I know that, by the left-coast standards of Eldest Younger Brother Tom and Alicia the Midwife, it was nothing, but considering that this is rock-steady (???) Wisconsin, land of the twister, this wee-hours earthquake was quite the startle.
Yes, I was awake for it. The house shook like when the automobile shredding concern in the next block has an explosion, but there was no boom to go with.
If this keeps up, maybe Tom will spot a tornado, or shovel snow, in Long Beach.