M4.2 earthquake 123 km WSW of Hihifo, Tonga
A magnitude 4.2 earthquake struck 123 km WSW of Hihifo, Tonga on Sun, Nov 21, 2021, 12:59 PM GMT-12 (00:59 UTC), 204 km (127 mi) below the surface.
A larger quake followed: M4.9 109 km W of Hihifo, 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
- 2021-11-22 00:59:34 UTC
- Depth
- 204.3 km (127.0 mi), intermediate-depth
- Epicenter
- 16.453° S, 174.832° 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 11.0 km horizontally, 8.7 km in depth
- Magnitude uncertainty
- ±0.16
- Depth from
- From location
- Station coverage gap
- 126°
- Stations used
- 20
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.0112 km SW of Hihifo, Tonga · 1769 days ago · 190 km deep · 40 km away
- 4.6120 km SSW of Hihifo, Tonga · 1752 days ago · 89 km deep · 93 km away
- 4.6126 km WSW of Hihifo, Tonga · 1748 days ago · 284 km deep · 23 km away
- 4.5180 km WSW of Hihifo, Tonga · 1745 days ago · 299 km deep · 67 km away
- 4.9109 km W of Hihifo, Tonga · 1734 days ago · 284 km deep · 46 km away
- 4.6126 km SSW of Hihifo, Tonga · 1733 days ago · 61 km deep · 92 km away
- 4.3120 km SSW of Hihifo, Tonga · 1727 days ago · 124 km deep · 100 km away
- 4.277 km SW of Hihifo, Tonga · 1725 days ago · 124 km deep · 61 km away
- 4.493 km SSW of Hihifo, Tonga · 1725 days ago · 112 km deep · 89 km away
- 4.355 km SW of Hihifo, Tonga · 1717 days ago · 144 km deep · 72 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fx91. Read Wed, Sep 30, 2026, 6:58 AM UTC.