I know one example of a simple object that is influenced by weather - the windsock.That brings me to wonder, is it possible to create more complex objects that are influenced by weather, say trees close to the airport that are swaying in relation to wind velocity, or even "transparent" objects such as debris / snow flying across the runway?

Hi,

I know one example of a simple object that is influenced by weather - the windsock.That brings me to wonder, is it possible to create more complex objects that are influenced by weather, say trees close to the airport that are swaying in relation to wind velocity, or even "transparent" objects such as debris / snow flying across the runway?

Although it would be great if we can do things like that, FSX does not allow conditional animations for scenery at all. So even making a custom windsock model is not possible. Most developers will return the FS2004 MDL format for those things, as it is possible there.