If it triggers a Tsunami warning that could be catastrophic to the east coast.
I get the whole watch the water stuff. But thinking logically, there is no way to predict (know exactly) a landslide of that magnitude is going to happen. Unless, there are planted explosives or something on that fault to make it slide.
Anon is knowledgeable of rock mechanics, FWIW.
According to the geologist from France, 100ft high at the US east Coast if the entire identified area slides.