U.S. Snow Report Today

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

Snow enthusiasts looking for the most promising conditions over the next 48 hours should turn their attention northward to Alaska's remote interior, where a potent system is forecast to deliver substantial accumulations across the Brooks Range. Imnaviat Creek leads the forecast with an impressive 6 inches expected, while Atigun Pass—the iconic Dalton Highway crossing—anticipates 4 inches amid challenging conditions of freezing fog and mixed precipitation. Meanwhile, the Lower 48 has seen only modest activity over the past 24 hours, with Washington's Sawmill Ridge and Colorado's Vallecito each recording 2 inches of fresh snow, though both locations face transitioning weather patterns that may limit additional accumulation.

The contrast between Alaska's incoming snow event and conditions farther south is striking. Sawmill Ridge in Washington's Cascade Range, sitting at a healthy 170-inch base, reported 2 inches overnight but faces an unusual summer-like pattern with haze and potential thunderstorms threatening to curtail any meaningful snowpack building. Similarly, Colorado's Vallecito in the San Juan Mountains added 2 inches to a meager 3-inch base, but the forecast calls for showers and thunderstorms rather than continued snow—a disappointment for researchers tracking early-season snowpack development in this critical headwaters region.

These transitional conditions suggest the Lower 48 is experiencing unsettled spring-like weather rather than sustained winter systems.

Alaska's Brooks Range, however, presents the most compelling story for snow enthusiasts. The Imnavait Creek observation site, positioned in the remote tundra at 68.6°N latitude, is forecast to receive the heaviest snowfall in the nation with 6 inches accompanied by areas of fog and mixed rain-snow conditions. Just south, Atigun Pass—a vital transportation corridor and frequent target for extreme weather—expects 4 inches with particularly treacherous freezing fog creating whiteout conditions for travelers on the haul road.

Even Prudhoe Bay on the Arctic Ocean coast anticipates 2 inches, though increasing temperatures may transition the precipitation to rain. For snow researchers, this Arctic system represents a significant late-season event that could provide valuable data on snowpack persistence and melt dynamics in the Far North, where climate change impacts are most pronounced.