Observed arrival · 2026-11-10
Whumpf maps avalanche danger onto Mount Mamma’s slopes
An interactive terrain map for Mount Mamma to Hancock Pass overlays Colorado Avalanche Information Center danger ratings and avalanche problems on the slopes.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Backcountry travelers near Mount Mamma and Hancock Pass
- Worth noticing
- CAIC danger colors stay unchanged; avalanche-problem marks use thickness for size and darkness for likelihood.
Field notes
The page offers a “Today (real CAIC)” view and a separate “Storm example (made up)” mode, visibly distinguishing the demonstration from the current forecast. Users can toggle slope-angle shading, aerial imagery, runout display, and terrain exaggeration, then tap a slope for local details. The map uses USGS 1 m lidar terrain; its labels stress that unshaded gray is not a safety rating and the map is not a go/no-go call.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue