Aerial imagery, whether live or not is only ever going to give you a very limited amount of information about snow conditions. A static image of snow will tell you very little about the type of snow. How many times have you looked at what looks to be fresh powder twinkling in the morning sun only to find it is breakable crust when you put your skis in it? To understand the snow conditions fully, you need to put your skis/board in it and get your own understanding of the local snow conditions on different aspects.
It is true that live snow cover could be useful in ski areas that have a large difference in altitude where snow coverage could be important to actually complete a line. But even then satellite imagery isn’t going to be able to tell you if the snow cover is poor and there are hidden rocks just beneath the surface. Even a close up photo won’t tell you if it’s a fresh dump on a solid base or if grass and rocks lie beneath. Knowing conditions is about more than just an image.
In the same way that you will need to make your own assessment of avalanche risk, you will need to develop your own understanding of the snow coverage in the area you are skiing. In France and Switzerland, the avalanche bulletin (accessible from FATMAP) will tell you at what altitude the snow cover starts on North and South facing slopes and it will often tell you a lot about the quality of the snow cover too.
To give information about conditions on specific routes we encourage users to enter comments about conditions within FATMAP. Here you will be able to see when a line was last skied, what people have said about it, including information about the snow cover. Snow conditions can change substantially within a day or even hours, so a visual inspection of the line you are planning before you set off down it is a good idea. For routes where this is not possible and you are unable to get any information from FATMAP or other condition sites, we recommend asking the local ski patrol who should be able to give you up to date information.