Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Severe Thunderstorm Watch |
| Area(s): | Carter, MT; Custer, MT |
| Effective: | 2026-06-26 @ 10:26 pm -> 2026-06-27 @ 1:00 am |
| Onset: | 2026-06-26 @ 10:26 pm -> 2026-06-27 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-06-26 @ 10:26 pm |
| Headline: | Severe Thunderstorm Watch issued June 26 at 9:26PM MDT until June 27 at 12:00AM MDT by NWS Billings MT |
| Description: |
SEVERE THUNDERSTORM WATCH 400 REMAINS VALID UNTIL MIDNIGHT MDT TONIGHT FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 2 COUNTIES IN SOUTHEAST MONTANA CARTER CUSTER THIS INCLUDES THE CITIES OF EKALAKA AND MILES CITY. |
| Alert: | Special Weather Statement |
| Area(s): | Fallon |
| Effective: | 2026-06-26 @ 10:14 pm -> 2026-06-26 @ 11:00 pm |
| Onset: | 2026-06-26 @ 10:14 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-06-26 @ 10:14 pm |
| Headline: | Special Weather Statement issued June 26 at 9:14PM MDT by NWS Billings MT |
| Description: |
At 914 PM MDT, Doppler radar was tracking a strong thunderstorm 17 miles northeast of Ekalaka, moving northeast at 25 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Webster. |
| Alert: | Winter Weather Advisory |
| Area(s): | Northwest Beaverhead County; Ruby Mountains and Southern Beaverhead Mountains; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-06-26 @ 1:29 pm -> 2026-06-27 @ 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 2026-06-26 @ 1:29 pm |
| Headline: | Winter Weather Advisory issued June 26 at 12:29PM 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 4 inches above 6500 feet, with localized amounts in excess of 8 inches near highest peaks. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains, Northwest Beaverhead County, and Ruby Mountains and Southern Beaverhead Mountains. * WHEN...From 6 PM Saturday 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): | Bitterroot/Sapphire Mountains |
| Effective: | 2026-06-26 @ 12:04 pm -> 2026-06-29 @ 10:00 am |
| Onset: | 2026-06-27 @ 7:00 pm -> 2026-06-29 @ 10:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-06-26 @ 12:04 pm |
| Headline: | Winter Storm Warning issued June 26 at 11:04AM 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...From 6 PM Saturday to 9 AM MDT Monday. * IMPACTS...Plan for winter-like conditions in the backcountry and higher elevations. Cold temperatures and wet snow will elevate the risk of hypothermia. Heavy wet snow may down trees, blocking access to backcountry roadways. |
| Alert: | Winter Storm Warning |
| Area(s): | Butte/Blackfoot Region |
| Effective: | 2026-06-26 @ 12:04 pm -> 2026-06-29 @ 10:00 am |
| Onset: | 2026-06-27 @ 7:00 pm -> 2026-06-29 @ 10:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-06-26 @ 12:04 pm |
| Headline: | Winter Storm Warning issued June 26 at 11:04AM 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. * WHERE...Georgetown Lake, backcountry and higher elevation areas. * WHEN...From 6 PM Saturday to 9 AM MDT Monday. * IMPACTS...Plan for winter-like conditions in the backcountry and higher elevations. Cold temperatures and wet snow will elevate the risk of hypothermia. Heavy wet snow may down trees, blocking access to backcountry roadways. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-06-26 @ 9:55 am -> 2026-06-27 @ 5:00 am |
| Onset: | 2026-06-26 @ 5:00 pm -> 2026-06-27 @ 5:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-06-26 @ 9:55 am |
| Headline: | Lake Wind Advisory issued June 26 at 8:55AM MDT until June 27 at 4:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...East winds 15 to 25 mph with gusts up to 35 mph expected. * WHERE...Fort Peck Lake. * WHEN...From 4 PM this afternoon to 4 AM MDT Saturday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. * ADDITIONAL DETAILS...Wave heights to 4 feet. |