M4.5 earthquake 170 km NE of Neiafu, Tonga
A magnitude 4.5 earthquake struck 170 km NE of Neiafu, Tonga on Sat, Mar 28, 2020, 9:01 PM GMT-12 (09:01 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.9 133 km NNE 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-03-29 09:01:31 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.664° S, 172.745° 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 8.6 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- Operator assigned
- Station coverage gap
- 200°, poorly surrounded by stations
- Stations used
- 16
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.1224 km SE of Hihifo, Tonga · 2358 days ago · 10 km deep · 76 km away
- 4.9133 km NNE of Neiafu, Tonga · 2345 days ago · 31 km deep · 100 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us70008lpk. Read Thu, Oct 1, 2026, 2:37 AM UTC.