M5.3 earthquake 192 km NE of Miyako, Japan
A magnitude 5.3 earthquake struck 192 km NE of Miyako, Japan on Tue, Jul 2, 1985, 9:34 PM JST (12:34 UTC), 26 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.3 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-07-02 12:34:53 UTC
- Depth
- 26.4 km (16.4 mi), shallow
- Epicenter
- 40.635° N, 143.793° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.3 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.28 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.3 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
Felt (I JMA) at Obihiro, Hokkaido. CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 12S, 25C Centroid Location: Origin Time 12:34:56.1 0.7 Lat 40.63N 0.09 Lon 143.90E 0.14 Dep 24.3 8.1 Half-duration 1.6 Moment Tensor; Scale 10**23 D-CM Mrr=3.92 0.56 Mtt=0.13 0.54 Mff=-4.05 0.77 Mrt=4.12 1.67 Mrf=8.39 3.09 Mtf=-1.79 0.65 Principal Axes: (T) Val=9.93 Plg=57 Azm=300 (N) Val=0.75 Plg=3 Azm=205 (P) Val=-10.68 Plg=33 Azm=113 Best Double Couple:Mo=1.0*10**24 NP1:Strike=192 Dip=13 Slip=77 NP2:Strike=26 Dip=78 Slip=93
From the USGS event page for usp0002gbd. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.3 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002gbd (also filed as gcmtb070285a, gcmt19850702123454, iscgem519397). Read Thu, Oct 1, 2026, 8:00 PM UTC.