Pardon me if this is a stupid question - but if I am confused, maybe so are others - and would benefit from this discussion.
There was a big earthquake in Oaxaca yesterday at 15:29 UTC. I am almost 3000km distant and was interested to see what my RS4D registered. And sure, enough, there it was. As per theory, about 6 min later the P Wave was apparent here. The theory also indicates that the S-Wave ought to show up 4-5 minutes after that. Yet, as you can see, it seems to arrive a full 8 minutes later.
Can anybody explain this? It seem very weird to me.