A killer earthquake in Colombia measured only 5.8 on Richter scale.
Hypocenter location from NEIC:
9901251819 17. 4.29 N 75.68 W 33 5.8 COLOMBIA
Waveforms from our own basement, from the broad-band seismic
sensor operated there by Weston Observatory. Traces start at the
origin time, with time marked in seconds,
and are arranged in the following order: E-W, N-S, V.
Window scaling. [Yes, there is something wrong with N-S component
Vertical line marks the onset of the P wave.
Filtered above 30 seconds, below 10 seconds: