Historical tsunamis · Dec 17, 1670

1670 Boso, Japan tsunami

Japan

The tsunami of Dec 17, 1670 originated near Boso, Japan (Japan).

Key facts

Date
Dec 17, 1670
Cause
Earthquake
Magnitude
M6.4
Maximum documented water height
2.00 m
Damage
limited (under US$ 1 million)
Observation records
0

It was triggered by a magnitude 6.4 earthquake.

The highest documented water height was 2.00 m.

Damage is estimated at limited (under US$ 1 million).

Map of observation sites

No individual observation sites are documented for this event; the map shows the source only.

Source: NOAA National Centers for Environmental Information (NCEI), Global Historical Tsunami Database. Confirmed events only. Deaths and damage are database estimates; older records are incomplete. Water heights come from different types of observation.