Nishinoshima volcano (Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 20 November-26 November 2013 (New Activity / Unrest)

The Japanese Coast Guard reported that a Surtseyan eruption 500 m SE from the coast of Nishimo-shima generated a new island called Niijima on 20 November. The island was about 300 x 200 m, and developed a crater 150m wide. Discolored water surrounded the island.
Based on satellite images, as well as accounts from the Japanese Coast Guard and JMA, the Tokyo VAAC reported that a plume rose 600 m. On 22 November the eruption continued and incandescence within the crater was observed. An ash plume rose 900 m and drifted SE.
On 24 November lava flows from the crater extended to the coastline of the island, and bombs continued to be ejected.

Sources: Japan Coast Guard, Tokyo Volcanic Ash Advisory Center (VAAC)
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From: Global Volcanism Program, 2013. Report on Nishinoshima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 20 November-26 November 2013. Smithsonian Institution and US Geological Survey.