Real USGS 1 m lidar terrain. An illustration of how a map could show a forecast, not CAIC's product; always read the full forecast at avalanche.state.co.us. Drag to move the map. Right-drag, Shift-drag or two fingers to rotate and tilt. Scroll or pinch to zoom. Or use the buttons on the map. Problem marks are painted on the ground with the same spacing and line width on screen at every zoom (thickness = avalanche size, darkness = likelihood), and are capped so the danger colour always shows through.
Roses as CAIC draws them: centre = above treeline, middle = near, outer ring = below. Slopes 30° and steeper are coloured, and 25–30° too while that layer is on; grey is not shaded, which is not the same as safe. The map shows the forecast danger for each aspect and elevation band; the slope-specific call stays with the people standing there. Not a go / no-go call.
Forecast: Colorado Avalanche Information Center (avalanche.state.co.us) · Terrain: USGS 3DEP 10 m · Tree cover: USFS TCC · Tree height: Meta/WRI Global Canopy Height Map v2 (CC BY 4.0) · Imagery: aerial photo