Live snowpack across the country.

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

Snow enthusiasts looking for fresh powder should turn their attention northward to Alaska's Brooks Range, where a potent weather system is poised to deliver the most significant accumulations across the nation over the next 48 hours. While the Lower 48 has experienced modest snowfall—with Sawmill Ridge in Washington's Cascades and Vallecito in Colorado's San Juan Mountains each recording 2 inches over the past 24 hours—the real story is unfolding in Alaska's remote northern territories. Imnaviat Creek leads the forecast with an impressive 6 inches expected, followed by Atigun Pass anticipating 4 inches, as a moisture-laden system collides with arctic air masses across the North Slope.

The current snowfall in Washington's Sawmill Ridge, situated at 170 inches of base depth, represents a typical late-season pattern for the Cascades, though the 2-inch addition comes with an unusual forecast calling for thunderstorms following hazy conditions—a testament to the region's transitional spring weather. Meanwhile, Colorado's Vallecito sits at a concerning 3-inch base with similar convective activity predicted, suggesting the southern Rockies remain in a frustratingly dry pattern for ski resort operators and backcountry enthusiasts. Neither location offers the deep, sustained powder conditions that serious snow seekers crave at this juncture.

The excitement pivots dramatically to Alaska's Arctic corridor, where Imnaviat Creek's forecasted 6 inches will fall amid rain-snow mix and areas of fog—challenging conditions but promising accumulations at elevations where temperatures remain subfreezing. Atigun Pass, the highest point along the Dalton Highway and a critical artery for North Slope oil operations, faces hazardous travel conditions with 4 inches expected alongside freezing fog, creating potentially treacherous whiteout scenarios. Even Prudhoe Bay, typically too cold and dry for significant precipitation, anticipates 2 inches despite marginal temperatures that may produce a rain-snow mix. These Arctic accumulations, while occurring in remote areas far from major ski resorts or population centers, represent the most vigorous snow-producing weather system currently active across the United States. For researchers studying polar precipitation patterns or adventurers seeking authentic winter conditions, Alaska's Brooks Range is where the action resides this week.