M4.7 earthquake 115 km W of Hihifo, Tonga
A magnitude 4.7 earthquake struck 115 km W of Hihifo, Tonga on Wed, Aug 26, 1981, 6:20 AM GMT-12 (18:20 UTC), 287 km (178 mi) below the surface.
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
- 1981-08-26 18:20:02 UTC
- Depth
- 287.1 km (178.4 mi), intermediate-depth
- Epicenter
- 15.939° S, 174.874° 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.
Nearby
Within 100 km, magnitude 1.7 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001fgr. Read Thu, Sep 24, 2026, 1:19 PM UTC.