M4.7 earthquake 229 km NE of Neiafu, Tonga
A magnitude 4.7 earthquake struck 229 km NE of Neiafu, Tonga on Fri, Aug 25, 2017, 10:13 AM GMT-11 (21:13 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 199 km E of Neiafu, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-08-25 21:13:25 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.477° S, 172.195° 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 7.1 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- Operator assigned
- Station coverage gap
- 63°
- Stations used
- 39
Nearby
Within 100 km, magnitude 1.7 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.5237 km SE of Hihifo, Tonga · 3326 days ago · 10 km deep · 17 km away
- 4.6157 km ENE of Neiafu, Tonga · 3324 days ago · 10 km deep · 77 km away
- 4.9188 km NE of Neiafu, Tonga · 3323 days ago · 10 km deep · 62 km away
- 4.4190 km NE of Neiafu, Tonga · 3320 days ago · 10 km deep · 42 km away
- 4.5213 km NE of Neiafu, Tonga · 3320 days ago · 10 km deep · 23 km away
- 4.7155 km ESE of Hihifo, Tonga · 3311 days ago · 10 km deep · 94 km away
- 5.0199 km E of Neiafu, Tonga · 3279 days ago · 10 km deep · 97 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000abwf. Read Sat, Oct 3, 2026, 8:03 PM UTC.