In The Fall of The House of Usher what happens on the night of the terrible storm?

Answer 1

The house collapses the narrator escapes, the house is swallowed up by the surrounding lake, which is crazy because the house is huge and the lake is super tiny, and Usher and his sister die.

It means that the house was Usher, he was mad, the house drove him mad and started to drive the narrator mad, eventually their insanity completely engulfed them or in this case morphed into a house and was swallowed by a tiny lake.

-unknown author

This could mean the house was destroyed because both Madeline and Usher already had died and there was no one left to own the house who was related to them.

~KKMG1

Answer 2

On the night of the terrible storm, the narrator is reading in the library when Roderick Usher appears, believing the house is alive and the storm is influencing it. Madeline Usher also apparently dies and is buried that night, but eventually returns. The storm intensifies, leading to the collapse of the House of Usher and the death of both siblings.