I'm going to Tromsø, Norway and am concerned about the snow depth and how it will affect my ability to get around - how can I find out where to get the current depth online?
Senorge.no has complete snowdepth information for the entire territory of Norway. They have both present and historical information.
Currently, 8 August 2013, there is not much snow:
However, it's also possible to obtain historical data, for example, from 1 June 2012:
Or, indeed, from 24 January 2012:
If you want to go skiing to mountain summits, June may be a better time than January.
The Norwegian website yr.no is a good resource for weather information in Scandinavia. Looking at the information about Tromsø, among other things, there are live webcams on the bottom of the page, which, sadly, show that there is currently no snow at all there.