It has been my impression that many earthquake aftershocks are random events which cannot be forecast. However, data which I collected related to that powerful November 14, 2001 earthquake in China and its aftershocks suggest to me that a number of those aftershocks may have themselves been generating sun and moon gravity related warning signals before the original earthquake. And they were then triggered by tidal forces after that earthquake occurred.

Earlier this year there was a "Seismic Activity And Storm Data" Web page at this EarthWaves Web site which listed those types of data. Unfortunately that Web page required too much time and energy to maintain.