Hail and Damaging Winds in Montana, June 15, 2025

Name: Hail and Damaging Winds in Montana, June 15, 2025
Start: 2025-06-15T17:00
End: 2025-06-15T23:00
Location: Montana

June 15, 2025 · NWS GGW · 21 events in 9 counties and zones

Multiple severe thunderstorms moved east through the area, producing a mix of strong and damaging winds and large hail.

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: 21

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.

Multiple severe thunderstorms moved east through the area, producing a mix of strong and damaging winds and large hail.

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 Glasgow, MT wrote its last area forecast discussion before the first event at Jun 15, 1:51 PM MST, 3 hours 9 minutes earlier.

Area forecast discussion, Jun 15, 1:51 PM MST, 3 hours 9 minutes before

Area Forecast Discussion
National Weather Service Glasgow MT
251 PM MDT Sun Jun 15 2025

.DISCUSSION...

KEY MESSAGES:

- Another round of strong to severe thunderstorms are expected this
  afternoon through tonight, mainly near and south of the
  Missouri River.

- Early summer conditions continue through the week with warm
  temperatures, increased humidity, and chances for afternoon and
  evening thunderstorms.
WEATHER PATTERN OVERVIEW:

A southwest flow aloft with relative deep moisture in place will
continue to keep the area under subtle chances of strong to severe
storms for the next couple days.

Today, a shortwave is expected to eject across the region during
the afternoon to provide large-scale ascent. Southeast low level
flow continues to push higher dewpoints (mid 50s to low 60s) into
eastern Montana, for higher confidence of isolated heavy rain from
thunderstorms along with strong winds and large hail this
afternoon through tonight. Also, a tornado cannot be ruled out.
FORECAST CONFIDENCE & DEVIATIONS:

Average to better than average confidence in severe thunderstorms
probability this afternoon through this evening. Average to below
average confidence for the same after tonight.

Days 1 through 2, I used a hi-res model blend for more detail in
winds and precip probability. Day 3 and beyond: NBM

&&

.AVIATION...

PATTERN: Multiple weather elements are in place to support and
sustain severe thunderstorms for most of eastern Montana during
this TAF cycle, mainly between 21Z and 05Z tonight. The overall
flow pattern will continue, albeit with probably less severe
potential Monday and beyond.

FLIGHT CATEGORIES: VFR to start, then IFR and worse if a
thunderstorm happens to pass directly over a TAF site. Main
concern is 21Z to 05Z. Expect amendments.

WINDS: Generally light and variable, until severe thunderstorms
result in erratic gusty winds in excess of 40 or 50 kts. By Monday
morning, winds will set up from the NW around 10 kts.

&&

.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&

weather.gov/glasgow

The radar

The Glasgow radar (KGGW), 115 km away, was scanning. The volume nearest the first event began at 00:04 UTC.

Open the radar archive at this moment

Event by event

14 thunderstorm wind, 7 hail. Local standard time, as filed.

Thunderstorm Wind, Phillips

When: June 15, 5:00 PM MST
Where: Phillips County, 3.74 mi W of Wagner to 3.16 mi WSW of Wagner
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 48.360, -108.160

Spotter reported pea sized hail, heavy rain, and estimated winds winds of 50 to 60 mph.

Hail, Petroleum

When: June 15, 5:39 PM MST
Where: Petroleum County, 0.69 mi N of Winnett
Measured: 1.75 in hail
Reported by: Law Enforcement
Coordinates: 47.010, -108.350

Hail up to the size of golf balls fell with winds of 30-40 mph.

Hail, Petroleum

When: June 15, 5:45 PM MST
Where: Petroleum County, 4.71 mi E of Winnett to 4.72 mi E of Winnett
Measured: 1.75 in hail
Reported by: Public
Coordinates: 47.000, -108.250

Golfball size hail was reported by Public.

Hail, Petroleum

When: June 15, 5:46 PM MST to 6:01 PM MST
Where: Petroleum County, 6.75 mi SE of Winnett to 7 mi SE of Winnett
Measured: 3.5 in hail
Reported by: Public
Coordinates: 46.930, -108.250

Large hail about 3.5 inches in diameter, lasted for about 15 mins.

Thunderstorm Wind, Phillips

When: June 15, 5:50 PM MST
Where: Phillips County, 1.82 mi SE of Saco
Measured: 51 kt (59 mph) measured gust
Reported by: Department of Highways
Coordinates: 48.451, -107.302

Wind gust occurred at Montana DOT near Saco.

Hail, Petroleum

When: June 15, 5:52 PM MST
Where: Petroleum County, 6.13 mi E of Winnett to 6.35 mi E of Winnett
Measured: 1.5 in hail
Reported by: Public
Coordinates: 47.000, -108.220

Ping pong ball size hail broke windows and damaged vehicles.

Hail, Petroleum

When: June 15, 6:00 PM MST
Where: Petroleum County, 1.17 mi NE of Winnett to 1.29 mi ENE of Winnett
Measured: 2.5 in hail
Reported by: Storm Chaser
Coordinates: 47.010, -108.330

A storm chaser measured multiple hailstones of 2.5 inches in diameter (tennis ball size) with a ruler. Report relayed through social media.

