Wikipedia is your friend (although it's already been 'found' and explored pretty well in its few months old infancy
, whaaaaa ) :
Coordinates 20°34′S 175°23′W / 20.57°S 175.38°W
Hunga Tonga - Wikipedia, the free encyclopedia
"Hunga Tonga-Hunga Haʻapai is a volcano located about 30 kilometres (19 mi) south-southeast of Fonuafoʻou (also known as Falcon Island), an island which is part of the nation of Tonga
..."By January 16, a new island had been formed by the explosion. Tongan officials estimated the new island to be 1 kilometre (0.62 mi) wide, 2 kilometres (1.2 mi) long, and 100 metres (330 ft) high, although geologists said the new island would probably exist only a few months until ocean waves wore it down. "
..."Tongan officials declared the eruption at an end on January 26, after observing no new gas, ash, or rock emerging from the island vent. By this time the island was 1 to 2 kilometres (0.62 to 1.24 mi) wide, 2 kilometres (1.2 mi) long, and 120 metres (390 ft) high. The island had joined with Hunga Haʻapai, and was about 200 metres (660 ft) away from joining with Hunga Tonga
At about a mile across, and ~390 feet high I think this new bouncing baby might stay around a while.