M4.2 earthquake 150 km WNW of Haveluloto, Tonga
A magnitude 4.2 earthquake struck 150 km WNW of Haveluloto, Tonga on Wed, Oct 6, 2021, 8:08 AM GMT+13 (19:08 UTC), 303 km (188 mi) below the surface.
A larger quake followed: M4.6 230 km WNW of Haveluloto, 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
- 2021-10-05 19:08:46 UTC
- Depth
- 302.6 km (188.0 mi), deep
- Epicenter
- 20.646° S, 176.560° 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 15.4 km horizontally, 11.1 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 143°
- Stations used
- 20
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
- 4.2150 km WSW of Haveluloto, Tonga · 1795 days ago · 406 km deep · 87 km away
- 4.6230 km WNW of Haveluloto, Tonga · 1777 days ago · 10 km deep · 84 km away
- 4.5133 km W of Haveluloto, Tonga · 1766 days ago · 207 km deep · 56 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000ft17. Read Mon, Sep 28, 2026, 9:59 PM UTC.