M4.6 earthquake 126 km NNE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 126 km NNE of Hihifo, Tonga on Wed, May 19, 2021, 1:43 AM GMT+13 (12:43 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.7 106 km N 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
- 2021-05-18 12:43:16 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 14.996° S, 173.156° 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 4.3 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 76°
- Stations used
- 45
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.3127 km NNE of Hihifo, Tonga · 1955 days ago · 10 km deep · 41 km away
- 4.5136 km NNE of Hihifo, Tonga · 1945 days ago · 10 km deep · 45 km away
- 4.5111 km ENE of Hihifo, Tonga · 1944 days ago · 10 km deep · 55 km away
- 4.7106 km N of Hihifo, Tonga · 1916 days ago · 10 km deep · 56 km away
- 4.690 km NNE of Hihifo, Tonga · 1912 days ago · 10 km deep · 42 km away
- 4.753 km ENE of Hihifo, Tonga · 1907 days ago · 35 km deep · 86 km away
- 4.5108 km NE of Hihifo, Tonga · 1902 days ago · 10 km deep · 22 km away
Before
- 4.766 km N of Hihifo, Tonga · 1969 days ago · 22 km deep · 78 km away
- 4.679 km ENE of Hihifo, Tonga · 1969 days ago · 10 km deep · 69 km away
- 4.650 km NNE of Hihifo, Tonga · 1974 days ago · 69 km deep · 77 km away
- 4.592 km NNE of Hihifo, Tonga · 1981 days ago · 29 km deep · 43 km away
- 4.6Samoa Islands region · 1984 days ago · 10 km deep · 10 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000e42l. Read Wed, Sep 30, 2026, 1:48 PM UTC.