FD, in the Loma Prieta 'quake, mentioned above, I happened to be in the garden when it occurred, and could watch what was happening. The sliding glass door into the house closed ... and opened ... and closed ... and opened again during the shaking - freaked my poor cat out, as she wanted to run in and hide under the bed .FarmerDenise said:We have sliding doors on some of our cabinets and I keep the stuff in jars on the lower level. So they won't go far and hopefully wont break. If they got shook out of the cabinet, the house would probably fall down too So I am not worried about the canning jars.