M4.1 earthquake 125 km SSW of Hihifo, Tonga
A magnitude 4.1 earthquake struck 125 km SSW of Hihifo, Tonga on Sat, Jul 22, 2017, 8:39 PM GMT-12 (08:39 UTC), 130 km (81 mi) below the surface.
A larger quake followed: M5.4 77 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
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-07-23 08:39:05 UTC
- Depth
- 130.1 km (80.8 mi), intermediate-depth
- Epicenter
- 17.050° S, 174.096° 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 11.7 km horizontally, 15.9 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- From location
- Station coverage gap
- 137°
- Stations used
- 12
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
- 4.396 km N of Neiafu, Tonga · 3358 days ago · 10 km deep · 83 km away
- 5.477 km SSE of Hihifo, Tonga · 3302 days ago · 30 km deep · 66 km away
- 5.0141 km N of Neiafu, Tonga · 3301 days ago · 28 km deep · 38 km away
- 4.3111 km SW of Hihifo, Tonga · 3298 days ago · 235 km deep · 70 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000a1sl. Read Fri, Oct 2, 2026, 11:13 AM UTC.