Live snowpack across the country.

# Arctic Alaska Poised for Significant Snowfall as Northern Tier Sees Light Activity

A modest weather pattern is bringing scattered snowfall across the nation, with the most significant accumulations expected to shift dramatically northward over the coming days. While Washington's Cascade Range and Colorado's San Juan Mountains recorded 2 inches of fresh snow over the past 24 hours, the real story is unfolding in Alaska's Brooks Range, where forecasters are calling for up to 6 inches of new snow at Imnaviat Creek through Wednesday. This represents a notable event for Alaska's far north, where autumn snowfall is building the foundation for what could be a promising winter season.

The recent 24-hour period saw modest but welcome additions at two monitoring stations in the Lower 48. Sawmill Ridge in Washington's Cascades, sitting at an impressive 170-inch base depth, picked up 2 inches amid hazy conditions with thunderstorms threatening the region—an unusual late-season combination. Meanwhile, Vallecito in Colorado's southwestern mountains also received 2 inches, though working from a considerably thinner 3-inch base as the season slowly builds momentum. Both locations face active weather patterns with continued storm chances, suggesting these measurements may be just the beginning of more sustained snowfall events.

The forecast focus, however, belongs entirely to Alaska's North Slope region, where a potent system is bringing wintry conditions well above the Arctic Circle. Imnaviat Creek leads the charge with 6 inches expected, accompanied by rain-snow mix and dense fog that will create treacherous conditions along the Dalton Highway corridor. Nearby Atigun Pass, the highest point on Alaska's famed "haul road," should receive 4 inches amid freezing fog and mixed precipitation—critical information for truckers servicing the oil fields. Even Prudhoe Bay on the Arctic Ocean coast could see 2 inches, though temperatures may be marginal enough to introduce rain into the mix. This early-season activity in the Arctic is particularly noteworthy, as these accumulations will contribute to the vital snowpack that influences everything from wildlife migration patterns to industrial operations. For snow enthusiasts tracking early-season developments, Alaska's Brooks Range is undoubtedly where the action is happening this week.