Hail, Petroleum
- When
- July 29, 10:00 PM MST
- Where
- Petroleum County, 5.53 mi S of Winnett
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 46.920, -108.350
The public reported hail up to the size of quarters.
Hail and Damaging Winds in Montana, July 29 to 30, 2023
A cold front moved through northeast Montana producing strong to severe thunderstorms.
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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 3
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.
A cold front moved through northeast Montana producing strong to severe thunderstorms.
The radar
The Billings radar (KBLX), 120 km away, was scanning. The volume nearest the first event began at 05:01 UTC.
Event by event
2 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Valley
- When
- July 29, 10:44 PM MST
- Where
- Valley County, King Coulee Raws
- Measured
- 53 kt (61 mph) measured gust
- Reported by
- RAWS
- Coordinates
- 47.800, -107.020
The King Coulee RAWS site (KIGM8) measured a 61 mph thunderstorm wind gust.
Thunderstorm Wind, Valley
- When
- July 30, 1:45 AM MST
- Where
- Valley County, 0.83 mi SSE of Saint Marie
- Measured
- 53 kt (61 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 48.410, -106.510
The Saint Marie Marco Mesonet Site (07MT) measured a 61 mph thunderstorm wind gust.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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
- Damaging Winds in Virginia, July 29, 2023
- Damaging Winds in Kentucky, July 29, 2023
- Damaging Winds in Maryland, July 29, 2023
- Damaging Winds in District of Columbia, July 29, 2023
- Heat in Nevada, July 29, 2023
- Rip Current in Indiana, July 29, 2023
- Rip Current in Wisconsin, July 29, 2023
- Wildfire in Washington, July 29 to 31, 2023
- Tornado and Damaging Winds in Nebraska, July 29, 2023
- Damaging Winds in Illinois, July 29, 2023
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, July 29, 2023
- Damaging Winds in Ohio, July 29, 2023
More
Every storm in Montana in 2023Every state in 2023This day in weather historyWarnings 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: 1105801, 1105806, 1105809.