"Graham Easterling" wrote in
message news:cq9m95

During the days when Concord flew, it would often go supersonic closer to
Cornwall than it was strictly allowed to do. Sonic booms were a common
occurence. On a few occasions they were very loud, and the whole house
would
shake, which did lead to some false earthquake reports.

Graham

I experienced similar on the south coast near Christchurch. Once the effect
was so pronounced I thought someone was trying to get in the front door.

Jon.