Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Flood Watch |
| Area(s): | East Glacier Park Region |
| Effective: | 2026-06-28 @ 1:36 am -> 2026-06-28 @ 7:00 pm |
| Onset: | 2026-06-28 @ 7:00 pm -> 2026-06-30 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-06-28 @ 1:36 am |
| Headline: | Flood Watch issued June 28 at 12:36AM MDT until June 30 at 12:00PM 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...From this evening through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Reasoning for the flood watch. 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. - Flooding safety web page: 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 @ 12:40 am -> 2026-06-28 @ 2:00 pm |
| Onset: | 2026-06-28 @ 1:00 pm -> 2026-06-29 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-06-28 @ 12:40 am |
| Headline: | Lake Wind Advisory issued June 27 at 11:40PM MDT until June 29 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph expected. * WHERE...Fort Peck Lake. * WHEN...From noon Sunday to 2 AM MDT Monday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Waves heights up to 4 feet. |
| 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: | Flood Advisory |
| Area(s): | Garfield, MT |
| Effective: | 2026-06-27 @ 11:55 pm -> 2026-06-28 @ 1:00 pm |
| Onset: | 2026-06-27 @ 11:55 pm -> 2026-06-28 @ 1:00 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-06-27 @ 11:55 pm |
| Headline: | Flood Advisory issued June 27 at 10:55PM MDT until June 28 at 12:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Small stream flooding caused by excessive rainfall is expected. * WHERE...Central Garfield County in northeastern Montana... * WHEN...Until noon MDT Sunday. * IMPACTS...Flooding in low-lying and poor drainage areas. Rises in small streams and water over roadways. * ADDITIONAL DETAILS... - At 1053 PM MDT, Emergency management reported flooding from heavy rain Saturday evening in the advisory area. Flooding will continue into Sunday morning. - Some locations that will experience flooding include... Jordan. - http://www.weather.gov/safety/flood |
| 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: | Winter Weather Advisory |
| Area(s): | Elkhorn and Boulder Mountains; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-06-27 @ 1:44 pm -> 2026-06-28 @ 7:00 am |
| Onset: | 2026-06-27 @ 7:00 pm -> 2026-06-29 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-06-27 @ 1:44 pm |
| Headline: | Winter Weather Advisory issued June 27 at 12:44PM MDT until June 29 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Periods of wet snow expected. Total snow accumulations up to 5 inches above 6500 feet, with localized amounts in excess of 9 inches near highest peaks. * WHERE...Elkhorn and Boulder Mountains, Gallatin and Madison County Mountains and Centennial Mountains, and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...From 6 PM this evening to 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: | 2026-06-27 @ 1:44 pm -> 2026-06-28 @ 7:00 am |
| Onset: | 2026-06-27 @ 7:00 pm -> 2026-06-29 @ 1:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-06-27 @ 1:44 pm |
| Headline: | Winter Storm Warning issued June 27 at 12:44PM MDT until June 29 at 12:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Heavy snow expected. Total snow accumulations between 2 and 6 inches at pass level, with snow amounts in excess of a foot in the higher terrain. * WHERE...Northwest Beaverhead County. * WHEN...From 6 PM this evening to noon MDT Monday. * IMPACTS...Travel could be difficult over passes. Back country conditions will be very dangerous, especially near and above pass level. * ADDITIONAL DETAILS...Wet snow may down trees and block access to forest roadways. |
| 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. |