M4.7 earthquake 79 km S of Pangai, Tonga
A magnitude 4.7 earthquake struck 79 km S of Pangai, Tonga on Thu, Jul 18, 1985, 4:47 AM GMT+13 (15:47 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
- 4.7 (mb), light
- Local time
- UTC
- 1985-07-17 15:47:47 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.530° S, 174.391° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.737 km WSW of Pangai, Tonga · 15023 days ago · 57 km deep · 71 km away
- 4.595 km ENE of ‘Ohonua, Tonga · 15013 days ago · 33 km deep · 53 km away
- 4.681 km NE of Kolonga, Tonga · 15008 days ago · 69 km deep · 23 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002gv9. Read Tue, Sep 22, 2026, 8:59 PM UTC.