International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis


Earthquake Report
Base data
Event ID 1585365
Event time 2026-03-01 05:44:43 (UTC)
Local time 2026-02-28 16:44:43 - [It was afternoon in the affected area.]
Last update 2026-03-01 06:03:34 (UTC)
Magnitude 6.3
Depth 590.67 km
Class Strong
Hypocenter Great depth
Mercalli scale 7
Possible effects People have difficulty standing. Drivers feel their cars shaking. Some furniture breaks. Loose bricks fall from buildings. Damage is slight to moderate in well-built buildings; considerable in poorly built buildings.
Data status preliminary
Data provider AuGOV

Location
Continent Pacific Ocean - East
Country Tonga
Administration area Tongatapu
Nearest settlement Kanokupolu
Distance 435 km
Course W
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
Ono-i-Lau Airport (151,12 km), Ono-i-Lau Airport (151,12 km)
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.