M4.5 earthquake 213 km NE of Neiafu, Tonga
A magnitude 4.5 earthquake struck 213 km NE of Neiafu, Tonga on Thu, Aug 31, 2017, 4:03 AM GMT-11 (15:03 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.7 155 km ESE 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-08-31 15:03:51 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.450° S, 172.408° 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 10.0 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.22
- Depth from
- Operator assigned
- Station coverage gap
- 115°
- Stations used
- 10
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 7 in the 30 days before it.
After
Before
- 4.4190 km NE of Neiafu, Tonga · 3322 days ago · 10 km deep · 23 km away
- 4.9188 km NE of Neiafu, Tonga · 3324 days ago · 10 km deep · 39 km away
- 4.6157 km ENE of Neiafu, Tonga · 3325 days ago · 10 km deep · 68 km away
- 4.5237 km SE of Hihifo, Tonga · 3327 days ago · 10 km deep · 34 km away
- 4.7229 km NE of Neiafu, Tonga · 3327 days ago · 10 km deep · 23 km away
- 5.0197 km NE of Neiafu, Tonga · 3350 days ago · 10 km deep · 16 km away
- 5.4156 km NE of Neiafu, Tonga · 3350 days ago · 10 km deep · 57 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000ark2. Read Mon, Oct 5, 2026, 7:16 AM UTC.