M4.7 earthquake Tonga
A magnitude 4.7 earthquake struck in Tonga on Thu, Feb 25, 1982, 9:43 AM GMT-12 (21:43 UTC), 87 km (54 mi) below the surface.
A larger quake followed: M5.0 104 km SSE 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
- 4.7 (mb), light
- Local time
- UTC
- 1982-02-25 21:43:37 UTC
- Depth
- 87.2 km (54.2 mi), intermediate-depth
- Epicenter
- 17.124° S, 174.210° 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
- FROM_LOCATION
Nearby
Within 100 km, magnitude 1.7 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.0104 km SSE of Hihifo, Tonga · 16269 days ago · 99 km deep · 85 km away
- 4.898 km SSE of Hihifo, Tonga · 16230 days ago · 54 km deep · 72 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001jun. Read Wed, Sep 23, 2026, 2:13 PM UTC.