Thanks for the info so far.
Marty - thanks for keeping such a close eye on things, we all owe you so much!
Greg Smith is a very practical, sensible guy so hopefully he is safe and well. In the last message he sent he said he had boarded up the house and would hide in a cave if necessary. I guess we are worried, especially his wife Rosemary (my sister), in case his boat/phone have gone and he is unable to reach the outside world for any help or provisions that he may need. He may be completely on his own, as there is not much else there. It's easy to imagine the worst when you are so far away and don't know what the reality is!!
I will add a note to the 'looking for persons' thread to open the door wider.