International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1585417
Event time 2026-03-01 06:38:43 (UTC)
Local time 2026-02-28 17:38:43 - [It was evening in the affected area.]
Last update 2026-03-01 07:31:11 (UTC)
Magnitude 4.9
Depth 35 km
Class Light
Hypocenter Shallow depth
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 reviewed
Data provider USGS

Location
Continent Pacific Ocean - East
Country Tonga
Administration area Niuas
Nearest settlement Falehau
Distance 113 km
Course SE
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
Kuini Lavenia Airport (111,42 km), Kuini Lavenia Airport (111,42 km)
Nearest volcanoes
Tafahi volcano (118,02 km), Curacoa volcano (137,48 km)
Quick Analysis
According to the epicenter of the quake, this is an underwater quake.