I remember one obout 10 yrs ago here on the wet coast....I was sitting on a rolling office chair at my 'puter...and all of a sudden the desk and keyboard left my fingers and rolled 2 feet away..then returned...(the chair rolled with the quake) hair on my neck rose..looked at wifey and asked her if she was playing a trick onme ...but she was 10 feet away..
Next day I had crackes on lots of moldings and they had a big fissure down by the border crossing, about 5 minutes away...