Historical tsunamis · Aug 14, 1909, 6:30 AM UTC
1909 Anegawa, Japan tsunami
Japan
The tsunami of Aug 14, 1909, 6:30 AM UTC originated near Anegawa, Japan (Japan).
Key facts
- Date
- Aug 14, 1909, 6:30 AM UTC
- Cause
- Earthquake
- Magnitude
- M6.9
- Depth
- 33 km
- Maximum documented water height
- 1.80 m
- Deaths
- 41
- Houses destroyed
- 976
- Damage
- severe (about US$ 5–25 million)
- Observation records
- 1
- Countries affected
- 1
It was triggered by a magnitude 6.9 earthquake at a depth of 33 km.
The highest documented water height was 1.80 m (Lake Biwa, Japan).
1 observation sites in 1 countries are recorded.
The database records 41 deaths.
Houses destroyed: 976.
Damage is estimated at severe (about US$ 5–25 million).
Map of observation sites
1Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Japan | 1 | 1.80 m Lake Biwa | — | — |
Highest documented water heights
1 / 1Individual documented observations for this event. Heights come from different measurement types and sources; not every location has a measured height.
| Location / station | Observed height | Distance from source | Country |
|---|---|---|---|
| Lake Biwa · Shiga | 1.80 m | 56 km | Japan |
More tsunamis
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.