M4.9 earthquake 188 km NE of Neiafu, Tonga
A magnitude 4.9 earthquake struck 188 km NE of Neiafu, Tonga on Mon, Aug 28, 2017, 4:10 PM GMT-12 (04:10 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-08-29 04:10:14 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.407° S, 172.773° 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 13.3 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- Operator assigned
- Station coverage gap
- 116°
- Stations used
- 145
Nearby
Within 100 km, magnitude 1.9 and up: 3 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.4190 km NE of Neiafu, Tonga · 3321 days ago · 10 km deep · 28 km away
- 4.5213 km NE of Neiafu, Tonga · 3321 days ago · 10 km deep · 39 km away
- 4.7155 km ESE of Hihifo, Tonga · 3312 days ago · 10 km deep · 79 km away
Before
- 4.6157 km ENE of Neiafu, Tonga · 3325 days ago · 10 km deep · 69 km away
- 4.5237 km SE of Hihifo, Tonga · 3327 days ago · 10 km deep · 71 km away
- 4.7229 km NE of Neiafu, Tonga · 3327 days ago · 10 km deep · 62 km away
- 5.0197 km NE of Neiafu, Tonga · 3350 days ago · 10 km deep · 35 km away
- 5.4156 km NE of Neiafu, Tonga · 3350 days ago · 10 km deep · 40 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000acr6. Read Sun, Oct 4, 2026, 11:49 PM UTC.