Hi All,
I just shot an email to Gregg Janman of Hermetech Mastering in Yokohama to see if he was OK, and he's written back:
"hey nigel,
thanks so much for the concern! we are all well and trying to gear up for the staggered black-outs, which will start tomorrow.
please let anyone concerned know that we are all well and in good spirits, if not a little freaked out. it's bad timing with the forum moving the same day, i wish i could post a notice on the old forum to let people know we are safe.
all the best,
gregg"
EDIT: Gregg has just posted separately as well with some further details.