M4.2 earthquake 130 km E of Neiafu, Tonga
A magnitude 4.2 earthquake struck 130 km E of Neiafu, Tonga on Tue, Oct 19, 2021, 3:39 PM GMT+13 (02:39 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.6 127 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
- 4.2 (mb), light
- Local time
- UTC
- 2021-10-19 02:39:10 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 18.540° S, 172.753° 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 10.2 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- Operator assigned
- Station coverage gap
- 224°, poorly surrounded by stations
- Stations used
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.5148 km NE of Neiafu, Tonga · 1801 days ago · 10 km deep · 99 km away
- 4.6127 km E of Neiafu, Tonga · 1794 days ago · 10 km deep · 35 km away
- 4.5204 km ENE of Neiafu, Tonga · 1773 days ago · 10 km deep · 82 km away
- 4.4155 km NE of Neiafu, Tonga · 1773 days ago · 10 km deep · 83 km away
- 4.6114 km NE of Neiafu, Tonga · 1764 days ago · 10 km deep · 93 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000fwrt. Read Wed, Sep 30, 2026, 6:58 AM UTC.