With forecasts from over 12 million places and a hyperlocal geolocation, unknown places may appear. In most cases they are even more accurate based on where you are. In stead of the city name, you will get the street name you're in, or the street next to where you are.
Most Norwegian location names on Yr are sourced from the "Sentralt stedsnavnregister" (SSR), which is managed by the Norwegian Mapping Authority (Statens kartverk) and is the official register of location names in Norway. Yr also uses location names from the geographic database GeoNames (mainly foreign). From the state-owned company Entur, which deliver services across all public transport in Norway, we receive names of public transport stops. Additionally, we get location names from sources like the Norwegian Polar Institute, which provides names for polar regions, and The Norwegian Meteorological Institute, which supplies names from meteorological stations.
Who do you contact if you discover wrong location names on Yr?
For Norwegian location you can contact Kartverket on email post@kartverket.no. If you discover wrong location names outside of Norway these can in most cases be edited by visiting GeoNames and follow the instructions given here https://www.geonames.org/manual.html
Yr updates new names from GeoNames once a month.