M4.0 earthquake 138 km S of Hihifo, Tonga
A magnitude 4.0 earthquake struck 138 km S of Hihifo, Tonga on Wed, Aug 28, 2024, 9:44 AM GMT-12 (21:44 UTC), 103 km (64 mi) below the surface.
A larger quake followed: M5.2 136 km NNE 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
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2024-08-28 21:44:56 UTC
- Depth
- 102.9 km (64.0 mi), intermediate-depth
- Epicenter
- 17.189° S, 173.999° 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 11.4 km horizontally, 7.4 km in depth
- Magnitude uncertainty
- ±0.26
- Depth from
- From location
- Station coverage gap
- 134°
- Stations used
- 10
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.4165 km SW of Hihifo, Tonga · 761 days ago · 210 km deep · 89 km away
- 4.7106 km SSW of Hihifo, Tonga · 758 days ago · 88 km deep · 41 km away
- 4.760 km SSE of Hihifo, Tonga · 733 days ago · 71 km deep · 87 km away
- 5.2136 km NNE of Neiafu, Tonga · 729 days ago · 35 km deep · 65 km away · felt by 2
- 4.583 km SSE of Hihifo, Tonga · 722 days ago · 57 km deep · 77 km away
- 4.5140 km SSE of Hihifo, Tonga · 715 days ago · 35 km deep · 50 km away
- 4.455 km SSW of Hihifo, Tonga · 711 days ago · 83 km deep · 88 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000ngdk. Read Sun, Oct 4, 2026, 4:49 PM UTC.