A left moving supercell thunderstorm dropped large hail across multiple towns in southern portions of the Bitterroot Valley.
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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 MSO wrote it up.
A left moving supercell thunderstorm dropped large hail across multiple towns in southern portions of the Bitterroot Valley.
The Missoula radar (KMSX), 89 km away, was scanning. The volume nearest the first event began at 02:27 UTC.
1 hail. Local standard time, as filed.
Quarter to ping-pong-sized hail was reported in Hamilton. Quarter-sized hail was also reported in Corvallis.
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: 832817.