Hi Pete!
Thanks for your answer.
You're absolutely right, the symptoms I have described are the same no matter what range I use to set the stations. The strange thing is, that weather stations only lose cloud layers, they're not getting additional ones.
Global Mode has is advantages, but it also has a lot of disadvantages: it doesn't work with AI Traffic, ATC and you don't have smooth weather changes. That's where station mode is much better.
Another issue that might be related to my problem, maybe you've heard about this: as I said, I set the weather for all stations within 200 nautical miles around the aircraft position. If I place the aircraft @ Runway 9L in EGLL and start setting the weather, EGRB (a weather station located in London Centre) gets is weather set and it displays correctly. However, as my setting process progresses, as soon as another station (about 30 miles away vom EGRB) is set, EGRB loses all of its cloud layers and suddenly has some very, very strange wind layers in FSXs weather menu. I send 12 wind layers (5000 feet, 10000 feet etc) but now EGRB has wind layers in 4990 feet, 5000 feet, 5010 feet etc. That's why I thought it's some kind of interpolation that's going on. Have you ever heard of this issue?
Thanks in advance,
Bernd