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6.0

Adjacent Sea of Yonagunijima Island

· 7 days ago

Magnitude
6.0 MJ
Depth
10.0 km
UTC
30 Sept 2026, 05:00:24
Coordinates
23.800°N 122.900°E
Preferred source
Source: Japan Meteorological Agency website (jma.go.jp), processed by Deprem
Sources
JMA, USGS, EMSC, GFZ
Felt reports
0
Revision
Automatic solution
Nearest active fault
~30 km, Subduction_ThrustGEM Global Active Faults (Styron & Pagani 2020), CC BY-SA 4.0

Expected intensity

Adjacent Sea of Yonagunijima IslandNatural Earth
  • MMI II ≤ 561 km
  • MMI III ≤ 255 km
  • MMI IV ≤ 118 km
  • MMI V ≤ 54 km
  • MMI VI ≤ 25 km
  • MMI VII ≤ 6.3 km

Rings show the expected Modified Mercalli (MMI) intensity from the Akkar–Sandıkkaya–Bommer (2014) ground-motion model converted with Worden et al. (2012). Real shaking depends on soil and building.

Felt reports

No reports yet.

Did you feel it? Report

Source comparison

Latest solution of each source. Differences are to the preferred solution.

SourceMagnitudeTimeΔ timeDepthΔ locationPlace
JMA ★6.0MJ—10.0 km—Adjacent Sea of Yonagunijima Island
GFZ5.6MW+26.8 s10.0 km4.6 kmTaiwan Region
EMSC5.6MW+26.1 s10.0 km6.7 kmTAIWAN REGION
USGS5.6MWW+25.0 s10.8 km1.5 km74 km S of Yonakuni, Japan
Revision history (5)
SourceMagnitudeTimeDepthCoordinatesReceived
EMSC5.6MW10.8 km23.803°N 122.915°E
EMSC5.8M0.2 km23.799°N 122.800°E
EMSC5.8M1.2 km23.793°N 122.803°E
EMSC5.8MB1.2 km23.793°N 122.803°E
EMSC5.8MB10.0 km23.782°N 122.828°E

Aftershock forecast

The chance of an aftershock of magnitude 4 or more in the next 7 days is 29%, and of magnitude 5 or more 4%.
The chance of an aftershock of magnitude 3 or more in the next 24 hours is 45%.
Magnitude1 day1 week1 month
M ≥ 345%≈ 0.7585%≈ 3.9495%≈ 9.56
M ≥ 47%≈ 0.0829%≈ 0.3952%≈ 0.96
M ≥ 50.8%≈ <0.014%≈ 0.049%≈ 0.10
M ≥ 6<0.1%≈ <0.010.4%≈ <0.011.0%≈ 0.01

≈ expected number of aftershocks

1 aftershock recorded so far within 10 km (1 of M4.5 or more).

Computed: . Method: Reasenberg-Jones (generic, Bayesian a-value update); regime ANSR-SHALCON; generic parameters Page et al. (2016) via USGS OpenSHA GenericRJ_ParametersFetch.json. Probabilities are updated with the recorded aftershocks on every request. (b = 1, p = 0.98, c = 0.018 days, a = -2.428)

This is a statistical forecast, not an earthquake prediction. Actual aftershock activity can differ; follow local authorities for official statements.

Aftershocks

Earthquakes within 80 km of the epicentre in the first 30 days.

Count: 1