This is an issue that has been bugging me for a while - Hemsedal is incorrectly labeled as 'Форель' on the wind overlay map. If you zoom in enough to see the terrain details, the correct name 'Hemsedal' appears. I've had a look at OpenStreetMap, and according to their search function there is no match for 'Форель' in Norway.
Here's the location URL: https://www.windy.com/?60.850,8.570,11
The issue persist on Firefox 75.0, Chrome 84.0.4044.138, and the Windy-app on Android (version 24.0004).
I've tried switching between different languages (English, Norwegian ++), but that doesn't seem to make any difference.