Montana, 2010

Hail and Heavy Rain in Montana, June 15, 2010

June 15, 2010 · NWS GGW · 4 events in 2 counties and zones

Strong thunderstorms from central Montana moved east through Petroleum and Garfield counties, bringing gusty winds, brief heavy rain and hail the size of nickels.

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

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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.

What happened

The episode as NWS GGW wrote it up.

Strong thunderstorms from central Montana moved east through Petroleum and Garfield counties, bringing gusty winds, brief heavy rain and hail the size of nickels.

The radar

The Billings radar (KBLX), 154 km away, was scanning. The volume nearest the first event began at 23:42 UTC.

Open the radar archive at this moment

Event by event

2 heavy rain, 2 hail. Local standard time, as filed.

Heavy Rain, Petroleum

When
June 15, 4:40 PM MST to 5:40 PM MST
Where
Petroleum County, 16 mi N of Winnett
Reported by
Trained Spotter
Coordinates
47.232, -108.350

The heavy rain of 0.75 inches fell in 45 to 60 minutes.

Heavy Rain, Garfield

When
June 15, 6:10 PM MST
Where
Garfield County, 3 mi SSW of Mosby
Reported by
Trained Spotter
Coordinates
46.960, -107.894

Water was ponding around the area. Small hail also accompanied the rainfall.

Hail, Garfield

When
June 15, 6:35 PM MST
Where
Garfield County, 5 mi SE of Sand Spgs
Measured
0.75 in hail
Reported by
Trained Spotter
Coordinates
47.049, -107.405

Trained spotter reported penny sized hail with 30 to 40 mph winds.

Hail, Garfield

When
June 15, 6:40 PM MST
Where
Garfield County, 13 mi ESE of Sand Spgs
Measured
0.88 in hail
Reported by
Trained Spotter
Coordinates
47.028, -107.225

Dime to nickel sized hail covered most of the ground along with 30 to 40 mph winds.

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Montana in 2010Every state in 2010This day in weather historyWarnings in Montana, June 2010

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 2026-09-30. Each event’s entry at NCEI: 225045, 225046, 225043, 225044.