Lampmile

Lampmile

2 min read Original article ↗

Lampmile: summit wind forecasts

Summit wind forecasts for 34 mountaineering objectives in North America, the Alps and the Andes. Each shows the next 72 hours of wind at the summit's own height, as a range across several weather models, checked every day against weather stations on and below the mountains, over a terrain wind field that shows how the ground bends the wind.

Each mountain's page marks the calmer windows under a wind threshold you choose, the hours when a model calls a storm, the freezing level and the snowline, its routes and named points, and a planner for a start time and a turnaround. Star a mountain and sign up, and its windows come by email each morning.

Mountains

A forecast here is one input among several. It does not resolve gusts, lee turbulence, rotors or thermally driven winds, and those regimes are low confidence. Make your own assessment on the mountain, and turn around when what you see disagrees with what you read here.

The live forecast, the 3D map and the climb planner open with the page's script. Questions and corrections to matt@lampmile.com · Privacy