M5.1 earthquake 165 km SE of Hihifo, Tonga
A magnitude 5.1 earthquake struck 165 km SE of Hihifo, Tonga on Fri, Jul 29, 2016, 4:44 AM GMT+13 (15:44 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.2 233 km SE 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
- 5.1 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-07-28 15:44:22 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.824° S, 172.531° 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 3.4 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.07
- Depth from
- Operator assigned
- Station coverage gap
- 62°
- Stations used
- 81
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.3159 km SSE of Hihifo, Tonga · 3689 days ago · 108 km deep · 68 km away
- 5.2233 km SE of Hihifo, Tonga · 3684 days ago · 10 km deep · 69 km away
- 4.4106 km SSE of Hihifo, Tonga · 3676 days ago · 45 km deep · 100 km away
- 4.187 km SE of Hihifo, Tonga · 3674 days ago · 138 km deep · 81 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000683b. Read Sun, Oct 4, 2026, 6:52 PM UTC.