:The earthquake was certainly forecast (not the same as predicted) "The largest historical earthquake occurred in SS1 was in May 09, 1877 with Mw 8.6, converted to Mb, 6.9 using Mw/Mb, relationship determined by Zamudio (1998). The return period (RP) for this largest magnitude earthquake in SS1 is 135 years, which means an earthquake like the one of 1877 could occur in northern Chile around the year 2012." (from ).