M4.9 earthquake 84 km WNW of Pangai, Tonga
A magnitude 4.9 earthquake struck 84 km WNW of Pangai, Tonga on Tue, Aug 26, 1986, 12:33 AM GMT+13 (11:33 UTC), 79 km (49 mi) below the surface.
A larger quake followed: M5.0 88 km NNW of Pangai, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1986-08-25 11:33:31 UTC
- Depth
- 79.3 km (49.3 mi), intermediate-depth
- Epicenter
- 19.535° S, 175.108° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002xhg. Read Tue, Sep 22, 2026, 8:46 PM UTC.