An approaching low pressure trough from the west combined with a very unstable atmosphere over these two days to produce a few isolated severe thunderstorms.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS GGW wrote it up.
An approaching low pressure trough from the west combined with a very unstable atmosphere over these two days to produce a few isolated severe thunderstorms.
The Glasgow radar (KGGW), 127 km away, was scanning. The volume nearest the first event began at 06:47 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
A 63 mph wind gust was recorded at the Malta South US-191 DOT site (MTMAL).
Trained spotter reported hail up to the size of quarters.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2019Every state in 2019This day in weather historyWarnings in Montana, July 2019
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: 841818, 841817.