M5.7 earthquake Fiji region
A magnitude 5.7 earthquake struck in the Fiji region on Sun, Sep 7, 1986, 9:04 AM GMT+13 (20:04 UTC), 587 km (364 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.7 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1986-09-06 20:04:23 UTC
- Depth
- 586.5 km (364.4 mi), deep
- Epicenter
- 20.669° S, 178.457° W
- Region
- Fiji
- 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 |
|---|---|---|---|
| 5.7 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.66 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.7 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 14S, 32C Centroid Location: Origin Time 20:04:30.9 0.4 Lat 20.43S 0.04 Lon 178.70W 0.04 Dep 593.2 2.1 Half-duration 2.6 Moment Tensor; Scale 10**24 D-CM Mrr=-1.43 0.08 Mtt=0.21 0.13 Mff=1.22 0.12 Mrt=-1.60 0.13 Mrf=-3.18 0.12 Mtf=0.11 0.12 Principal Axes: (T) Val=3.64 Plg=35 Azm=111 (N) Val=0.31 Plg=5 Azm=204 (P) Val=-3.95 Plg=55 Azm=301 Best Double Couple:Mo=3.8*10**24 NP1:Strike=178 Dip=11 Slip=-117 NP2:Strike=25 Dip=80 Slip=-85
From the USGS event page for usp0002xvy. 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.
How well it is located
Reviewed by a seismologist.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.7 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.9285 km WNW of Haveluloto, Tonga · 14617 days ago · 543 km deep · 64 km away
- 4.2Fiji region · 14617 days ago · 563 km deep · 63 km away
- 4.1279 km W of Haveluloto, Tonga · 14604 days ago · 433 km deep · 68 km away
- 3.9Fiji region · 14589 days ago · 624 km deep · 30 km away
Before
Earthquakes todayFiji earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002xvy (also filed as gcmtb090686c, gcmt19860906200423, iscgem485945). Read Fri, Oct 2, 2026, 9:16 PM UTC.