This just in from my dad Steven Gates:
I am at tongatapu airport…. just flew in from vava’u, and pilots pointed this out. Apparently it just popped up today! Near Hunga Tonga… you can see it in the photo. approx coordinates S 20º 27′ 73″ W 175º 25′ 61″ given to me by the pilots. These are probably the first photos of it. The pilots said the earlier pilots said nothing, and these guys just saw it for the first time this flight.