M4.3 earthquake 188 km NW of Neiafu, Tonga
A magnitude 4.3 earthquake struck 188 km NW of Neiafu, Tonga on Sat, Oct 9, 2021, 5:04 PM GMT-12 (05:04 UTC), 291 km (181 mi) below the surface.
A larger quake followed: M4.6 125 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
- 2021-10-10 05:04:25 UTC
- Depth
- 291.3 km (181.0 mi), intermediate-depth
- Epicenter
- 17.398° S, 175.192° 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 9.3 km horizontally, 10.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 128°
- Stations used
- 40
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.5162 km SW of Hihifo, Tonga · 1815 days ago · 197 km deep · 60 km away
- 4.4187 km WNW of Neiafu, Tonga · 1812 days ago · 267 km deep · 74 km away
- 4.1168 km NNW of Neiafu, Tonga · 1805 days ago · 308 km deep · 42 km away
- 4.6125 km NNW of Neiafu, Tonga · 1794 days ago · 176 km deep · 75 km away
- 4.2144 km NW of Neiafu, Tonga · 1792 days ago · 262 km deep · 47 km away
- 4.4131 km SSW of Hihifo, Tonga · 1789 days ago · 219 km deep · 98 km away
- 4.6138 km NW of Neiafu, Tonga · 1781 days ago · 227 km deep · 50 km away
- 4.5103 km NNW of Neiafu, Tonga · 1761 days ago · 80 km deep · 99 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ftgd. Read Wed, Sep 30, 2026, 12:21 PM UTC.