When the house started to shake and roll, my 90 year old mother went to look outside to see if Hurricane Irene was arriving days ahead of predictions. She lived her entire life in the area affected by the 5.8 magnitude earthquake and had not experienced one before. She had no reference for understanding the rattling of the earth around her.
One of my sisters, who also lives in the D.C. Area, has lived in California for a number of years and she recognized the event correctly and quickly. My sister was able to share a laugh with her over their very different levels of experience and the fact that no real damage was done.