Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Western and Central Chouteau County; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Little Belt and Highwood Mountains; Snowy and Judith Mountains |
| Effective: | 2026-07-01 @ 5:57 pm -> 2026-07-01 @ 7:30 pm |
| Onset: | 2026-07-01 @ 5:57 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-01 @ 5:57 pm |
| Headline: | Special Weather Statement issued July 1 at 4:57PM MDT by NWS Great Falls MT |
| Description: |
At 457 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 6 miles north of Belt to near Geyser to 25 miles southwest of Hobson. Movement was east at 20 mph. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Stanford, Geraldine, Denton, Hobson, Moore, Geyser, Windham, Moccasin, Ackley Lake State Park, Sapphire Village, Utica, Garneill, Danvers, Coffee Creek, Square Butte, Buffalo, and Benchland. |
| Alert: | Special Weather Statement |
| Area(s): | Missoula/Bitterroot Valleys; Bitterroot/Sapphire Mountains |
| Effective: | 2026-07-01 @ 5:53 pm -> 2026-07-01 @ 6:15 pm |
| Onset: | 2026-07-01 @ 5:53 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-07-01 @ 5:53 pm |
| Headline: | Special Weather Statement issued July 1 at 4:53PM MDT by NWS Missoula MT |
| Description: |
At 453 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from over Victor to near Darby, or extending from 11 miles north of Hamilton to 11 miles south of Hamilton, moving northeast at 25 mph. HAZARD...Heavy rain and pea size hail. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Locations impacted include... Hamilton, Stevensville, Darby, Woodside, Victor, Pinesdale, Corvallis, Grantsdale, Bell Crossing, Charlos Heights and Como. |
| Alert: | Special Weather Statement |
| Area(s): | Northern Stillwater; Beartooth Foothills |
| Effective: | 2026-07-01 @ 5:10 pm -> 2026-07-01 @ 6:00 pm |
| Onset: | 2026-07-01 @ 5:10 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-01 @ 5:10 pm |
| Headline: | Special Weather Statement issued July 1 at 4:10PM MDT by NWS Billings MT |
| Description: |
At 410 PM MDT, Doppler radar was tracking an area of strong thunderstorms from Absarokee to Park City moving northeast at 20 mph. HAZARD...Wind gusts up to 40 mph and penny 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... Columbus, Absarokee, Fishtail and Park City. |
| Alert: | Flood Advisory |
| Area(s): | Glacier, MT |
| Effective: | 2026-07-01 @ 1:00 pm -> 2026-07-02 @ 12:45 pm |
| Onset: | 2026-07-01 @ 1:00 pm -> 2026-07-02 @ 12:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-01 @ 1:00 pm |
| Headline: | Flood Advisory issued July 1 at 12:00PM MDT until July 2 at 11:45AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northwestern Glacier County in north central Montana... * WHEN...Until 1145 AM MDT Thursday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1145 AM MDT, local law enforcement reported ongoing minor flooding in the warned area. - Flooding impacts will continue but no additional rainfall is expected. - Some locations that will experience flooding include... Many Glacier. - http://www.weather.gov/safety/flood |
| Alert: | Flash Flood Watch |
| Area(s): | Big Belt, Bridger and Castle Mountains |
| Effective: | 2026-07-01 @ 11:58 am -> 2026-07-01 @ 8:00 pm |
| Onset: | 2026-07-01 @ 3:00 pm -> 2026-07-01 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-01 @ 11:58 am |
| Headline: | Flash Flood Watch issued July 1 at 10:58AM MDT until July 1 at 10:00PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flash flooding and debris flows caused by excessive rainfall continue to be possible over the Horse Gulch burn scar. * WHERE...A portion of central Montana, including the following area, Big Belt, Bridger and Castle Mountains. * WHEN...From 2 PM this afternoon to 10 PM MDT this evening. * IMPACTS...Heavy rainfall could trigger flash flooding in low-lying areas and cause debris flows. Residents and those recreating near the Horse Gulch burn scar should prepare for the potential of flash flooding and debris flows. * ADDITIONAL DETAILS... - Slow moving thunderstorms producing heavy rain. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Elkhorn and Boulder Mountains; Northwest Beaverhead County |
| Effective: | 2026-07-01 @ 11:58 am -> 2026-07-01 @ 8:00 pm |
| Onset: | 2026-07-01 @ 1:00 pm -> 2026-07-02 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-01 @ 11:58 am |
| Headline: | Flood Watch issued July 1 at 10:58AM MDT until July 2 at 12:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of central and southwest Montana, including the following areas, in central Montana, Elkhorn and Boulder Mountains. In southwest Montana, Northwest Beaverhead County. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Slow moving thunderstorms producing heavy rain. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Missoula/Bitterroot Valleys; Bitterroot/Sapphire Mountains; Butte/Blackfoot Region |
| Effective: | 2026-07-01 @ 11:15 am -> 2026-07-02 @ 1:00 am |
| Onset: | 2026-07-01 @ 1:00 pm -> 2026-07-02 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Missoula MT on 2026-07-01 @ 11:15 am |
| Headline: | Flood Watch issued July 1 at 10:15AM MDT until July 2 at 12:00AM MDT by NWS Missoula MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...A portion of west central Montana, including the following areas, Bitterroot/Sapphire Mountains, Butte/Blackfoot Region and Missoula/Bitterroot Valleys. This includes the following Specific Areas... Missoula, Butte, Frontage Road from Bearmouth to Drummond, West Valley near Anaconda, Philipsburg, Eds Gulch in Drummond, New Chicago area just east of Drummond, Johnson Fire Burn Area, Daly Fire Burn Area and Sharrott Fire Burn Area. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Slow moving thunderstorm producing heavy rain. - https://www.weather.gov/mso/hydrology |