Shallow M5.9 earthquake hits near China, Japan

A shallow M5.9 earthquake was recorded at 02:46 UTC on May 20, 2026, approximately 10 km (6 miles) north-northwest of China, Japan. According to USGS data, the event originated at a depth of 49.7 km (30.9 miles).

The coordinates for this event place the epicenter at 128.5°E, 27.4°N, near the commonly referenced locality of China, Japan. This area lies within the Ryukyu Islands region, a tectonically active zone with many small islands and dispersed settlements.

Nearby, critical infrastructure is likely to include regional highways, ferry terminals, and possible coastal energy installations serving local communities on the Ryukyu Islands. No specific large population centers are known near the precise epicenter.

There is no tsunami threat associated with this earthquake, based on its location and available data.

USGS issued a green alert for this event, indicating a low likelihood of casualties or damage. The maximum estimated intensity was V, with one felt report submitted. The significance index is 536 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.

The Ryukyu Islands region is situated along the convergent boundary between the Philippine Sea Plate and the Eurasian Plate, an area well known for frequent moderate to strong seismic activity.

This information was last updated at 03:14 UTC on May 20, 2026.