M4.6 earthquake 115 km SSE of Pangai, Tonga
A magnitude 4.6 earthquake struck 115 km SSE of Pangai, Tonga on Sun, Jul 17, 1977, 4:17 AM GMT+13 (15:17 UTC), 90 km (56 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1977-07-16 15:17:11 UTC
- Depth
- 90.0 km (55.9 mi), intermediate-depth
- Epicenter
- 20.781° S, 173.950° 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.
- Stations used
- 26
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 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 usp0000prn. Read Tue, Sep 22, 2026, 5:39 AM UTC.