Circulation around a deep upper low over South Dakota brought cooler air and abundant moisture to Blaine County during the morning and afternoon hours of 25 April. Snow, heavy at times, developed over the area with 8 to 10 inches reported some locations.
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 TFX wrote it up.
Circulation around a deep upper low over South Dakota brought cooler air and abundant moisture to Blaine County during the morning and afternoon hours of 25 April. Snow, heavy at times, developed over the area with 8 to 10 inches reported some locations.
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 Great Falls, MT wrote its last area forecast discussion before the first event at Apr 25, 6:45 AM MST, 0 minutes earlier.
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</html>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
712 AM MDT MON APR 25 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0709 AM SNOW 7 SE ROCKY BOY 48.18N 109.69W
04/25/2016 E6.0 INCH HILL MT TRAINED SPOTTER
WET SNOW...STILL SNOWING
&&
MWM1 winter storm. Local standard time, as filed.
Nine inches of snow fell at Fort Belknap. Heavy wet snow fell across much of Blaine County. NorthWestern Energy reported 50 homes were without power due to downed power lines. Additionally, a semi-tractor trailer jackknifed on U.S. Highway 2, blocking both lanes of traffic.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2016Every state in 2016This day in weather historyWarnings in Montana, April 2016
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: 621669.