Here are a few photos of the weather on Gunung Salak on different occasions.
Salak from Bogor, the City of Rains with the peak and valley leading to the crash site on the right.
Salak peak from the NE slopes
A close up showing the weather in the valley that the Sukhoi flew. This view is taken from the NE slopes looking toward the peak and the Eastern ridge of the valley (which the plane crashed in). This is the faint ridge line from which a sheet of cloud is rising.
Similar view but on a clear day
A view of the same ridge looking South from inside the crash valley itself.
Weather on the higher Pangrango – Gede volcanoes on the eastern side of the plain seen from Salak’s slopes.
There are three mountains in this area not two as mentioned in the thread.