Montana, 2025

Hail and Damaging Winds in Montana, July 19, 2025

July 19, 2025 · NWS GGW · 8 events in 3 counties and zones

Strong thunderstorms became severe as they moved from McCone County through Prairie County.

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
8

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 became severe as they moved from McCone County through Prairie County.

The radar

The Glasgow radar (KGGW), 119 km away, was scanning. The volume nearest the first event began at 22:54 UTC.

Open the radar archive at this moment

Event by event

4 hail, 3 thunderstorm wind, 1 funnel cloud. Local standard time, as filed.

Hail, McCone

When
July 19, 3:53 PM MST
Where
McCone County, 4.28 mi WSW of Brockway
Measured
1.5 in hail
Reported by
Trained Spotter
Coordinates
47.270, -105.850

Trained spotter reported their truck window was broken by ping pong ball size hail.

Funnel Cloud, McCone

When
July 19, 4:10 PM MST
Where
McCone County, 4.17 mi SE of Brockway
Reported by
Storm Chaser
Coordinates
47.250, -105.720

Video of a funnel cloud was recorded by a storm chaser and posted on social media.

Hail, McCone

When
July 19, 4:15 PM MST
Where
McCone County, 5.82 mi NE of Brockway
Measured
2 in hail
Reported by
Public
Coordinates
47.350, -105.670

Public reported hen egg size hail.

Hail, McCone

When
July 19, 4:20 PM MST
Where
McCone County, 4.28 mi WSW of Brockway
Measured
2 in hail
Reported by
Trained Spotter
Coordinates
47.270, -105.850

Trained spotter reported that their vehicle windshield was cracked by hen egg size hail.

Hail, Dawson

When
July 19, 4:55 PM MST
Where
Dawson County, 7.16 mi SSW of Lindsay Divide Dot
Measured
2 in hail
Reported by
Public
Coordinates
47.170, -105.310

Public reported hen egg size hail.

Thunderstorm Wind, Prairie

When
July 19, 5:30 PM MST
Where
Prairie County, 4.47 mi WNW of Bluffport
Measured
50 kt (58 mph) measured gust
Reported by
Mesonet
Coordinates
46.840, -105.260

A wind gust of 58 mph was recorded at the BLM Terry mesonet site.

Thunderstorm Wind, Prairie

When
July 19, 5:42 PM MST
Where
Prairie County, 0.84 mi NW of Terry
Measured
52 kt (60 mph) estimated gust
Reported by
Public
Coordinates
46.790, -105.310

Winds estimated to be at least 60 mph based on video posted to social media and tree limb damage reported by public.

Thunderstorm Wind, Prairie

When
July 19, 6:00 PM MST
Where
Prairie County, 0.84 mi NW of Terry
Measured
56 kt (64 mph) estimated gust
Reported by
Emergency Manager
Coordinates
46.790, -105.310

County Emergency management shared multiple damage reports from the town of Terry, including downed branches from multiple trees, a downed main power line causing a power outage, a peeled tin roof at the local baseball field. Time is estimated. Wind speed estimated at 65 mph.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.
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

More

Every storm in Montana in 2025Every state in 2025This day in weather historyWarnings in Montana, July 2025

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: 1264761, 1264760, 1264763, 1264762, 1264764, 1264767, 1264765, 1264766.