Real-time danger ratings and snowpack analysis from the Utah Avalanche Center.
The Wasatch-Central Utah mountains receive some of the heaviest snowfall in North America — Alta averages 551 inches per year. The combination of steep terrain (avg slope angle 35–45°), aspect diversity (northern, eastern, and western facing within the same drainages), and persistent weak layers (buried facets and depth hoar from dry early-season snow) creates avalanche conditions that rival any range in the country.
The Great Salt Lake Effect enhances orographic lift, producing intense localized bands of heavy, dense snow that overload the weak underlying snowpack. Avalanche paths here are well-documented — runs like "The Trench" in Little Cottonwood and "Chippy's" in Big Cottonwood are known hazards with repeat cycle history.
The proximity to Salt Lake City (1 million+ people within 30 miles) means any significant avalanche cycle can affect highways, residential areas, and recreation traffic simultaneously. UAC's Salt Lake zone is one of the most-active avalanche forecasting areas in the world, issuing forecasts 5 days per week during the season.
PeakScout aggregates UAC danger ratings by elevation band across all Wasatch and Uinta zones so you can plan terrain selection before you leave the house. When the danger is Considerable or higher above treeline, shift objectives to lower-angle terrain (<30°) and avoid slope angles above 35° in the stated elevation band.
Key steps: (1) Check the UAC forecast on this page before any backcountry trip. (2) Note which elevation bands have the highest danger — above treeline is the most-sensitive indicator. (3) Verify current SNOTEL SWE readings to gauge how much load the snowpack is carrying. (4) Monitor for lightning alerts during spring (March–May), when both avy danger and thunderstorm risk peak simultaneously in the Wasatch.
Always carry beacon, probe, shovel, and communicate your plan. UAC and PeakScout provide the intelligence — decision-making in the field is yours.