FAQ - Earthquake Effects & Experiences

Q: What does an earthquake feel like?

A: The way an earthquake feels depends on where you are, where the earthquake
is, and how big the earthquake is:

A large earthquake nearby will feel like a sudden large jolt followed
quickly by more strong shaking that may last a few seconds or up to a couple
of minutes if it's a rare great event. The shaking will feel violent and it
will be difficult to stand up. The contents of your house will be a mess.

A large earthquake far away will feel like a gentle bump followed several
seconds later by stronger rolling shaking that may feel like sharp shaking
for a little while.

A small earthquake nearby will feel like a small sharp jolt followed by a
few stronger sharp shakes that pass quickly.

A small earthquake far away will probably not be felt at all, but if you do
feel it, it will be a subtle gentle shake or two that is easier to feel if
you're still and sitting down.

The type of crustal material the seismic waves travel through on their way
to you, and the type of shallow crustal structure that is directly below you
will also influence the shaking you feel. Soft thick sediments will amplify
the shaking, and hard rock will not. If the energy happens to bounce around
and get focused on where you are, that will also amplify the shaking.

Low-level vibrations that last for more than a few seconds is not indicative
of an earthquake, but is more likely a man-made environmental source.

« Previous FAQ | All FAQ's | All FAQ Categories | Next FAQ »