The combination of CAPE, minimal SHEAR, and dew point depressions of 30-40 degrees led to a thunderstorm being able to produce severe winds.
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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.
The combination of CAPE, minimal SHEAR, and dew point depressions of 30-40 degrees led to a thunderstorm being able to produce severe winds.
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 Missoula, MT wrote its last area forecast discussion before the first event at Jul 15, 12:54 PM MST, 2 hours 36 minutes earlier.
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</html>The Missoula radar (KMSX), 134 km away, was scanning. The volume nearest the first event began at 22:29 UTC.
1 thunderstorm wind. Local standard time, as filed.
A weather station near I-90, just east of Anaconda measured a wind gust of 64 mph from a thunderstorm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2022Every state in 2022This day in weather historyWarnings in Montana, July 2022
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: 1044820.