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Planning

Weather integration in route planning: know what to expect

Weather can make a route impassable. MilMap fetches hourly weather data per waypoint so you know what to expect at every point along your route.

J

Jan Kaas

MilMap Editorial

February 27, 2025

5 min read

Weather as a critical planning factor

A mountain path that looks fine in the morning can be hit by a snowstorm in the afternoon. In low-lying areas, a gentle morning rain can grow into flooding by evening. Integrating weather data early in your route planning prevents unpleasant and dangerous surprises.

What MilMap measures

MilMap fetches hourly weather data via the Open-Meteo API for every location in your route. Per waypoint you see:

  • Temperature and apparent temperature
  • Precipitation intensity (mm/h)
  • Snow depth and new snowfall
  • Wind speed and gusts (km/h)
  • Avalanche risk (alpine areas only)
  • Cloud cover and visibility

The timeline

The weather timeline shows 7 days ahead for each waypoint. You can set your planned departure time and MilMap will then show the expected weather at the moment you reach each waypoint, based on your configured marching pace.

Avalanche risk

For routes in alpine areas (above 1,500 m), MilMap shows the avalanche risk on a scale of 1 (low) to 5 (extreme). This is based on precipitation amounts, wind speed, and temperature differences. Use this as supplementary information alongside official avalanche bulletins.

Weather alerts

If weather conditions at a certain point on your route exceed the configured threshold values (e.g. wind gusts > 80 km/h or precipitation > 5 mm/h), MilMap issues a warning when the route is created.

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