Name: Hail in Montana, July 11, 2010
Start: 2010-07-11T12:46
End: 2010-07-11T12:46
Location: Montana

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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

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.

An isolated thunderstorm producing quarter size hail moved across Powder River County.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Billings, MT wrote its last area forecast discussion before the first event at Jul 11, 12:08 PM MST, 38 minutes earlier.

Area forecast discussion, Jul 11, 12:08 PM MST, 38 minutes before

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Hazardous weather outlook, Jul 11, 12:10 PM MST, 36 minutes before

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In the hours before

Special weather statement, Jul 11, 11:14 AM MST, 1 hour 32 minutes before

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The radar

The Billings radar (KBLX), 237 km away, was scanning. The volume nearest the first event began at 19:46 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Powder River

When: July 11, 12:46 PM MST
Where: Powder River County, 3.12 mi SSE of Epsie
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 45.440, -105.620

Marble to quarter size hail covered the ground.

What these are

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 2010 Every state in 2010 This day in weather history Warnings in Montana, July 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 2026-10-01. Each event’s entry at NCEI: 250265.