M4.8 earthquake Tonga
A magnitude 4.8 earthquake struck in Tonga on Sat, Feb 26, 1983, 9:09 AM GMT-12 (21:09 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1983-02-26 21:09:43 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.301° S, 175.005° 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.
- Depth from
- OPERATOR_ASSIGNED
Nearby
Within 100 km, magnitude 1.8 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.351 km WSW of Hihifo, Tonga · 15865 days ago · 113 km deep · 84 km away
- 4.552 km W of Hihifo, Tonga · 15859 days ago · 33 km deep · 84 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001tbs. Read Wed, Sep 23, 2026, 8:32 PM UTC.