Hail, Park
- When
- July 10, 12:00 PM MST
- Where
- Park County, 2.01 mi NE of Silver Gate
- Measured
- 0.88 in hail
- Reported by
- COOP Observer
- Coordinates
- 45.020, -109.970
Hail and Damaging Winds in Montana, July 10, 2017
A strong Pacific cold front swept across the Billings Forecast area during the afternoon and early evening of the 10th. Thunderstorms developed ahead of and along the front.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 10
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS BYZ wrote it up.
A strong Pacific cold front swept across the Billings Forecast area during the afternoon and early evening of the 10th. Thunderstorms developed ahead of and along the front. Temperatures ahead of the front were very hot with low dewpoints. As a result, these thunderstorms produced very strong and damaging wind gusts. Although many areas reported strong wind gusts, the only location that reported damage was Miles City in Custer County.
The very strong winds downed power lines across the Miles City area which sparked some grass fires. Power lines fell on one house causing it to catch fire. The house was reported to be totally destroyed. Most of Miles City was without power for a period of time.
The radar
The Billings radar (KBLX), 141 km away, was scanning. The volume nearest the first event began at 18:59 UTC.
Event by event
8 thunderstorm wind, 2 hail. Local standard time, as filed.
Hail, Park
- When
- July 10, 1:31 PM MST
- Where
- Park County, 1.38 mi S of Pine Creek
- Measured
- 1.5 in hail
- Reported by
- COOP Observer
- Coordinates
- 45.480, -110.570
The hail size ranged from pea to ping pong ball size over a 30 minute period. The observer is located at approximately 5000 feet elevation.
Thunderstorm Wind, Treasure
- When
- July 10, 3:45 PM MST
- Where
- Treasure County, 6.51 mi SSE of Myers
- Measured
- 53 kt (61 mph) measured gust
- Reported by
- Department of Highways
- Coordinates
- 46.160, -107.310
Thunderstorm Wind, Rosebud
- When
- July 10, 3:54 PM MST
- Where
- Rosebud County, 2.52 mi NW of Forsyth
- Measured
- 55 kt (63 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 46.300, -106.700
Thunderstorm Wind, Rosebud
- When
- July 10, 3:56 PM MST
- Where
- Rosebud County, Forsyth
- Measured
- 52 kt (60 mph) measured gust
- Reported by
- CoCoRaHS
- Coordinates
- 46.270, -106.670
Thunderstorm Wind, Custer
- When
- July 10, 4:36 PM MST
- Where
- Custer County, 0.48 mi W of Miles City Arpt
- Measured
- 62 kt (71 mph) measured gust
- Reported by
- ASOS
- Coordinates
- 46.430, -105.890
Thunderstorm Wind, Custer
- When
- July 10, 4:41 PM MST
- Where
- Custer County, 1.18 mi NW of Miles City
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 46.410, -105.850
The very strong winds downed power lines across the Miles City area which sparked some grass fires. Power lines fell on one house causing it to catch fire. The house was reported to be totally destroyed. Most of Miles City was without power for a period of time.
Thunderstorm Wind, Custer
- When
- July 10, 4:53 PM MST
- Where
- Custer County, 2.85 mi W of Kinsey
- Measured
- 61 kt (70 mph) measured gust
- Reported by
- CoCoRaHS
- Coordinates
- 46.570, -105.710
The winds created a severe dust storm.
Thunderstorm Wind, Rosebud
- When
- July 10, 5:00 PM MST
- Where
- Rosebud County, 1.17 mi NW of Rock Spgs
- Measured
- 52 kt (60 mph) measured gust
- Reported by
- Department of Highways
- Coordinates
- 46.830, -106.270
Thunderstorm Wind, Custer
- When
- July 10, 5:29 PM MST
- Where
- Custer County, 16.58 mi ENE of Volborg
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 45.980, -105.390
Winds estimated at 70 mph resulted in power outages southwest of Mizpah.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Flash Flood in Indiana, July 10 to 12, 2017
- Dust Storm in New Mexico, July 10, 2017
- Lightning Strike in Florida, July 10, 2017
- Tornado and Hail in Illinois, July 10, 2017
- Tornado and Flash Flooding in Indiana, July 10 to 11, 2017
- Flash Flood and Hail in Ohio, July 10 to 11, 2017
- Tornado and Flash Flooding in Ohio, July 10, 2017
- Damaging Winds in West Virginia, July 10, 2017
- Tornado and Flash Flood in Ohio, July 10, 2017
- Tornadoes and Damaging Winds in Pennsylvania, July 10, 2017
- Flash Flood in Michigan, July 10, 2017
- Damaging Wind and Lightning Strike in Arizona, July 10, 2017
More
Every storm in Montana in 2017Every state in 2017This day in weather historyWarnings in Montana, July 2017
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 699867, 699866, 699864, 699863, 699861, 699860, 699858, 699854, 699853, 699851.