Historical tsunamis · Mar 18, 2021, 12:04 AM UTC
2021 N. Algeria tsunami
Algeria
The tsunami of Mar 18, 2021, 12:04 AM UTC originated near N. Algeria (Algeria).
Key facts
- Date
- Mar 18, 2021, 12:04 AM UTC
- Cause
- Earthquake
- Magnitude
- M6.0
- Depth
- 8 km
- Maximum documented water height
- 0.05 m
- Injuries
- 17
- Damage
- limited (under US$ 1 million)
- Observation records
- 5
- Countries affected
- 3
It was triggered by a magnitude 6.0 earthquake at a depth of 8 km.
The highest documented water height was 0.05 m (Marina Di Teulada, Italy).
5 observation sites in 3 countries are recorded.
Outside the source country, the earliest documented arrival was at Palma de Mallorca, Majorca Island (Spain) after 1:10 h.
Damage is estimated at limited (under US$ 1 million).
Map of observation sites
5Each 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) · Mar 18, 2021, 12:04 AM UTC
- 1:10 hSpain · Palma de Mallorca, Majorca Island
1 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
 Italy | 2 | 0.05 m Marina Di Teulada | — | — |
 Spain | 2 | 0.03 m Mahon, Menorca Island | — | 1:10 h |
 France | 1 | 0.03 m Toulon | — | — |
Highest documented water heights
5 / 5Individual 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 |
|---|---|---|---|
| Marina Di Teulada | 0.05 m | 382 km | Italy |
| Mahon, Menorca Island | 0.03 m | 340 km | Spain |
| Toulon | 0.03 m | 691 km | France |
| Palma de Mallorca, Majorca Island | — | 369 km | Spain |
| Porto Empedocle · Sicily | — | 741 km | Italy |
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.