just curious what you are seeing as weather in Mt. Z. If I remember right, the blurring/distortion effect from the heat out there can not be turned off (this is also present inside Halvung as well)--as it is not implemented as a weather effect per se. The weather effect you would be disabling would likely be the sandstorms if it is earth weather occuring, not the heat distortions that are a normal part of the zone.