A strong cold front brought heavy snow and high winds to the West Central and Boise Mountains and higher elevations throughout southwest Idaho.
Every event with a place to put it; 7 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 BOI wrote it up.
A strong cold front brought heavy snow and high winds to the West Central and Boise Mountains and higher elevations throughout southwest Idaho.
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 Boise, ID wrote its last area forecast discussion before the first event at Apr 2, 7:46 PM MST, 4 hours 14 minutes earlier.
Area Forecast Discussion National Weather Service Boise ID 846 PM MDT Sat Apr 2 2022 .DISCUSSION...Winds have already subsided this evening and will become light in all areas by midnight. Dry weather prevails through Sunday with a westerly flow aloft. Temperatures will be warmer (around 5 degrees above normal) on Sunday. Gusty winds return Sunday afternoon with breezy conditions anticipated for much of the area. No updates. && .AVIATION...VFR. Mostly clear overnight. Increasing high and mid level clouds on Sunday. Surface winds: W to NW 5-15 kts decreasing to 10 kts or less by 06z, becoming E to SW 5-15 kts on Sunday. Winds aloft at 10k feet MSL: W to NW 15-25 kts. && .PREV DISCUSSION... SHORT TERM...Tonight through Sunday night...Moisture over the central mountains will continue to weaken this afternoon, with lingering snowfall tapering off. Building northwest flow will bring mostly dry and mild conditions on Sunday with temperatures warming a few more degrees. Another round of gusty wind anticipated across southeastern Oregon and into the Treasure Valley on Sunday afternoon and evening, with gusts of 20 to 30 mph in the forecast. Elsewhere could see gusts of 10 to 20 mph through the same time-frame. An approaching trough will bring an introduction of snowfall across the higher elevations of Baker County and portions of the West Central Mountains for late Sunday night. LONG TERM...Monday through Saturday...A powerful upper level trough will move through the Pacific Northwest on Monday. Strong westerly flow aloft, with winds of 50-70 kt at 10kft, will arrive Monday morning. Very gusty winds at the surface will arrive by Monday afternoon, especially across southeast Oregon where gusts of 40-50 mph will be common with occasional gusts of 50-60 mph. Winds will also be gusty on the Idaho side, especially in the higher terrain and south of the Snake River, but not as strong as across Oregon. Wind headlines will likely be needed in later forecasts. Gusty winds will continue through the Upper Treasure and Magic valleys on Tuesday as winds decrease elsewhere. This storm system will also be accompanied by a surge of moisture, with precipitable water values reaching around the 90th percentile for early April. The combination of strong westerly flow and moisture will result in significant orographic enhancement of precipitation in the mountains, with much less expected in the lower elevations across southern Idaho and eastern Oregon. Snow levels will start out Monday morning around 4000 feet, rising to 5000-6000 feet by Monday afternoon. This should allow locations like McCall to see accumulating snow Monday morning before switching over to a rain/snow mix in the afternoon. The best chance of rain across the Treasure Valley will be Monday morning as the moisture surge peaks, but amounts will be light. A cold front Monday evening will lower snow levels to around 3000 feet, but precipitation will be on the decrease. A chance of snow will continue in the mountains on Tuesday with additional light accumulations. Snowfall totals Monday through Tuesday in the mountains should range from 6 to 12 inches above 6000 feet. Temperatures Tuesday will be around 10 degrees below normal. An upper ridge will build across the area Wednesday through Friday. Temperatures Wednesday morning will drop below freezing for all locations. Otherwise, warmer temperatures will develop through Friday, especially Thursday and Friday when lower elevations will reach into the 70s. Ensembles depict another upper trough and cold front moving through the area on Saturday, with gusty conditions and a chance of showers returning. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && www.weather.gov/Boise www.facebook.com/NWSBoise www.twitter.com/NWSBoise DISCUSSION...BW AVIATION.....JT PREV SHORT TERM...KB PREV LONG TERM....ST
The national radar mosaic for the moment the first event began.
4 strong wind, 2 heavy snow, 1 high wind. Local standard time, as filed.
The McCall town center snow stake webcam at 5030 feet MSL reported 2.0 inches of snow.
The Banner Summit SNOTEL measured 10.0 inches of snow at 7040 feet MSL.
The mesonet station at Bearskin Creek measured a wind gust of 51 knots.
The Hammett Hill mesonet station reported a 53 mph gust.
The Obsidian mesonet station measured a gust of 95 mph.
The ASOS at the McCall airport measured a wind gust of 45 knots.
The AWOS at the Mountain Home Air Force Base reported a wind gust of 42 knots.
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: 1016755, 1012657, 1016761, 1016753, 1016759, 1016760, 1016751.