Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Red Flag Warning |
| Area(s): | Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties; Dawson/McCone/Prairie/Richland/Wibaux Counties |
| Effective: | 2026-05-25 @ 1:03 pm -> 2026-05-26 @ 5:00 am |
| Onset: | 2026-05-26 @ 1:00 pm -> 2026-05-26 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-05-25 @ 1:03 pm |
| Headline: | Red Flag Warning issued May 25 at 12:03PM MDT until May 26 at 9:00PM MDT by NWS Glasgow MT |
| Description: |
* AFFECTED AREA...Fire weather zones 120 and 122. * WIND...Southeast at 15 to 25 mph with gusts to 40 mph. * HUMIDITY...As low as 12 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. |
| Alert: | Heat Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-05-25 @ 1:01 pm -> 2026-05-26 @ 5:15 am |
| Onset: | 2026-05-26 @ 1:00 pm -> 2026-05-26 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-05-25 @ 1:01 pm |
| Headline: | Heat Advisory issued May 25 at 12:01PM MDT until May 26 at 9:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Lake Wind Advisory, southeast winds 15 to 25 mph with gusts up to 40 mph expected. For the Heat Advisory, temperatures as high as 102 degrees. * WHERE...Fort Peck Lake. * WHEN...For the Lake Wind Advisory, from 9 AM Tuesday to 6 AM MDT Thursday. For the Heat Advisory, from noon to 9 PM MDT Tuesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures may cause heat illnesses with prolonged exposure. * ADDITIONAL DETAILS...Wave heights as high as 5 feet are expected. |
| Alert: | Heat Advisory |
| Area(s): | Daniels; Sheridan; Western Roosevelt; Richland; Dawson; Prairie; Wibaux; Northern Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2026-05-25 @ 1:01 pm -> 2026-05-26 @ 5:15 am |
| Onset: | 2026-05-26 @ 1:00 pm -> 2026-05-26 @ 10:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-05-25 @ 1:01 pm |
| Headline: | Heat Advisory issued May 25 at 12:01PM MDT until May 26 at 9:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Temperatures as high as 102 degrees. * WHERE...Most of Northeast Montana. * WHEN...From noon to 9 PM MDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses if you are exposed to it for long durations of time. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-05-25 @ 1:01 pm -> 2026-05-26 @ 5:15 am |
| Onset: | 2026-05-26 @ 10:00 am -> 2026-05-28 @ 7:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-05-25 @ 1:01 pm |
| Headline: | Lake Wind Advisory issued May 25 at 12:01PM MDT until May 28 at 6:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Lake Wind Advisory, southeast winds 15 to 25 mph with gusts up to 40 mph expected. For the Heat Advisory, temperatures as high as 102 degrees. * WHERE...Fort Peck Lake. * WHEN...For the Lake Wind Advisory, from 9 AM Tuesday to 6 AM MDT Thursday. For the Heat Advisory, from noon to 9 PM MDT Tuesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures may cause heat illnesses with prolonged exposure. * ADDITIONAL DETAILS...Wave heights as high as 5 feet are expected. |