Hail, Valley

When: June 15, 6:30 PM MST
Where: Valley County, 1.15 mi NW of Glasgow to 0.45 mi E of Glasgow
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 48.210, -106.650

Hail to the size of a quarter fell with strong winds.

Hail, Valley

When: June 15, 6:42 PM MST
Where: Valley County, 0.69 mi N of Glasgow to 0.37 mi ESE of Glasgow
Measured: 1.25 in hail
Reported by: Official NWS Observations
Coordinates: 48.210, -106.630

Half dollar size hail was observed by staff at NWS Glasgow MT.

Thunderstorm Wind, Valley

When: June 15, 6:42 PM MST
Where: Valley County, 0.69 mi N of Glasgow to 0.7 mi NE of Glasgow
Measured: 62 kt (71 mph) measured gust
Reported by: ASOS
Coordinates: 48.210, -106.630

ASOS at the Glasgow Airport reported 71 mph wind gust.

Thunderstorm Wind, Garfield

When: June 15, 6:50 PM MST
Where: Garfield County, 11.17 mi ESE of Mosby to 11.14 mi SSW of Lufborough Hill Dot
Measured: 63 kt (72 mph) measured gust
Reported by: Mesonet
Coordinates: 46.940, -107.650

Wind gust reported by mesonet observation southeast of Mosby.

Thunderstorm Wind, Valley

When: June 15, 7:00 PM MST
Where: Valley County, 5.03 mi NNE of Nashua to 5.01 mi NNE of Nashua
Measured: 59 kt (68 mph) measured gust
Reported by: Mesonet
Coordinates: 48.200, -106.320

Wind gust measured by observation equipment 5 miles north-northeast of Nashua.

Thunderstorm Wind, Roosevelt

When: June 15, 7:50 PM MST
Where: Roosevelt County, 3.91 mi NNE of Bredette to 4.11 mi NE of Bredette
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 48.550, -105.260

Wind gust was observed about 4 miles northeast of Bredette (US Climate Reference Network).

Thunderstorm Wind, McCone

When: June 15, 7:52 PM MST
Where: McCone County, 2.41 mi WSW of Ft Peck Lake Handar to 1.79 mi WSW of Ft Peck Lake Handar
Measured: 52 kt (60 mph) measured gust
Reported by: Mesonet
Coordinates: 48.010, -106.400

This was reported by the Handar at the Fort Peck Dam station.

Thunderstorm Wind, Roosevelt

When: June 15, 8:00 PM MST
Where: Roosevelt County, 3.09 mi WNW of Wolf Pt to 2.47 mi WNW of Wolf Pt
Measured: 53 kt (61 mph) measured gust
Reported by: Mesonet
Coordinates: 48.120, -105.710

Reported by a mesonet observation 3 miles northwest of Wolf Point.

Thunderstorm Wind, Valley

When: June 15, 8:18 PM MST
Where: Valley County, 5.37 mi WSW of Glasgow to 5.33 mi WSW of Glasgow
Measured: 65 kt (75 mph) measured gust
Reported by: Mesonet
Coordinates: 48.160, -106.730

Reported by Glasgow SW Montana Climate Office (HydroMet).

Thunderstorm Wind, Roosevelt

When: June 15, 8:20 PM MST
Where: Roosevelt County, Poplar Raws to 0.55 mi NW of Sprole
Measured: 51 kt (59 mph) measured gust
Reported by: RAWS
Coordinates: 48.130, -105.070

Reported by the Poplar RAWS station.

Thunderstorm Wind, Roosevelt

When: June 15, 8:40 PM MST
Where: Roosevelt County, 13.46 mi WNW of Froid to 12.64 mi WNW of Froid
Measured: 57 kt (66 mph) measured gust
Reported by: Public
Coordinates: 48.420, -104.760

Public reported this wind gust on Facebook.

Thunderstorm Wind, Richland

When: June 15, 8:45 PM MST
Where: Richland County, 18.8 mi NNW of Enid to 18.48 mi NNW of Enid
Measured: 52 kt (60 mph) measured gust
Reported by: Mesonet
Coordinates: 47.950, -104.940

Reported at the Badger Creek station.

Thunderstorm Wind, Dawson

When: June 15, 9:16 PM MST
Where: Dawson County, 1.4 mi W of Bloomfield to 0.43 mi WSW of Bloomfield
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 47.420, -104.960

Reported at the Bloomfield, MT station.

Thunderstorm Wind, Wibaux

When: June 15, 11:00 PM MST
Where: Wibaux County, 9.49 mi W of Carlyle to 9.29 mi W of Carlyle
Measured: 52 kt (60 mph) measured gust
Reported by: Department of Highways
Coordinates: 46.650, -104.230

Reported at the Ash Creek MT DOT station.

What these are

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.
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

Every storm in Montana in 2025 Every state in 2025 This day in weather history Warnings in Montana, June 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 2026-09-24. Each event’s entry at NCEI: 1254029, 1254017, 1254019, 1254023, 1254032, 1254020, 1254022, 1254024, 1254025, 1254033, 1254034, 1254035, 1254036, 1254037, 1254038, 1254039, 1254040, 1254042, 1254043, 1254045, 1254047.