At 2:45 this morning, I was sure we were having a small earthquake: there was no sound, just a jolt and some gentle but insistent vibration that lasted 15-20 seconds.
Turns out it was a meteor . . . .
The Seattle Times: Local News: Flashes, booms reported over Western Washington:
Bright flashes and sharp booms were reported in the skies over the Puget Sound area early today, and aviation officials said a meteor may have been the source.
Checking the UW’s geophysics website, I found that this is an unexplained event that was not an earthquake.
We never saw any lights from it, though folks as far away as Idaho did. Ah, the joys of living in such a geologically active place.
<update>: check out the video (handily recorded by local security cams: we never sleep[tm]).