M4.6 earthquake 106 km ESE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 106 km ESE of Hihifo, Tonga on Fri, Oct 29, 2021, 11:37 AM GMT+13 (22:37 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.8 75 km E 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
- 4.6 (mb), light
- Local time
- UTC
- 2021-10-28 22:37:52 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.172° S, 172.826° 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 10.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 66°
- Stations used
- 34
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 8 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.313 km E of Hihifo, Tonga · 1793 days ago · 71 km deep · 93 km away
- 4.774 km SSE of Hihifo, Tonga · 1793 days ago · 10 km deep · 95 km away
- 4.294 km NE of Hihifo, Tonga · 1793 days ago · 10 km deep · 89 km away
- 4.636 km SSE of Hihifo, Tonga · 1789 days ago · 73 km deep · 85 km away
- 4.875 km E of Hihifo, Tonga · 1782 days ago · 10 km deep · 39 km away
- 4.3153 km ENE of Hihifo, Tonga · 1776 days ago · 10 km deep · 78 km away
- 4.4113 km ENE of Hihifo, Tonga · 1760 days ago · 10 km deep · 81 km away
- 4.695 km SE of Hihifo, Tonga · 1746 days ago · 10 km deep · 60 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fpjk. Read Wed, Sep 30, 2026, 1:48 PM UTC.