Hail, Custer
- When
- July 31, 12:30 AM MST
- Where
- Custer County, 8 mi NE of Miles City
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 46.483, -105.717
Flash Flooding and Hail in Montana, July 31, 2001
3 flash flood, 1 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
- 4
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.
The radar
The Glasgow radar (KGGW), 203 km away, was scanning. The volume nearest the first event began at 07:31 UTC.
Event by event
3 flash flood, 1 hail. Local standard time, as filed.
Flash Flood, Rosebud
- When
- July 31, 1:10 AM MST
- Where
- Rosebud County, Hathaway
- Reported by
- TRAINED SPOTTER
- Coordinates
- 46.230, -106.731 (the zone’s center; the record gives no point)
Excessive rain with water running over some roads and creeks running bankfull.
Flash Flood, Custer
- When
- July 31, 1:20 AM MST
- Where
- Custer County, Miles City
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 46.253, -105.572 (the zone’s center; the record gives no point)
Major street flooding. Water up to car hoods. Underpass with 7 ft. of water. I-94 closed between mile markers 157-160.
Flash Flood, Custer
- When
- July 31, 2:00 AM MST
- Where
- Custer County, 8 mi NE of Miles City
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 46.253, -105.572 (the zone’s center; the record gives no point)
Several roads partially washed out.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Wisconsin, July 31, 2001
- Flash Flood and Damaging Wind in Arizona, July 31, 2001
- Heat in Wisconsin, July 31, 2001
- Heavy Rain in Florida, July 31, 2001
- Tornado and Flash Flooding in Minnesota, July 31, 2001
- Hail and Damaging Winds in Minnesota, July 31, 2001
- Tornado and Hail in Minnesota, July 31, 2001
- Hail and Damaging Winds in Nebraska, July 31, 2001
- Damaging Winds in North Dakota, July 31, 2001
- Damaging Wind in Louisiana, July 31, 2001
- Cold in New Jersey, July 31, 2001
- Flash Flood and Hail in North Dakota, July 31, 2001
More
Every storm in Montana in 2001Every state in 2001This day in weather historyWarnings in Montana, July 2001
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 2026-10-01. Each event’s entry at NCEI: 5258297, 5258298, 5258300, 5258299.