At 1:50 a.m. today there was a pretty big, 4.8M, shallow earthquake in Mexico. It looked like this on the helicordes at Lake FUBAR:
4.8 QUAKE
Here is what some other past events look like:
Thumping Machines
Details
FLUID MOVEMENT
Lake FUBAR makes its own seismos
Something big at Lake FUBAR
VERY BIG, SHALLOW FAR AWAY EARTHQUAKE
FLUID MOVEMENT PLUS SEISMIC GRUMBLES
Fluid movement is the top red line.
CLICK ON IMAGE FOR FULL SIZE
The Louisiana Sinkhole Bugle 
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