Live snowpack across the country.

# Arctic Alaska Braces for Significant Snowfall as Lower 48 Sees Modest Activity

Snow enthusiasts looking for the most impactful winter weather over the next 48 hours should turn their attention northward to Alaska's Brooks Range, where a potent system is poised to deliver the nation's most significant accumulations. While the Lower 48 has seen modest snowfall in isolated mountain locations—with 2 inches reported at both Sawmill Ridge in Washington's Cascades and Vallecito in Colorado's San Juan Mountains over the past 24 hours—the real story is unfolding along Alaska's North Slope, where forecasters are calling for up to 6 inches of new snow combined with challenging conditions including freezing fog and mixed precipitation.

The epicenter of incoming snowfall will be Imnaviat Creek in Alaska's remote Brooks Range, where 6 inches of accumulation is forecast amid rain/snow mix and areas of fog. This represents the heaviest projected snowfall across the entire nation for the next two days. Just to the south, Atigun Pass—a critical transportation corridor along the Dalton Highway that serves as a lifeline to Prudhoe Bay's oil fields—is expecting 4 inches of snow with areas of freezing fog transitioning to scattered rain and snow showers. These conditions will create treacherous travel for truckers navigating this already-challenging alpine route at 4,800 feet elevation. Even Prudhoe Bay itself, situated on the Arctic Ocean coast, may see 2 inches as the system pushes northward, though the forecast suggests a transition to rain as marginally warmer air infiltrates the region.

The contrast between Alaska's active pattern and the relatively quiet conditions elsewhere is striking. Washington's Sawmill Ridge, located in the central Cascades near popular ski areas like Snoqualmie Pass and Stevens Pass, received 2 inches but faces a concerning forecast of haze followed by thunderstorms—hardly ideal for powder seekers. Similarly, Colorado's Vallecito area near Wolf Creek Ski Resort picked up 2 inches before thunderstorm activity is expected to dominate. For researchers and snow enthusiasts tracking accumulation patterns, Alaska's North Slope clearly emerges as the nation's most active zone, with the Brooks Range positioned to receive the most substantial and persistent snowfall through midweek.