The seismograms of the earth quake near Sumatra on 11. Apr. 2012 are displayed in article
Seismometer. By now, the article is avalable in German language only - sorry. Once i have more time i will translate the article into English language. Anyway, the diagrams and the pictures might give you an idea of what is possible for an amateur.
Well - i am not able to predict the future - i simply re used the story which i created for the earthquake in Turkey in October 2011.