International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1354303
Event time 2025-04-25 11:57:20 (UTC)
Local time 2025-04-24 22:57:20 - [It was night in the affected area.]
Last update 2025-04-25 12:14:16 (UTC)
Magnitude 5.6
Depth 28 km
Class Moderate
Hypocenter Shallow depth
Mercalli scale 6
Possible effects Everyone feels movement. People have trouble walking. Objects fall from shelves. Pictures fall off walls. Furniture moves. Plaster in walls might crack. Trees and bushes shake. Damage is slight in poorly built buildings. No structural damage.
Data status
Data provider EMSC

Location
Continent Pacific Ocean - East
Country Tonga
Administration area Eua
Nearest settlement `Ohonua
Distance 271 km
Course S
Surface type underwater quake
Tsunami region South Pacific
Water surface name South Pacific Ocean



Risk Analisys
Nearest nuclear power plants
There is no known nuclear power plant nearby.
Nearest marine ports
There is no known marine port nearby.
Nearest airports
There is no known marine port nearby.
Nearest volcanoes
There is no known volcanoes nearby.
Quick Analysis
According to the epicenter of the quake, this is an underwater quake. Based on the hypocenter, an underwater landslide is conceivable and could trigger a tsunami. Based on the data received, using the depth of the hypocenter, a potential tsunami will reach the nearest (`Ohonua, Eua, Tonga) settlement within 03:25. (PLEASE NOTE: THIS IS AN ESTIMATE ONLY!)