M4.6 earthquake 159 km WSW of Hihifo, Tonga
A magnitude 4.6 earthquake struck 159 km WSW of Hihifo, Tonga on Sun, Aug 21, 2016, 5:42 PM GMT-12 (05:42 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-08-22 05:42:55 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.339° S, 175.238° 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 14.1 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- Operator assigned
- Station coverage gap
- 147°
- Stations used
- 20
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.3123 km SW of Hihifo, Tonga · 3653 days ago · 176 km deep · 84 km away
- 4.6124 km WSW of Hihifo, Tonga · 3647 days ago · 23 km deep · 43 km away
- 4.5161 km WNW of Hihifo, Tonga · 3646 days ago · 10 km deep · 83 km away
- 4.5141 km WNW of Hihifo, Tonga · 3646 days ago · 10 km deep · 95 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20006u7y. Read Sun, Oct 4, 2026, 6:44 PM UTC.