The Earth Moved

The earth moved,
Yes it did,
No warning,
There should have been
Prior notice,
We have an early warning system,
To wit:
FRED,
Feline,
Reliable
Earthquake
Detector,
He worked flawlessly
Last year,
This time he was out,
On walk-about,
Rumor is,
He wants a raise,
Union cat,
I guess.