ON Aug. 9, 1945, my great-uncle was out fishing in the Pacific, far enough away from Nagasaki, Japan, that he missed the immediate impact of the atomic bomb dropped by the Americans that day. My great-aunt was in their new house outside Nagasaki; the entire family had only a few days earlier fled the city because my great-uncle feared a repeat of the bombing of Hiroshima.

I heard this story many times during my childhood. Back then, it made me feel that my great-uncle was a clever man. As an adult, I realized he was also very lucky, because cleverness alone cannot keep you safe.

For 36 hours after the earthquake and tsunami that eviscerated the east coast of Japan on Friday, I was unable to get any word from my relatives who oversee and live in our family’s Buddhist temple in Iwaki City, south of Sendai, the biggest city near the epicenter. I wondered if they too were lucky and smart.

I wanted to know, and I did not want to know. I dipped into the world of the Internet, with its videos of water raging over the farmland and crushed ferries, and then quickly backed out. Not looking at the videos kept reality at bay, because the images of the coastline do not match the Japan that I know.