M4.3 earthquake 212 km W of Hihifo, Tonga
A magnitude 4.3 earthquake struck 212 km W of Hihifo, Tonga on Tue, Aug 7, 2018, 7:15 PM GMT-12 (07:15 UTC), 360 km (223 mi) below the surface.
A larger quake followed: M4.9 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
- 2018-08-08 07:15:43 UTC
- Depth
- 359.5 km (223.4 mi), deep
- Epicenter
- 16.087° S, 175.775° 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 13.0 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 154°
- Stations used
- 29
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.2219 km W of Hihifo, Tonga · 2957 days ago · 350 km deep · 13 km away
- 4.8253 km W of Hihifo, Tonga · 2955 days ago · 10 km deep · 45 km away
- 4.5150 km WNW of Hihifo, Tonga · 2941 days ago · 247 km deep · 83 km away
- 4.9Tonga · 2930 days ago · 10 km deep · 65 km away
- 4.4211 km W of Hihifo, Tonga · 2927 days ago · 340 km deep · 52 km away
- 4.0261 km W of Hihifo, Tonga · 2926 days ago · 391 km deep · 50 km away
- 4.3208 km W of Hihifo, Tonga · 2923 days ago · 339 km deep · 6 km away
- 4.3150 km WSW of Hihifo, Tonga · 2919 days ago · 332 km deep · 77 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g8vn. Read Fri, Oct 2, 2026, 6:26 PM UTC.