M4.2 earthquake 296 km SW of Vaini, Tonga
A magnitude 4.2 earthquake struck 296 km SW of Vaini, Tonga on Thu, Sep 3, 2020, 5:26 AM GMT+13 (16:26 UTC), 147 km (91 mi) below the surface.
A larger quake followed: M4.7 south of the Fiji Islands. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-09-02 16:26:19 UTC
- Depth
- 146.6 km (91.1 mi), intermediate-depth
- Epicenter
- 23.317° S, 176.932° 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.
- Location uncertainty
- About 14.8 km horizontally, 12.4 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 122°
- Stations used
- 19
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.7south of the Fiji Islands · 2203 days ago · 130 km deep · 26 km away
- 4.2284 km SW of Vaini, Tonga · 2182 days ago · 160 km deep · 64 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000bjnp. Read Sun, Oct 4, 2026, 8:13 AM UTC.