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M3.3 Depth: 20.0 km

M3.3 Earthquake near RYUKYU ISLANDS, JAPAN (Japan)

UTC time: 2025-12-21 13:03:30 UTC Local time: —

About this earthquake

A magnitude M3.3 earthquake was recorded near RYUKYU ISLANDS, JAPAN (Japan) on December 21, 2025 at 13:03 UTC. With a focal depth of about 20 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by EMSC. Japan: 4 earthquakes were recorded in the past 24 hours, the strongest reaching M3.8.

Details

Magnitude
M3.3
Depth
20.0 km
UTC time
2025-12-21 13:03:30 UTC
Local time
—
Country
Japan
City
shi dao cun
Source
emsc
Coordinates
29.60000, 129.60000
Temperature
17.1°C

Map

Depth profile

Depth profile Depth: 20 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 20 km
Shallow
20 km
20 km — shallower than the regional average (35.3 km)
Regional average: 35.3 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Suwanosejima
    Distance: 12 km ·Stratovolcano(es) ·Elevation: 796 m ·Last eruption: 2026 ·Japan
  • Akusekijima
    Distance: 15 km ·Stratovolcano(es) ·Elevation: 555 m ·Japan
  • Nakanoshima
    Distance: 38 km ·Stratovolcano(es) ·Elevation: 979 m ·Last eruption: 1914 ·Japan
  • Kuchinoshima
    Distance: 52 km ·Stratovolcano(es) ·Elevation: 628 m ·Last eruption: 1190 ·Japan
  • Yokoatejima
    Distance: 107 km ·Stratovolcano(es) ·Elevation: 495 m ·Last eruption: 1835 ·Japan
  • Kuchinoerabujima
    Distance: 111 km ·Stratovolcano(es) ·Elevation: 657 m ·Last eruption: 2020 ·Japan

Historic earthquake map · Japan

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Japan

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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