M4.3 earthquake 56 km W of Neiafu, Tonga
A magnitude 4.3 earthquake struck 56 km W of Neiafu, Tonga on Mon, Sep 27, 2021, 4:34 AM GMT+13 (15:34 UTC), 91 km (56 mi) below the surface.
A larger quake followed: M4.9 40 km NNW of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 2021-09-26 15:34:49 UTC
- Depth
- 90.7 km (56.4 mi), intermediate-depth
- Epicenter
- 18.603° S, 174.518° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 12.2 km horizontally, 9.3 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 150°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.940 km NNW of Neiafu, Tonga · 1826 days ago · 80 km deep · 47 km away
- 4.488 km NW of Neiafu, Tonga · 1809 days ago · 131 km deep · 58 km away
- 4.533 km NE of Neiafu, Tonga · 1791 days ago · 44 km deep · 82 km away
- 4.285 km NNW of Neiafu, Tonga · 1787 days ago · 67 km deep · 75 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000fqhk. Read Wed, Sep 30, 2026, 10:32 AM UTC.