A Pacific system brought snow to the Treasure Valley along with gusty winds. Downsloping winds brought gusts up to 50 mph with hazardous driving conditions at times.
Every event with a place to put it; 2 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 Pacific system brought snow to the Treasure Valley along with gusty winds. Downsloping winds brought gusts up to 50 mph with hazardous driving conditions at times.
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 Feb 5, 9:37 PM MST, 2 hours 23 minutes earlier.
Area Forecast Discussion National Weather Service Boise ID 937 PM MST Wed Feb 5 2025 .DISCUSSION...Light snow showers will continue overnight, mainly over the mountains. A trough off the CA coast will move inland late Thursday, with snow developing across eastern OR during the late afternoon and southwest Idaho around midnight on Friday morning. The system is trending farther north and west with the past few runs which would focus the heaviest precipitation across central and eastern OR, with light amounts in southwest Idaho. The center of the trough is forecast to move across eastern OR toward McCall by midday Friday, which would keep precipitation shadowing and strong southwest flow aloft over the Idaho zones until the system passes. This set up does not favor much snow in the Treasure or Magic Valley, with generally less than an inch. To the northwest of the center of the system, precipitation will be heavier across eastern OR. After the center of the trough passes northeast, wrap around moisture will cause snow showers to form over the central ID mountains and possibly Boise. Windy conditions expected on Friday afternoon with west- northwest winds 25-35 mph with gusts up to 45 mph possible. No updates to the forecast. && .AVIATION...Mainly VFR. Isolated snow showers creating MVFR/IFR for northeast OR and w-central ID. Precipitation becoming widespread late Thurs, with snow levels at/near valley floors. Mountain obscuration. Surface winds: SE-SW 5-15 kt. Winds aloft at 10kft MSL: SW-W 20-30 kt. KBOI...VFR. A 10% chance of light snow or flurries at terminal overnight. Surface winds: E-SE 5-15 kt. && .PREV DISCUSSION... SHORT TERM...Tonight through Friday night...The primary focus remains on the approaching Pacific storm system, set to bring snow from Thursday evening into Friday. This system has the potential to impact the Friday morning commute, particularly north of a Burns-Ontario-Stanley line. This afternoon, mostly clear skies persist between systems. However, a weak shortwave currently moving inland across Washington and Oregon will continue eastward, bringing a 30% chance of light snow showers, mainly affecting Baker County and the West Central Mountains of Idaho. A slight chance (15%) of snow showers exists for the Lower Treasure Valley between 5 PM and midnight, though no accumulations are expected. The next storm system is forecast to arrive Thursday evening into Friday. Recent guidance maintains the trend of a warm front lifting northward early Friday, concentrating most precipitation north of the front by mid-morning. This setup favors light to moderate snowfall potential along and north of a Burns-Ontario-Stanley line. However, the latest guidance favors a further northward shift of the warm front, reducing expected snowfall amounts from the Upper Treasure Valley through the Western Magic Valley, Owyhee Mountains, and southern Highlands. The combination of a quicker warm frontal passage, lower QPF totals, and a strong low-level jet (50-75 kt) supporting warmer surface temperatures has decreased snowfall probabilities for the above-mentioned areas. Probabilistic guidance from both the NBM and HREF now suggests only a 30% chance of snowfall exceeding 1 inch in these areas. Given this downward trend in snowfall expectations over the past two model cycles, no winter weather headlines have been issued at this time. Currently, we have 1 to 2 inches along US-20 from Burns to Ontario, the I-84 corridor from Ontario to Baker City, and US-95 from Ontario to Council and 4 to 6 inches in mountain valleys, with up to 10 inches at higher elevations. Up to half an inch in the Upper Treasure Valley, though accumulation on road surfaces may be limited due to above- freezing temperatures. Following the cold frontal passage, strong winds could develop across south-central Idaho on Friday, with a 30% chance of reaching wind advisory criteria. Snow will taper off Friday evening as the cold front moves through, with colder temperatures possible depending on lingering snow cover and the establishment of northerly flow across the region. LONG TERM...Saturday through Wednesday...An upper level trough will reside over the region Saturday through early next week with shortwave troughs embedded in the flow. This will keep a cold northwest flow over the area resulting in well below normal temperatures. Northern mountain areas will have about a 20-30% chance of snow each day in this pattern with dry conditions prevailing elsewhere. By the middle of next week the models are less consistent with some showing the upper level pattern shifting to a more active westerly flow off the Pacific. Lots of uncertainty that far out. The forecast will reflect a slight upward trend in temperatures by the middle of next week with increased chances of precipitation/snow as below normal temperatures continue. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.twitter.com/NWSBoise DISCUSSION...KA AVIATION.....SH SHORT TERM...JDS LONG TERM....TL
The national radar mosaic for the moment the first event began.
2 winter weather. Local standard time, as filed.
Several NWS Employees and members of the public reported snow totals from 4-7 inches in the Boise, Kuna, and Garden City area.
Members of the public reported 5 to 7 inches of snow in the Long Valley, with higher amounts near Cascade, ID.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2025Every state in 2025This day in weather historyWarnings in Idaho, February 2025
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: 1239827, 1239828.