M4.6 earthquake 171 km ENE of Neiafu, Tonga
A magnitude 4.6 earthquake struck 171 km ENE of Neiafu, Tonga on Sun, Mar 8, 2020, 6:30 AM GMT-12 (18:30 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.7 175 km E 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-03-08 18:30:28 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.894° S, 172.564° 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 14.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- Operator assigned
- Station coverage gap
- 95°
- Stations used
- 18
Nearby
Within 100 km, magnitude 1.6 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us60008edd. Read Thu, Oct 1, 2026, 6:27 AM UTC.