Historical tsunamis · Jul 28, 1957, 8:40 AM UTC
1957 S. Mexico tsunami
Mexico
The tsunami of Jul 28, 1957, 8:40 AM UTC originated near S. Mexico (Mexico).
Key facts
- Date
- Jul 28, 1957, 8:40 AM UTC
- Cause
- Earthquake
- Magnitude
- M7.9
- Depth
- 25 km
- Maximum documented water height
- 1.30 m
- Deaths
- 65
- Injuries
- many (about 101–1,000)
- Houses destroyed
- many (about 101–1,000)
- Damage
- US$ 25 million
- Observation records
- 3
- Countries affected
- 1
It was triggered by a magnitude 7.9 earthquake at a depth of 25 km.
The highest documented water height was 1.30 m (Acapulco, Mexico).
3 observation sites in 1 countries are recorded.
The database records 65 deaths.
Houses destroyed: many (about 101–1,000).
Damage is estimated at US$ 25 million.
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) · Jul 28, 1957, 8:40 AM UTC
- 0:13 hMexico · Acapulco · 1.30 m
2 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| Mexico | 3 | 1.30 m Acapulco | — | 0:13 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 |
|---|---|---|---|
| Acapulco · Guerrero | 1.30 m | 94 km | Mexico |
| Salina Cruz · Oaxaca | 0.15 m | 419 km | Mexico |
| Manzanillo · Colima | — | 622 km | Mexico |
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.