M4.9 earthquake Tonga region
A magnitude 4.9 earthquake struck in the Tonga region on Sun, Mar 28, 2021, 1:32 PM GMT+13 (00:32 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
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2021-03-28 00:32:39 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 23.359° S, 174.693° 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 11.8 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 86°
- Stations used
- 30
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.6220 km S of ‘Ohonua, Tonga · 2016 days ago · 10 km deep · 5 km away
- 4.6194 km SSW of ‘Ohonua, Tonga · 2000 days ago · 35 km deep · 93 km away
- 4.6197 km SSE of ‘Ohonua, Tonga · 1988 days ago · 10 km deep · 59 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000dzf9. Read Sun, Oct 4, 2026, 11:28 PM UTC.