U.S. Snow Report Today

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

Snow enthusiasts looking for meaningful accumulation should turn their attention northward to Alaska's North Slope, where a potent weather system is poised to deliver impressive totals over the next 48 hours. While the Lower 48 has recorded only modest snowfall in the past day—with Sawmill Ridge in Washington's Cascades and Vallecito in Colorado's San Juan Mountains each reporting 2 inches—the real story is unfolding along Alaska's remote Dalton Highway corridor, where winter conditions are arriving with authority despite the transitional season.

Imnaviat Creek, located in the Brooks Range at 68.6°N latitude, is forecast to receive 6 inches of new snow accompanied by rain-snow mix and areas of fog, making it the nation's snowfall leader for the forecast period. Just 35 miles south, Atigun Pass—the highest highway pass in Alaska at 4,739 feet elevation—is expected to collect 4 inches amid challenging conditions featuring freezing fog and scattered precipitation. These totals are particularly notable given the minimal existing base depths of just 1-2 inches, suggesting this system represents the season's first substantial accumulation event for the region.

Even Prudhoe Bay on the Arctic coast, typically drier due to its proximity to the Beaufort Sea, could see 2 inches as rain transitions to snow.

The contrast between Alaska's robust forecast and the scattered activity elsewhere is striking. Washington's Sawmill Ridge in the Central Cascades, sitting at 170 inches base depth, received its 2-inch addition amid hazy conditions with afternoon thunderstorm potential—a typical late-spring pattern for the region. Meanwhile, Colorado's Vallecito in the southwestern mountains added 2 inches to a meager 3-inch base, with shower and thunderstorm activity dominating rather than pure snowfall.

For researchers tracking seasonal snow patterns, Alaska's North Slope activity is particularly interesting as it signals the early establishment of the Arctic snowpack, while the Lower 48 locations are experiencing the tail end of their snow seasons with convective-driven events rather than synoptic-scale winter storms. The blustery, fog-shrouded conditions along the Dalton Highway will create challenging but quintessentially Arctic snow conditions over the coming days.