Boise, Idaho – Mountain travel across central and southwest Idaho is expected to become increasingly hazardous beginning Tuesday afternoon as a stronger round of snow develops, bringing heavy accumulations and blowing snow through Wednesday evening. Drivers heading into higher terrain should prepare for rapidly deteriorating road conditions.
According to the National Weather Service in Boise, light snow will continue through Tuesday morning before intensifying later in the day as a more organized system moves in. Moderate to heavy snow is expected from Tuesday afternoon through Wednesday evening, with mountain valleys picking up 3 to 10 inches of snow. Higher elevations above 6,000 feet could see 10 to 20 inches by the time snow tapers.
Gusty winds accompanying the snowfall will lead to localized blowing and drifting snow, further reducing visibility on mountain highways and passes. Travel through areas such as the West Central Mountains, Boise Mountains, and higher terrain along key routes could become difficult to dangerous, especially Tuesday night and early Wednesday.
Lower elevations, including the Treasure Valley, are expected to see minimal impacts compared to the mountains, but changing conditions in nearby passes could still affect travel and commerce. Emergency officials urge travelers to delay non-essential mountain trips, carry winter survival gear, and check Idaho 511 for the latest road conditions.
Snow is expected to gradually ease late Wednesday, but winter driving conditions may linger in the mountains even after precipitation ends. Additional advisories or warnings may be issued as snowfall increases.
