Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Judith Basin County and Judith Gap; Little Belt and Highwood Mountains |
| Effective: | 2026-07-14 @ 5:19 pm -> 2026-07-14 @ 6:00 pm |
| Onset: | 2026-07-14 @ 5:19 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-14 @ 5:19 pm |
| Headline: | Special Weather Statement issued July 14 at 4:19PM MDT by NWS Great Falls MT |
| Description: |
At 418 PM MDT, Doppler radar was tracking a strong thunderstorm 20 miles southwest of Stanford, moving northeast at 20 mph. HAZARD...Wind gusts up to 40 mph and half-inch 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... Windham. |
| Alert: | Flood Watch |
| Area(s): | Judith Gap; Crazy Mountains; Southern Wheatland |
| Effective: | 2026-07-14 @ 3:06 pm -> 2026-07-15 @ 4:00 am |
| Onset: | 2026-07-14 @ 4:00 pm -> 2026-07-15 @ 4:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-14 @ 3:06 pm |
| Headline: | Flood Watch issued July 14 at 2:06PM MDT until July 15 at 3:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. * WHERE...Portions of central and south central Montana, including the following areas, in central Montana, Judith Gap and Southern Wheatland. In south central Montana, Crazy Mountains. * WHEN...Through late tonight. * 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 showers and thunderstorms capable of producing very heavy rainfall rates. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Musselshell; Northern Stillwater; Golden Valley; Northern Sweet Grass; Melville Foothills; Northeastern Yellowstone; Southwestern Yellowstone |
| Effective: | 2026-07-14 @ 3:06 pm -> 2026-07-15 @ 3:15 pm |
| Onset: | 2026-07-14 @ 4:00 pm -> 2026-07-15 @ 4:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-14 @ 3:06 pm |
| Headline: | Flood Watch issued July 14 at 2:06PM MDT until July 15 at 3:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. * WHERE...Portions of central and south central Montana, including the following areas, in central Montana, Golden Valley and Musselshell. In south central Montana, Melville Foothills, Northeastern Yellowstone, Northern Stillwater, Northern Sweet Grass and Southwestern Yellowstone. * WHEN...From Wednesday afternoon through late Wednesday night. * 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 showers and thunderstorms capable of producing very heavy rainfall rates. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Red Lodge Foothills; Northern Big Horn; Paradise Valley; Livingston Area; Beartooth Foothills; Absaroka/Beartooth Mountains; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Pryor/Northern Bighorn Mountains; Northeast Bighorn Mountains; Sheridan Foothills |
| Effective: | 2026-07-14 @ 3:06 pm -> 2026-07-15 @ 3:15 pm |
| Onset: | 2026-07-15 @ 1:00 pm -> 2026-07-16 @ 4:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-14 @ 3:06 pm |
| Headline: | Flood Watch issued July 14 at 2:06PM MDT until July 16 at 3:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. The risk is greatest for recent area burn scars including the Robertson Draw and East Side Fires in Montana, and the Elk Fire in Wyoming. * WHERE...Portions of south central Montana, including the following areas, Absaroka/Beartooth Mountains, Beartooth Foothills, Bighorn Canyon, Livingston Area, Northern Big Horn, Northern Carbon, Paradise Valley, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon and Southern Big Horn and north central Wyoming, including the following areas, Northeast Bighorn Mountains and Sheridan Foothills. * WHEN...From Wednesday afternoon through late Wednesday night. * 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 showers and thunderstorms capable of producing very heavy rainfall rates. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Musselshell; Northern Stillwater; Golden Valley; Northern Sweet Grass; Melville Foothills; Northeastern Yellowstone; Southwestern Yellowstone |
| Effective: | 2026-07-14 @ 3:06 pm -> 2026-07-15 @ 3:15 pm |
| Onset: | 2026-07-15 @ 1:00 pm -> 2026-07-16 @ 4:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-14 @ 3:06 pm |
| Headline: | Flood Watch issued July 14 at 2:06PM MDT until July 16 at 3:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall from thunderstorms is possible. * WHERE...Portions of central and south central Montana, including the following areas, in central Montana, Golden Valley and Musselshell. In south central Montana, Melville Foothills, Northeastern Yellowstone, Northern Stillwater, Northern Sweet Grass and Southwestern Yellowstone. * WHEN...From Wednesday afternoon through late Wednesday night. * 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 showers and thunderstorms capable of producing very heavy rainfall rates. - http://www.weather.gov/safety/flood |
| Alert: | Flood Watch |
| Area(s): | Central and Southeast Phillips; Petroleum; Southwest Phillips |
| Effective: | 2026-07-14 @ 2:41 pm -> 2026-07-15 @ 7:00 am |
| Onset: | 2026-07-14 @ 10:00 pm -> 2026-07-15 @ 7:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2026-07-14 @ 2:41 pm |
| Headline: | Flood Watch issued July 14 at 1:41PM MDT until July 15 at 6:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northeast Montana, including the following areas, Central and Southeast Phillips, Petroleum and Southwest Phillips. * WHEN...From 9 PM MDT this evening through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - - Thunderstorms will be moving east into the Watch area, with the potential of heavy downpours that would bring flooding. - http://www.weather.gov/safety/flood |
| Alert: | Heat Advisory |
| Area(s): | Western Roosevelt; Northern Phillips; Southwest Phillips; Northern Valley; Eastern Roosevelt |
| Effective: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 3:00 am |
| Onset: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-14 @ 2:38 pm |
