International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1353144
Event time 2025-04-23 21:57:48 (UTC)
Local time 2025-04-23 08:57:48 - [It was morning in the affected area.]
Last update 2025-04-23 22:45:35 (UTC)
Magnitude 5
Depth 148.93 km
Class Moderate
Hypocenter Medium deep
Mercalli scale 5
Possible effects Almost everyone feels movement. Sleeping people are awakened. Doors swing open or close. Dishes are broken. Pictures on the wall move. Small objects move or are turned over. Trees might shake. Liquids might spill out of open containers.
Data status confirmed
Data provider AuGOV

Location
Continent Pacific Ocean - East
Country Tonga
Administration area Ha`apai
Nearest settlement Muitoa
Distance 53 km
Course WNW
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 data received, the formation of a tsunami is not conceivable on the basis of the high-depth hypocenter. Underwater landslides, volcanic activity, however, cannot be ruled out.