Live snowpack across the country.

# Arctic Alaska Poised for Significant Snowfall as Lower 48 Sees Scattered Activity

Snow enthusiasts looking for the most substantial accumulations should turn their attention northward to Alaska's Arctic region, where a potent weather system is forecast to deliver impressive totals over the next 48 hours. Imnaviat Creek leads the forecast with an expected 6 inches of new snow accompanied by rain/snow mix and areas of fog, while Atigun Pass—the highest point along the Dalton Highway at 4,739 feet elevation—is projected to receive 4 inches amid challenging conditions including freezing fog and scattered precipitation. Meanwhile, the Lower 48 has seen modest activity, with both Sawmill Ridge in Washington's Cascade Range and Vallecito in Colorado's San Juan Mountains recording 2 inches over the past 24 hours.

The contrast between current conditions and the forecast is striking. Washington's Sawmill Ridge, sitting at a robust 170-inch base depth, received its 2 inches under hazy conditions with thunderstorms threatening—an unusual combination that speaks to the atmospheric instability affecting the Pacific Northwest. Colorado's Vallecito presents a more concerning picture with only a 3-inch base despite the fresh accumulation, as shower and thunderstorm activity continues to pummel the region. These thundersnow events, while dramatic, often produce wet, heavy snow that can be both a blessing for base-building and a curse for avalanche conditions.

The real story, however, unfolds along Alaska's North Slope where the convergence of maritime moisture and Arctic air masses is creating ideal snow-producing conditions. Imnaviat Creek's 6-inch forecast represents significant accumulation for this remote region, particularly given the existing 2-inch base. The accompanying fog will create treacherous visibility for any researchers or workers along the Dalton Highway corridor. Atigun Pass, a critical transportation artery for North Slope oil operations, faces particularly hazardous conditions with freezing fog potentially coating surfaces with rime ice beneath fresh snow. Even Prudhoe Bay, typically dominated by rain at sea level, expects 2 inches as temperatures hover near freezing. For snow researchers and enthusiasts seeking the most dynamic winter weather currently unfolding across the nation, Alaska's Brooks Range and North Slope region undoubtedly claim top billing this cycle.