Historical tsunamis · Apr 18, 1906, 1:12 PM UTC
1906 N. California tsunami
United States
The tsunami of Apr 18, 1906, 1:12 PM UTC originated near N. California (United States).
Key facts
- Date
- Apr 18, 1906, 1:12 PM UTC
- Cause
- Earthquake and landslide
- Magnitude
- M7.9
- Depth
- 33 km
- Maximum documented water height
- 0.10 m
- Observation records
- 3
- Countries affected
- 1
It was triggered by a magnitude 7.9 earthquake at a depth of 33 km.
The highest documented water height was 0.10 m (San Francisco, Ca, United States).
3 observation sites in 1 countries are recorded.
Map of observation sites
3Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Tsunami arrival times
Documented arrival times from the NOAA/NCEI database, showing the earliest recorded location per country. Coverage is incomplete: a country without an entry was not necessarily spared.
- 0:00 hEarthquake (origin) · Apr 18, 1906, 1:12 PM UTC
- 0:09 hUnited States · San Francisco, Ca · 0.10 m
1 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| United States | 3 | 0.10 m San Francisco, Ca | — | 0:09 h |
Highest documented water heights
3 / 3Individual 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 |
|---|---|---|---|
| San Francisco, Ca · Ca | 0.10 m | 12 km | United States |
| Bolinas, Ca · Ca | — | 26 km | United States |
| Navarro River, Ca · Ca | — | 193 km | United States |
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.