This combines weather and geotechnical engineering, my favourites.
All the mountain highways are generally unstable. They are built in a rising mountain chain. If you tour the Rockies, they are so beautiful because they are active. A dead mountain chain is like the Appalachians, all rounded.
Mud slides, or standard landslides take a long time to build up. The West Pacific heat event has flung tropical plumes directly at BC for some time now. This last one was the final straw. If there are more, we'll get an exponential rise in slides because they are all near the tipping point.
Obviously, I have never seen this sort of action, since the satellite availability is so recent. The direct hits are amazing. But it looks like we'll get a few more.
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