Twin Philippines quakes (General)
A 6.6 earthquake in Mindanao yesterday (with a 5.8 aftershock) was a follow-on from a 6.4 less than two weeks ago.
I'm starting to think that sequential earthquakes are more the norm than one-off ones.
http://www.taipeitimes.com/News/world/archives/2019/10/30/2003724924