Southwesterly flow aloft enhanced moisture that produced strong thunderstorms in portions of northeast Montana. Heavy rain from these storms led to some flash flooding.
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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 GGW wrote it up.
Southwesterly flow aloft enhanced moisture that produced strong thunderstorms in portions of northeast Montana. Heavy rain from these storms led to some flash flooding.
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 Glasgow, MT wrote its last area forecast discussion before the first event at Jun 26, 1:45 PM MST, 25 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
An emergency manager in Prairie County reported heavy rainfall caused water to flow over Interstate 94 at mile marker 181.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2023Every state in 2023This day in weather historyWarnings in Montana, June 2023
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 2026-09-30. Each event’s entry at NCEI: 1099071.