I tend to use Snow Forecast http://www.snow-forecast.com/
although the actual predicted snow levels can be optimistic to say the least it does give a good indication of temperature, wind chill and freezing level; plus there are normally links to the actual website of the resort you are interested in.
As you are based in Morges, you will be looking at the following resorts:
Saas-Fee and Zermatt are both open (Zermatt fully - I was there last weeked
Verbier has some runs open
Champèry and Avoriaz open this weekend I believe (though you will likely have to park at Les Crosets)
Crans-Montana (and neighbouring Anzère) have limited slopes open this weekend and plan to open fully by the 19th.
Ovronnaz appears to be partially open as well.
TOP-TIP, you can normally add "tele" to a resort name to find the website of the lift company (e.g. www.teleovronnaz.ch
If you're planning to go past Geneva into France then I know Chamonix is open - beyond that I don't have experience of that area..
Hope this helps..