M4.6 earthquake 85 km SSW of Hihifo, Tonga
A magnitude 4.6 earthquake struck 85 km SSW of Hihifo, Tonga on Tue, Apr 6, 2021, 3:29 PM GMT+13 (02:29 UTC), 125 km (78 mi) below the surface.
A larger quake followed: M4.8 141 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
- 4.6 (mb), light
- Local time
- UTC
- 2021-04-06 02:29:32 UTC
- Depth
- 124.8 km (77.6 mi), intermediate-depth
- Epicenter
- 16.695° S, 174.012° 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 13.1 km horizontally, 8.8 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 73°
- Stations used
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.1111 km WSW of Hihifo, Tonga · 1995 days ago · 298 km deep · 88 km away
- 4.2139 km WSW of Hihifo, Tonga · 1989 days ago · 305 km deep · 96 km away
- 4.529 km SW of Hihifo, Tonga · 1984 days ago · 10 km deep · 61 km away
- 4.588 km SW of Hihifo, Tonga · 1976 days ago · 170 km deep · 37 km away
- 4.3111 km SSW of Hihifo, Tonga · 1975 days ago · 167 km deep · 27 km away
- 4.8141 km NNW of Neiafu, Tonga · 1952 days ago · 105 km deep · 94 km away
- 4.436 km S of Hihifo, Tonga · 1948 days ago · 80 km deep · 53 km away
- 4.5Tonga · 1948 days ago · 10 km deep · 36 km away
- 4.422 km NW of Hihifo, Tonga · 1944 days ago · 106 km deep · 96 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000e1hp. Read Wed, Sep 30, 2026, 12:21 PM UTC.