Hi Jane,

It looks to me like you are suggesting a quake in the first bend of the double Benioff Zone. There have been two quakes up there, one a 5.4 about 115.3469 Km and a 5.0 about 227.5350 Km from your center point. I would take in a larger area for that region. 30 Km is not much for a subduction zone. What I do like about your prediction is the small area though. And your depth is consistent with the depth of the zone. Good luck with it. With the two 5's up there, I think you will come very close, if not hit on this.

Glen