Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Severe Thunderstorm Warning
Area(s): Jefferson, MT; Lewis and Clark, MT
Effective: 2026-07-16 @ 4:59 pm -> 2026-07-16 @ 5:15 pm
Onset: 2026-07-16 @ 4:59 pm -> 2026-07-16 @ 5:15 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Great Falls MT on 2026-07-16 @ 4:59 pm
Headline: Severe Thunderstorm Warning issued July 16 at 3:59PM MDT until July 16 at 4:15PM MDT by NWS Great Falls MT
Description: At 358 PM MDT, a severe thunderstorm was located 11 miles northeast
of Basin, or 12 miles north of Boulder, moving east at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.

Locations impacted include...
Clancy, Wickes, Jefferson City, Alhambra, and Corbin.

Alert: Severe Thunderstorm Warning
Area(s): Beaverhead, MT
Effective: 2026-07-16 @ 4:55 pm -> 2026-07-16 @ 6:00 pm
Onset: 2026-07-16 @ 4:55 pm -> 2026-07-16 @ 6:00 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Great Falls MT on 2026-07-16 @ 4:55 pm
Headline: Severe Thunderstorm Warning issued July 16 at 3:55PM MDT until July 16 at 5:00PM MDT by NWS Great Falls MT
Description: SVRTFX

The National Weather Service in Great Falls has issued a

* Severe Thunderstorm Warning for...
Northern Beaverhead County in southwestern Montana...

* Until 500 PM MDT.

* At 354 PM MDT, a severe thunderstorm was located 19 miles west of
Dillon, moving northeast at 10 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

* Locations impacted include...
Bannack and Bannack State Park.

Alert: Severe Thunderstorm Warning
Area(s): Judith Basin, MT
Effective: 2026-07-16 @ 4:53 pm -> 2026-07-16 @ 5:30 pm
Onset: 2026-07-16 @ 4:53 pm -> 2026-07-16 @ 5:30 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Great Falls MT on 2026-07-16 @ 4:53 pm
Headline: Severe Thunderstorm Warning issued July 16 at 3:53PM MDT until July 16 at 4:30PM MDT by NWS Great Falls MT
Description: At 352 PM MDT, severe thunderstorms were located along a line
extending from 10 miles west of Hobson to 21 miles southwest of
Stanford, moving east at 10 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.

Locations impacted include...
Sapphire Village.

Alert: Severe Thunderstorm Warning
Area(s): Cascade, MT; Lewis and Clark, MT
Effective: 2026-07-16 @ 4:46 pm -> 2026-07-16 @ 5:30 pm
Onset: 2026-07-16 @ 4:46 pm -> 2026-07-16 @ 5:30 pm
Severity: Severe
Certainty: Observed
Urgency: Immediate
Issued By: NWS Great Falls MT on 2026-07-16 @ 4:46 pm
Headline: Severe Thunderstorm Warning issued July 16 at 3:46PM MDT until July 16 at 4:30PM MDT by NWS Great Falls MT
Description: At 345 PM MDT, a severe thunderstorm was located 16 miles north of
Wolf Creek, or 23 miles west of Cascade, moving southeast at 20 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles.

Locations impacted include...
Wolf Creek, Bowmans Corner, and Craig.

Alert: Special Weather Statement
Area(s): Red Lodge Foothills; Absaroka/Beartooth Mountains
Effective: 2026-07-16 @ 4:31 pm -> 2026-07-16 @ 5:15 pm
Onset: 2026-07-16 @ 4:31 pm
Severity: Moderate
Certainty: Observed
Urgency: Expected
Issued By: NWS Billings MT on 2026-07-16 @ 4:31 pm
Headline: Special Weather Statement issued July 16 at 3:31PM MDT by NWS Billings MT
Description: At 331 PM MDT, Doppler radar was tracking a strong thunderstorm 12
miles west of Red Lodge, moving north at 15 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...
Luther and Roscoe.

Alert: Flash Flood Watch
Area(s): Big Belt, Bridger and Castle Mountains
Effective: 2026-07-15 @ 12:51 pm -> 2026-07-17 @ 1:00 am
Onset: 2026-07-16 @ 3:00 pm -> 2026-07-17 @ 1:00 am
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Great Falls MT on 2026-07-15 @ 12:51 pm
Headline: Flash Flood Watch issued July 15 at 11:51AM MDT until July 17 at 12:00AM MDT by NWS Great Falls MT
Description: * WHAT...Flash flooding and debris flows caused by excessive rainfall
are 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 Thursday afternoon through Thursday evening.

* IMPACTS...Heavy rainfall over the Horse Gulch Burn Scar is expected
up to and during the period of the watch. Rainfall rates of 0.25 to
0.75 of an inch per hour are possible with thunderstorms. Residents
near the Horse Gulch Burn Scar should prepare for potential debris
flow. Be sure to stay up to date with information from local
authorities. Heavy rainfall could trigger flash flooding of
low-lying areas, urbanized street flooding, and debris flows in and
near recent wildfire burn scars.

* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the burn scar, which may lead to flash flooding and
debris flows.
- Some locations that may experience flash flooding include...
Maudlow, Trident and York.
- http://www.weather.gov/safety/flood