Fritz Heider, The Life of a Psychologist. Lawrence: University Press of Kansas, 1983, p. 12—
As I think back on the [Burg] Feistritz house [in Austria], I recall an anecdote of my parents' early married life. My father was teaching my mother to ride a bicycle. They decided to practice in the privacy of the spacious attic, where there were a few loose boards that seem to have given off a rumbling noise that sounded like thunder to people on the floor below as the bicycle was ridden back and forth. Two of my father’s elderly aunts, who had scientific interests, were living in the house. They mailed regular accounts of the Feistritz weather to the Graz newspaper—this being before the day of regular weather reporting and easy telephone communication, amateur reports like these were welcomed. According to the press, the weather that summer presented some unusual features: the skies were consistently clear and blue, yet daily periods of thunder were reported from the Feistritz area.