Odd distribution pattern. Thanks Bernard Marx.
I agree. Initially I suspected an Icelandic event because the U.K. is directly in the "fall-out" path. That (or some other source) may ultimately prove to be the villain but Rinjani really rang the old planet's bell. Indonesia is a very scary place tectonically. Of course I grew up carefree as a bird almost inside the Yellowstone caldera. Great fishing!