International Disaster and Emergency Monitoring Center

Preliminary earthquake data and analysis

Earthquake Report
Base data
Event ID 1584052
Event time 2026-02-27 14:48:23 (UTC)
Local time 2026-02-27 05:48:23 - [It was morning in the affected area.]
Last update 2026-02-27 14:57:35 (UTC)
Magnitude 5.1
Depth 20 km
Class Moderate
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
Data provider EMSC

Location
Continent Asia
Country Japan
Administration area Okinawa
Nearest settlement Tarama
Distance 71 km
Course N
Surface type underwater quake
Tsunami region North Pacific
Water surface name Eastern China Sea

Overview map
Green circle [feel the Eq] 750 km, Orange circle 100 km, Yellow circle 150 km

Population map
Green circle [feel the seism activity] 750 km, Orange circle 100 km, Yellow circle 150 km

Risk Analisys
Nearest nuclear power plants
There is no known nuclear power plant nearby.
Nearest marine ports
Hirara Ko (72,37 km), Hirara Ko (72,37 km), Ishigaki (125,27 km), Ishigaki (125,27 km)
Nearest airports
Shimojishima Airport (61,65 km), Shimojishima Airport (61,65 km), Tarama Airport (72,56 km), Tarama Airport (72,56 km), Miyako Airport (74,58 km)
Nearest volcanoes
Submarine Volcano NNE of Iriomotejima volcano (120,38 km), Kobi-sho volcano (133,24 km)
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 (Tarama, Okinawa, Japan) settlement within 00:54. (PLEASE NOTE: THIS IS AN ESTIMATE ONLY!)