A springtime snow storm cut across the Rocky Mountains and southern Montana on April 12th and 13th. This storm brought nearly a foot of snow to Petroleum County and up to 6 inches across portions of Garfield, McCone, Dawson, and Wibaux counties.
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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.
A springtime snow storm cut across the Rocky Mountains and southern Montana on April 12th and 13th. This storm brought nearly a foot of snow to Petroleum County and up to 6 inches across portions of Garfield, McCone, Dawson, and Wibaux counties.
The national radar mosaic for the moment the first event began.
5 winter storm. Local standard time, as filed.
The winter storm had the greatest impact on Petroleum County, with cooperative observers reporting 8 to 10 inches of snow across the area, the majority of which fell from shortly during the morning of April 13th.
Along with a snowfall report of 2 new inches from a cooperative observer in Terry, Montana Department of Transportation road reports showed treacherous travel conditions along area highways due to snowy and icy conditions from approximately 11 PM MDT, which persisted through the early morning hours.
Along with a snowfall report of 5 new inches from a cooperative observer at Wibaux 2 E, the Montana Department of Transportation road reports showed treacherous travel conditions along area highways due to snowy and icy conditions from approximately 11 PM MDT, which persisted through the early morning hours.
This storm brought 4 to 6 inches of snowfall to much of Dawson County, most of which fell on the morning of April 13th. The highest snowfall amount in Dawson County was reported by a cooperative observer in Lindsay, who measured 6.4 inches of new snow.
Three to five inches of snow fell across Garfield County on the morning of April 13th, mainly along and south of Highway 200. By 7 AM MDT, Montana Department of Transportation road reports showed treacherous driving conditions along Highway 200 due to snowy and icy conditions.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2018Every state in 2018This day in weather historyWarnings in Montana, April 2018
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: 747441, 747445, 747446, 747443, 747444.