Snow developed across central Idaho as a closed low moved into the region.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
Snow developed across central Idaho as a closed low moved into the region.
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 Apr 11, 2:03 PM PST, 57 minutes earlier.
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</html>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1106 AM MDT MON APR 11 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 AM HEAVY SNOW 1 NNW KILA 48.13N 114.47W
04/11/2022 E8.0 INCH FLATHEAD MT PUBLIC
OVERNIGHT SNOWFALL.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1122 AM MDT MON APR 11 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 AM SNOW KALISPELL 48.20N 114.32W
04/11/2022 E5.0 INCH FLATHEAD MT PUBLIC
OVERNIGHT SNOWFALL. TWITTER REPORT.
&&The national radar mosaic for the moment the first event began.
4 winter storm. Local standard time, as filed.
Heavy snow was observed across the southern Clearwater Mountains, with 9.4 inches of snow being reported in Dixie.
The Idaho County Sherriff's Office reported low visibility in heavy snow and blowing snow on US 95 over Whitebird Hill and advised citizens to stay home if possible. US 95 was closed over Whitebird Hill due to an accident.
The Idaho County Sherriff's Office reported low visibility in snow and blowing snow in the Grangeville area and encouraged citizens to avoid unnecessary travel. Chains were recommended for travelers heading for Whitebird Hill. Six inches of snow was observed in Grangeville.
Heavy snow in Salmon led to school closures on April 12th. Five inches of snow was reported in nearby Carmen.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2022Every state in 2022This day in weather historyWarnings in Idaho, April 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: 1020912, 1020909, 1020911, 1020910.