A strong jet stream ushered a very moist plume of moisture over western Montana. Precipitation amounts of one to four inches fell over the Bitterroot Mountains, causing flash flooding in the lower terrain.
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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 strong jet stream ushered a very moist plume of moisture over western Montana. Precipitation amounts of one to four inches fell over the Bitterroot Mountains, causing flash flooding in the lower terrain.
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 Nov 12, 7:33 PM MST, 2 hours 27 minutes earlier.
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</html>The Missoula radar (KMSX), 74 km away, was scanning. The volume nearest the first event began at 04:57 UTC.
2 flash flood. Local standard time, as filed.
Ravalli County Road Department reported wash-outs on Middle Bear Creek Rd. (SW of Victor), Pleasant View Dr. (W of Victor), and Red Crow Rd. (SW of Victor).
Ravalli County Road Department reported wash-outs on West Side Rd. (SW of Hamilton), West Hills Way (NW of Hamilton), and Camas Creek Loop (SW of Hamilton).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2008Every state in 2008This day in weather historyWarnings in Montana, November 2008
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 2026-09-24. Each event’s entry at NCEI: 137948, 137955.