Here's hoping that somewhere, there are geniuses watching the current storm situation and planning on how they'd react with a fully operational gondola system in place...
2) close weather doors (these cover the openings where the cable/grips enter the terminals) plus any other doors to the stations.
3) Put grounding clamps on.
4) Turn system off.
This only takes about 45 minutes. With the cabins off, the rope has basically no surface area to get blown around. The towers aren't going anywhere.