M5.7 earthquake Fiji region
A magnitude 5.7 earthquake struck in the Fiji region on Thu, Aug 21, 1975, 9:18 AM GMT+13 (20:18 UTC), 559 km (347 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.7 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-08-20 20:18:50 UTC
- Depth
- 559.0 km (347.3 mi), deep
- Epicenter
- 20.399° S, 178.385° 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 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.8 | Mw, moment | ISC-GEM global catalog | Final · ±0.34 |
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
- Stations used
- 96
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.7 and up: 5 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.8294 km WNW of Haveluloto, Tonga · 18663 days ago · 266 km deep · 90 km away
- 4.9Fiji region · 18660 days ago · 518 km deep · 75 km away
- 4.9Fiji region · 18652 days ago · 618 km deep · 21 km away
- 5.3Fiji region · 18646 days ago · 619 km deep · 54 km away
- 4.6Fiji region · 18634 days ago · 631 km deep · 45 km away
Before
Earthquakes todayFiji earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000chs (also filed as iscgem725316). Read Thu, Oct 1, 2026, 8:28 PM UTC.