* Astronomy

The 1854 Ansei-Tokai earthquake was the first of the Ansei Great Earthquakes (1854-1855). It occurred at about 09:00 local time on 23 December, 1854. It had a magnitude of 8.4 and caused a damaging tsunami. More than 10,000 buildings were completely destroyed and there were at least 2,000 casualties.
It was the first of the three Ansei Great Earthquakes; the 1854 Ansei-Nankai earthquake of similar size hit southern Honshu the following day.
Read more