hydrology |
| Alert: | Flood Warning |
| Area(s): | Flathead, MT; Lake, MT; Sanders, MT |
| Effective: | 2026-05-31 @ 8:42 pm -> 2026-06-01 @ 8:30 pm |
| Onset: | 2026-05-31 @ 8:42 pm -> 2026-06-01 @ 8:30 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-05-31 @ 8:42 pm |
| Headline: | Flood Warning issued May 31 at 7:42PM MDT until June 1 at 7:30PM MDT by NWS Missoula MT |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...South Central Flathead County in northwestern Montana... Western Lake County in northwestern Montana... Small streams along the Mission and Swan mountain ranges. * WHEN...Until 730 PM MDT Monday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Streams continue to rise due to excess runoff from earlier rainfall. * ADDITIONAL DETAILS... - At 736 PM MDT, emergency management reported heavy rain in the warned area. Flooding is ongoing or expected to begin shortly. Between 1 and 3 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are possible in the warned area. - Some locations that will experience flooding include... Polson, Evergreen, Columbia Falls, Ronan, St. Ignatius, Pablo, Woods Bay, and Bigfork. - Small streams along the Mission and Swan mountain ranges. - https://www.weather.gov/mso/hydrology |
| Alert: | Flood Watch |
| Area(s): | Flathead, MT |
| Effective: | 2026-05-31 @ 12:45 pm -> 2026-06-01 @ 1:15 pm |
| Onset: | 2026-05-31 @ 12:45 pm -> 2026-06-02 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-05-31 @ 12:45 pm |
| Headline: | Flood Watch issued May 31 at 11:45AM MDT until June 2 at 12:00PM MDT by NWS Missoula MT |
| Description: |
...The Flood Watch is extended for the following rivers in Montana... Flathead River At Columbia Falls affecting Flathead County. * WHAT...Flooding is possible. * WHERE...Flathead River At Columbia Falls. * WHEN...Until Tuesday afternoon. * IMPACTS...At 13.0 feet, Farmers crops adjacent to the Flathead River are inundated with water. At 14.0 feet, Flooding of farmers crops adjacent to the Flathead River is likely. Sections of the Steel Bridge Road become inundated with water and impassable. * ADDITIONAL DETAILS... - At 10:45 AM MDT Sunday the stage was 13.0 feet. - Forecast...The river is forecast to crest tonight into Monday morning at 13.5 feet. - Flood stage is 14.0 feet. - https://www.weather.gov/mso/hydrology |
| Alert: | Flood Watch |
| Area(s): | Missoula, MT |
| Effective: | 2026-05-31 @ 12:33 pm -> 2026-06-01 @ 1:15 pm |
| Onset: | 2026-05-31 @ 9:51 pm -> 2026-06-03 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-05-31 @ 12:33 pm |
| Headline: | Flood Watch issued May 31 at 11:33AM MDT until June 3 at 12:00PM MDT by NWS Missoula MT |
| Description: |
......The Flood Watch continues for the following rivers in Montana... Clark Fork River Above Missoula affecting Missoula County. * WHAT...Flooding is possible. * WHERE...Clark Fork River Above Missoula. * WHEN...From this evening to Wednesday afternoon. * IMPACTS...At 7.5 feet, Flooding of low lying areas adjacent to the river is possible. Flood waters begin to flood streets in the Orchard Homes area, specifically the north end of Tower Street including Kehrwald Drive. * ADDITIONAL DETAILS... - At 11:00 AM MDT Sunday the stage was 6.5 feet. - Forecast...Rises on the river are forecast into Monday, flood stage may be reached late Monday morning. Current forecast crest is at 7.5 feet. - Flood stage is 7.5 feet. - https://www.weather.gov/mso/hydrology |