M4.6 earthquake 74 km NNE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 74 km NNE of Hihifo, Tonga on Tue, Mar 23, 2021, 4:45 PM GMT+14 (02:45 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.8 85 km NE 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
- 2021-03-23 02:45:27 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.386° S, 173.422° 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 15.4 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 133°
- Stations used
- 22
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 5 in the 30 days before it.
After
- 4.885 km NE of Hihifo, Tonga · 1992 days ago · 10 km deep · 26 km away
- 4.6Samoa Islands region · 1984 days ago · 10 km deep · 53 km away
- 4.592 km NNE of Hihifo, Tonga · 1980 days ago · 29 km deep · 27 km away
- 4.459 km ESE of Hihifo, Tonga · 1980 days ago · 35 km deep · 78 km away
- 4.650 km NNE of Hihifo, Tonga · 1974 days ago · 69 km deep · 25 km away
- 4.679 km ENE of Hihifo, Tonga · 1969 days ago · 10 km deep · 40 km away
- 4.766 km N of Hihifo, Tonga · 1969 days ago · 22 km deep · 38 km away
- 4.6126 km NNE of Hihifo, Tonga · 1961 days ago · 10 km deep · 52 km away
Before
- 4.323 km W of Hihifo, Tonga · 2022 days ago · 110 km deep · 91 km away
- 4.4147 km ENE of Hihifo, Tonga · 2026 days ago · 10 km deep · 94 km away
- 4.515 km SSE of Hihifo, Tonga · 2043 days ago · 110 km deep · 86 km away
- 5.0112 km NNE of Hihifo, Tonga · 2044 days ago · 10 km deep · 38 km away · felt by 2
- 5.0122 km NE of Hihifo, Tonga · 2046 days ago · 10 km deep · 48 km away · felt by 1
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000dxwv. Read Wed, Sep 30, 2026, 11:30 AM UTC.