Hail and Damaging Winds in Montana, July 30, 2023

Name: Hail and Damaging Winds in Montana, July 30, 2023
Start: 2023-07-30T15:10
End: 2023-07-30T23:01
Location: Montana

July 30, 2023 · NWS GGW · 19 events in 5 counties and zones

Afternoon surface heating combined with an embedded disturbance, which generated multiple strong to severe thunderstorms which lasted into the nighttime hours.

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: 19

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.

Afternoon surface heating combined with an embedded disturbance, which generated multiple strong to severe thunderstorms which lasted into the nighttime hours.

The radar

The Glasgow radar (KGGW), 24 km away, was scanning. The volume nearest the first event began at 22:11 UTC.

Open the radar archive at this moment

Event by event

15 thunderstorm wind, 4 hail. Local standard time, as filed.

Thunderstorm Wind, Valley

When: July 30, 3:10 PM MST
Where: Valley County, 0.69 mi S of Saint Marie
Measured: 61 kt (70 mph) measured gust
Reported by: Mesonet
Coordinates: 48.410, -106.520

The Saint Marie Marco Mesonet site (07MT) measured a 70 mph thunderstorm wind gust.

Thunderstorm Wind, Roosevelt

When: July 30, 3:19 PM MST
Where: Roosevelt County, 0.83 mi SSW of Wolf Pt Intl Airport(Kolf)
Measured: 79 kt (91 mph) measured gust
Reported by: ASOS
Coordinates: 48.090, -105.580

The Wolf Point Airport (KOLF) ASOS measured a 91 mph thunderstorm wind gust. The instrument failed after this observation.

Thunderstorm Wind, Valley

When: July 30, 3:34 PM MST
Where: Valley County, 6.58 mi WSW of Lustre
Measured: 55 kt (63 mph) measured gust
Reported by: Trained Spotter
Coordinates: 48.340, -106.030

A trained spotter measured a 63 mph thunderstorm wind gust.

Thunderstorm Wind, Valley

When: July 30, 3:35 PM MST
Where: Valley County, 8.95 mi SW of Lustre
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 48.290, -106.040

The public reported some siding had blown off the side of a house. It was also reported that a tree wind break had blown down.

Hail, Valley

When: July 30, 3:40 PM MST
Where: Valley County, 8.05 mi SW of Lustre
Measured: 1 in hail
Reported by: Public
Coordinates: 48.310, -106.040

The public reported, via Facebook, hail up to the size of quarters.

Thunderstorm Wind, Roosevelt

When: July 30, 4:10 PM MST
Where: Roosevelt County, 0.83 mi SSW of Wolf Pt
Measured: 70 kt (81 mph) estimated gust
Reported by: NWS Employee
Coordinates: 48.090, -105.660

A NWS employee reported the hardcover on the bed of his pickup truck lifted into the back window, causing damage. Wind gusts were estimated at 80 mph.

Thunderstorm Wind, Roosevelt

When: July 30, 4:15 PM MST
Where: Roosevelt County, 0.83 mi SSE of Wolf Pt
Measured: 78 kt (90 mph) estimated gust
Reported by: Public
Coordinates: 48.090, -105.640

The public reported, via Facebook, downed power poles and trees. A crosswalk light near the Northside Elementary school, was also blown over.

Hail, Roosevelt

When: July 30, 4:16 PM MST
Where: Roosevelt County, 0.83 mi SSE of Wolf Pt
Measured: 1 in hail
Reported by: Public
Coordinates: 48.090, -105.640

The public reported, via Facebook, hail up to the size of quarters.

Thunderstorm Wind, Roosevelt

When: July 30, 4:19 PM MST
Where: Roosevelt County, 0.83 mi SSW of Wolf Pt Intl Airport(Kolf)
Measured: 79 kt (91 mph) measured gust
Reported by: ASOS
Coordinates: 48.090, -105.580

The Wolf Point Airport (KOLF) ASOS station recorded a 91 mph thunderstorm wind gust. |This was the last observation before the wind instrument failed.

Thunderstorm Wind, Roosevelt

When: July 30, 4:20 PM MST
Where: Roosevelt County, 0.92 mi W of Wolf Pt Intl Airport(Kolf)
Measured: 70 kt (81 mph) estimated gust
Reported by: Public
Coordinates: 48.100, -105.590

The public reported that several large trees were down.

Thunderstorm Wind, Roosevelt

When: July 30, 4:20 PM MST
Where: Roosevelt County, 0.46 mi E of Wolf Pt
Measured: 70 kt (81 mph) estimated gust
Reported by: Public
Coordinates: 48.100, -105.640

The public reported a 6 to 10 inch russian olive tree snapped off at the base of the trunk.

Hail, Richland

When: July 30, 5:15 PM MST
Where: Richland County, 10.54 mi NNW of Enid
Measured: 1 in hail
Reported by: Public
Coordinates: 47.840, -104.870

The public reported hail up to the size of quarters.

Thunderstorm Wind, Daniels

When: July 30, 5:15 PM MST
Where: Daniels County, 66.96 mi S of Navajo
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 47.840, -104.870

The public reported that their neighbors horse trailer had been blown over.

Thunderstorm Wind, Richland

When: July 30, 6:00 PM MST
Where: Richland County, 2.12 mi SSE of Lambert
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 47.650, -104.610

A trained spotter estimated a 60 mph thunderstorm wind gust.

Hail, Dawson

When: July 30, 6:15 PM MST
Where: Dawson County, 17.8 mi NE of Bloomfield
Measured: 1.5 in hail
Reported by: Public
Coordinates: 47.570, -104.620

The public reported hail up to the size of ping pong balls.

Thunderstorm Wind, Dawson

When: July 30, 6:15 PM MST
Where: Dawson County, 17.8 mi NE of Bloomfield
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 47.570, -104.620

The public reported an estimated 60 mph thunderstorm wind gust.

Thunderstorm Wind, Valley

When: July 30, 10:30 PM MST
Where: Valley County, 0.69 mi S of Saint Marie
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 48.410, -106.520

The Saint Marie Marco Mesonet Site (07MT) measured a 62 mph thunderstorm wind gust.

Thunderstorm Wind, Valley

When: July 30, 10:33 PM MST
Where: Valley County, Glasgow Intl Airport (Kggw)
Measured: 54 kt (62 mph) measured gust
Reported by: ASOS
Coordinates: 48.220, -106.620

The Glasgow Airport ASOS (KGGW) measured a 62 mph thunderstorm wind gust.

Thunderstorm Wind, Valley

When: July 30, 11:01 PM MST
Where: Valley County, 8.08 mi SSW of Lustre
Measured: 70 kt (81 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 48.270, -105.960

A trained spotter estimated a thunderstorm wind gust of 80 mph.

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 2023 Every state in 2023 This day in weather history Warnings in Montana, July 2023

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: 1105810, 1105816, 1105817, 1105818, 1105839, 1105840, 1105841, 1105842, 1109044, 1109153, 1109155, 1109159, 1109162, 1109157, 1109036, 1109038, 1109185, 1109204, 1109209.