Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | East Glacier Park Region; Northern High Plains |
| Effective: | 2025-12-28 @ 6:33 am |
| Onset: | 2025-12-28 @ 6:33 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-28 @ 6:33 am |
| Headline: | Special Weather Statement issued December 28 at 5:33AM MST by NWS Great Falls MT |
| Description: |
Westerly winds will increase through the day along the Rocky Mountain Front, with gusts of between 45 to 55 mph being common from the late morning hours today through overnight hours tonight. While the snowpack over the plains is relatively thin there will be a window for patchy blowing and drifting snow over this timeframe, which could lead to reductions in visibility and minor drifts across roadways. Travelers should be prepared for changing road conditions, especially in areas susceptible for blowing and drifting snow. |
| Alert: | Cold Weather Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Daniels; Sheridan; Western Roosevelt; Petroleum; Garfield; McCone; Richland; Dawson; Prairie; Wibaux; Northern Phillips; Southwest Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2025-12-28 @ 3:52 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 3:52 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2025-12-28 @ 3:52 am |
| Headline: | Cold Weather Advisory issued December 28 at 2:52AM MST until December 28 at 11:00AM MST by NWS Glasgow MT |
| Description: |
* WHAT...Very cold wind chills as low as 35 below. * WHERE...A portion of northeast Montana. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes. |
| Alert: | Cold Weather Advisory |
| Area(s): | Fergus County below 4500ft; Snowy and Judith Mountains |
| Effective: | 2025-12-28 @ 3:47 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 3:47 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-28 @ 3:47 am |
| Headline: | Cold Weather Advisory issued December 28 at 2:47AM MST until December 28 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Very cold wind chills as low as 30 below. * WHERE...Snowy and Judith Mountains and Fergus County below 4500ft. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. |
| Alert: | Cold Weather Advisory |
| Area(s): | Eastern Glacier, Western Toole, and Central Pondera; Eastern Toole and Liberty |
| Effective: | 2025-12-28 @ 3:47 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 3:47 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-28 @ 3:47 am |
| Headline: | Cold Weather Advisory issued December 28 at 2:47AM MST until December 28 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Very cold wind chills as low as 30 below. * WHERE...Eastern Glacier, Western Toole, and Central Pondera Counties, and Eastern Toole and Liberty Counties. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes. |
| Alert: | Extreme Cold Warning |
| Area(s): | Hill County; Northern Blaine County; Bears Paw Mountains and Southern Blaine |
| Effective: | 2025-12-28 @ 3:47 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 3:47 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2025-12-28 @ 3:47 am |
| Headline: | Extreme Cold Warning issued December 28 at 2:47AM MST until December 28 at 11:00AM MST by NWS Great Falls MT |
| Description: |
* WHAT...Dangerously cold wind chills as low as 36 below. * WHERE...Bears Paw Mountains and Southern Blaine, Hill County, and Northern Blaine County. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 35 below zero could cause frostbite on exposed skin in as little as 10 minutes. |
| Alert: | Cold Weather Advisory |
| Area(s): | Judith Gap |
| Effective: | 2025-12-28 @ 1:33 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 1:33 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-28 @ 1:33 am |
| Headline: | Cold Weather Advisory issued December 28 at 12:33AM MST until December 28 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Very cold wind chills as low as 27 below occurring. * WHERE...Judith Gap. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 20 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. |
| Alert: | Cold Weather Advisory |
| Area(s): | Northern Rosebud; Custer; Fallon; Carter |
| Effective: | 2025-12-28 @ 1:33 am -> 2025-12-28 @ 12:00 pm |
| Onset: | 2025-12-28 @ 1:33 am -> 2025-12-28 @ 12:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2025-12-28 @ 1:33 am |
| Headline: | Cold Weather Advisory issued December 28 at 12:33AM MST until December 28 at 11:00AM MST by NWS Billings MT |
| Description: |
* WHAT...Very cold wind chills as low as 32 below occurring. * WHERE...Carter, Custer, Fallon, and Northern Rosebud. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 20 minutes. Wind chill values can lead to hypothermia with prolonged exposure. |