| Headline: | Heat Advisory issued July 14 at 1:38PM MDT until July 15 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Heat index values up to 94. * WHERE...Eastern Roosevelt, Northern Phillips, Northern Valley, Southwest Phillips, and Western Roosevelt Counties. * WHEN...Until 2 AM MDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Heat Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 8:00 am |
| Onset: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 3:00 am |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-14 @ 2:38 pm |
| Headline: | Heat Advisory issued July 14 at 1:38PM MDT until July 15 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Heat Advisory, heat index values up to 100. For the Lake Wind Advisory, northeast winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, McCone, and Petroleum Counties. * WHEN...For the Heat Advisory, until 2 AM MDT Wednesday. For the Lake Wind Advisory, until noon MDT Wednesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Lake Wind Advisory |
| Area(s): | Central and Southeast Phillips; Central and Southern Valley; Petroleum; Garfield; McCone |
| Effective: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 8:00 am |
| Onset: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 1:00 pm |
| Severity: | Moderate |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-14 @ 2:38 pm |
| Headline: | Lake Wind Advisory issued July 14 at 1:38PM MDT until July 15 at 12:00PM MDT by NWS Glasgow MT |
| Description: |
* WHAT...For the Heat Advisory, heat index values up to 100. For the Lake Wind Advisory, northeast winds 15 to 25 mph with gusts up to 35 mph. * WHERE...Central and Southeast Phillips, Central and Southern Valley, Garfield, McCone, and Petroleum Counties. * WHEN...For the Heat Advisory, until 2 AM MDT Wednesday. For the Lake Wind Advisory, until noon MDT Wednesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Hot temperatures and high humidity may cause heat illnesses. |
| Alert: | Extreme Heat Warning |
| Area(s): | Richland; Dawson; Prairie; Wibaux |
| Effective: | 2026-07-14 @ 2:38 pm -> 2026-07-15 @ 8:00 am |
| Onset: | 2026-07-14 @ 2:38 pm -> 2026-07-16 @ 3:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Glasgow MT on 2026-07-14 @ 2:38 pm |
| Headline: | Extreme Heat Warning issued July 14 at 1:38PM MDT until July 16 at 2:00AM MDT by NWS Glasgow MT |
| Description: |
* WHAT...Dangerously hot conditions with heat index values up to 104. * WHERE...Dawson, Prairie, Richland, and Wibaux Counties. * WHEN...Until 2 AM MDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. |
| Alert: | Flood Watch |
| Area(s): | Southern High Plains; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Snowy and Judith Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Gallatin Valley |
| Effective: | 2026-07-14 @ 2:19 pm -> 2026-07-14 @ 11:00 pm |
| Onset: | 2026-07-14 @ 4:00 pm -> 2026-07-15 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-14 @ 2:19 pm |
| Headline: | Flood Watch issued July 14 at 1:19PM MDT until July 15 at 12:00AM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flash flooding caused by excessive rainfall is possible with thunderstorms this afternoon and evening. * WHERE...Portions of central, north central, and southwest Montana. * WHEN...Until midnight MDT tonight. * IMPACTS...Excessive runoff may result in flooding of creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas and near burn scars. * ADDITIONAL DETAILS... - Heavy rainfall produced by thunderstorms may lead to flash flooding. Rainfall rates in excessive of 1 inch per hour are possible under heavier thunderstorms. - Some locations that may experience flooding include... The Horse Gulch burn scar, Great Falls, Bozeman, Helena, Lewistown, Townsend, Fort Benton, White Sulphur Springs, Cascade, Big Sandy, Stanford, Lincoln, Belgrade, East Helena, Three Forks, Manhattan, Belt, Geraldine, Denton, Hobson and the Horse Gulch burn scar. - http://www.weather.gov/safety/flood |
| Alert: | Extreme Heat Warning |
| Area(s): | Southern Rosebud; Sheridan Foothills |
| Effective: | 2026-07-14 @ 1:46 pm -> 2026-07-15 @ 1:00 am |
| Onset: | 2026-07-14 @ 1:46 pm -> 2026-07-15 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-14 @ 1:46 pm |
| Headline: | Extreme Heat Warning issued July 14 at 12:46PM MDT until July 15 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with temperatures up to 105 degrees. * WHERE...In Montana, Southern Rosebud. In Wyoming, Sheridan Foothills. * WHEN...Until midnight MDT tonight. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Musselshell; Treasure; Northern Rosebud; Northern Stillwater; Golden Valley; Red Lodge Foothills; Northern Big Horn; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Northern Carbon; Northeastern Yellowstone; Southwestern Yellowstone |
| Effective: | 2026-07-14 @ 1:46 pm -> 2026-07-15 @ 1:00 am |
| Onset: | 2026-07-14 @ 1:46 pm -> 2026-07-15 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-14 @ 1:46 pm |
| Headline: | Extreme Heat Warning issued July 14 at 12:46PM MDT until July 15 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with temperatures of 95 to 105 degrees. * WHERE...Portions of central, south central, and southeast Montana. * WHEN...Until midnight MDT tonight. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. |
| Alert: | Extreme Heat Warning |
| Area(s): | Custer; Fallon; Powder River; Carter |
| Effective: | 2026-07-14 @ 1:46 pm -> 2026-07-15 @ 2:00 pm |
| Onset: | 2026-07-14 @ 1:46 pm -> 2026-07-16 @ 1:00 am |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-14 @ 1:46 pm |
| Headline: | Extreme Heat Warning issued July 14 at 12:46PM MDT until July 16 at 12:00AM MDT by NWS Billings MT |
| Description: |
* WHAT...Dangerously hot conditions with temperatures of 100 to 105 degrees, warmest today. * WHERE...Carter, Custer, Fallon, and Powder River. * WHEN...Until midnight MDT Wednesday Night. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Very warm nighttime temperatures will provide only limited relief. |