Föhn in the Urn Reuss valley
It is not so easy just to pick one example from the 2,000 stations. We will take a look at the Erstfeld station (INNESF) in the in-Luft measuring network of the central Swiss cantons. It lies around 5 km south of the MeteoSwiss station in Altdorf (ALT). When Föhn weather conditions are building in the south, this is typically observed several hours earlier in Erstfeld than at the MeteoSwiss station in Altdorf, near Lake Urn. This means that MeteoSwiss has a window of time in which it can send a storm warning for Lake Urn.
Verification as to whether the Föhn has actually reached the lake is then made by a different partner station: Isleten, a partner station located right next to Lake Urn, operated by surf-loving staff.
This is just one of the many examples of the benefits of partner data for MeteoSwiss!