M4.8 earthquake 239 km WNW of Hihifo, Tonga
A magnitude 4.8 earthquake struck 239 km WNW of Hihifo, Tonga on Sat, Apr 8, 2017, 6:34 AM GMT-12 (18:34 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.1 162 km S of Mata-Utu, Wallis and Futuna. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-04-08 18:34:32 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.457° S, 175.968° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.8 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.099 · 39 stations |
| 5.09 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
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 11.8 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 89°
- Stations used
- 42
Nearby
Within 100 km, magnitude 1.8 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.1162 km S of Mata-Utu, Wallis and Futuna · 3426 days ago · 35 km deep · 81 km away
- 4.5183 km S of Mata-Utu, Wallis and Futuna · 3426 days ago · 10 km deep · 63 km away
- 4.6208 km WNW of Hihifo, Tonga · 3424 days ago · 10 km deep · 43 km away
- 4.2216 km S of Mata-Utu, Wallis and Futuna · 3422 days ago · 10 km deep · 31 km away
- 4.6209 km S of Mata-Utu, Wallis and Futuna · 3415 days ago · 10 km deep · 34 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10008h9i (also filed as iscgem610554461). Read Sun, Oct 4, 2026, 3:00 AM UTC.