M4.3 earthquake 147 km NNW of Neiafu, Tonga
A magnitude 4.3 earthquake struck 147 km NNW of Neiafu, Tonga on Thu, Sep 27, 2018, 6:59 AM GMT-12 (18:59 UTC), 146 km (91 mi) below the surface.
A larger quake followed: M5.4 86 km SW of Hihifo, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-09-27 18:59:06 UTC
- Depth
- 145.9 km (90.7 mi), intermediate-depth
- Epicenter
- 17.347° S, 174.280° 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 8.3 km horizontally, 10.1 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 140°
- Stations used
- 22
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.8121 km SSW of Hihifo, Tonga · 2926 days ago · 10 km deep · 42 km away
- 4.5128 km SSE of Hihifo, Tonga · 2925 days ago · 61 km deep · 83 km away
- 4.2182 km NW of Neiafu, Tonga · 2924 days ago · 206 km deep · 89 km away
- 5.486 km SW of Hihifo, Tonga · 2899 days ago · 200 km deep · 88 km away
- 4.7104 km N of Neiafu, Tonga · 2896 days ago · 104 km deep · 43 km away
Before
- 4.578 km S of Hihifo, Tonga · 2931 days ago · 108 km deep · 94 km away
- 4.6104 km SSW of Hihifo, Tonga · 2931 days ago · 10 km deep · 64 km away
- 4.0179 km SW of Hihifo, Tonga · 2933 days ago · 267 km deep · 85 km away
- 4.591 km S of Hihifo, Tonga · 2948 days ago · 95 km deep · 92 km away
- 4.4194 km SW of Hihifo, Tonga · 2954 days ago · 245 km deep · 89 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000h6e8. Read Fri, Oct 2, 2026, 5:16 PM UTC.