M4.3 earthquake 106 km SSW of Hihifo, Tonga
A magnitude 4.3 earthquake struck 106 km SSW of Hihifo, Tonga on Sun, Oct 22, 2006, 3:47 AM GMT-12 (15:47 UTC), 135 km (84 mi) below the surface.
A larger quake followed: M4.4 58 km SSE 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
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2006-10-22 15:47:33 UTC
- Depth
- 135.4 km (84.1 mi), intermediate-depth
- Epicenter
- 16.826° S, 174.215° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
no people dead or missing; no people injured; no buildings damaged or destroyed
From the USGS event page for usp000evt1. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Station coverage gap
- 138°
- Stations used
- 13
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.458 km SSE of Hihifo, Tonga · 7286 days ago · 52 km deep · 73 km away
- 4.467 km S of Hihifo, Tonga · 7260 days ago · 10 km deep · 61 km away
- 4.2109 km SSW of Hihifo, Tonga · 7255 days ago · 90 km deep · 22 km away
- 4.1Tonga · 7240 days ago · 133 km deep · 74 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000evt1. Read Mon, Oct 5, 2026, 11:47 AM UTC.