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Japan · Okinawa Prefecture

M3.3 Earthquake near Miyakojima, Okinawa Prefecture (Japan)

UTC time: 2026-09-23 16:30:30 UTC Local time: —
Magnitude
M3.3
Depth
50.0 km
Source
EMSC

Okinawa Prefecture · Miyakojima

Country overview

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About this earthquake

On September 23, 2026 at 16:30 UTC, a magnitude M3.3 earthquake occurred near Miyakojima, Okinawa Prefecture (Japan). The hypocenter lay relatively close to the surface at around 50 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks.

Details

ID
6ecc1de12857d193db12d569d2b017e151078c35
Magnitude
M3.3
Depth
50.0 km
UTC time
2026-09-23 16:30:30 UTC
Local time
—
Country
Japan
State
Okinawa Prefecture
City
Miyakojima
Source
emsc
Coordinates
24.70000, 125.40000
Temperature
27.8°C

Depth profile

Depth profile Depth: 50 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 50 km
Shallow
50 km
50 km — deeper than the regional average (33.2 km)
Regional average: 33.2 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

  • Submarine Volcano NNE of Iriomotejima
    Distance: 149 km ·Stratovolcano ·Elevation: -200 m ·Last eruption: 1924 ·Japan
  • Kueishantao
    Distance: 348 km ·Stratovolcano ·Elevation: 361 m ·Last eruption: 1853 ·Taiwan
  • Tatun Volcanic Group
    Distance: 391 km ·Lava dome(s) ·Elevation: 1'120 m ·Last eruption: 648 ·Taiwan
  • Io-Torishima
    Distance: 452 km ·Complex ·Elevation: 212 m ·Last eruption: 1968 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Miyako AirportJapan · MMY · ROMY
    14.0 kmStraight-line distance
  • Shimojishima AirportJapan · SHI · RORS
    29.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-04

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Japan

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 969 Catalogue entries

Of 968 other entries for this area and period, 603 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · Japan

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Country statistics · Japan

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

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