M4.3 earthquake 188 km ESE of Neiafu, Tonga
A magnitude 4.3 earthquake struck 188 km ESE of Neiafu, Tonga on Wed, Oct 21, 2020, 5:22 PM GMT+13 (04:22 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.4 125 km E of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 2020-10-21 04:22:44 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 19.143° S, 172.270° 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 11.2 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 104°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 5.4125 km E of Neiafu, Tonga · 2125 days ago · 10 km deep · 65 km away
- 5.2111 km ESE of Neiafu, Tonga · 2124 days ago · 10 km deep · 77 km away
- 4.6122 km E of Neiafu, Tonga · 2119 days ago · 10 km deep · 73 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000c6ak. Read Wed, Sep 30, 2026, 8:10 AM UTC.