M4.3 earthquake 216 km NW of Nuku‘alofa, Tonga
A magnitude 4.3 earthquake struck 216 km NW of Nuku‘alofa, Tonga on Fri, Aug 4, 2017, 1:46 PM GMT+13 (00:46 UTC), 303 km (188 mi) below the surface.
A larger quake followed: M4.5 299 km NW of Haveluloto, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-08-04 00:46:31 UTC
- Depth
- 303.0 km (188.3 mi), deep
- Epicenter
- 19.688° S, 176.592° 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 11.2 km horizontally, 12.5 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 250°, poorly surrounded by stations
- Stations used
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.2253 km WNW of Haveluloto, Tonga · 3339 days ago · 386 km deep · 78 km away
- 4.1261 km WNW of Pangai, Tonga · 3330 days ago · 317 km deep · 92 km away
- 4.4277 km NW of Haveluloto, Tonga · 3323 days ago · 532 km deep · 80 km away
- 4.3Fiji region · 3322 days ago · 381 km deep · 95 km away
- 4.2Fiji region · 3320 days ago · 354 km deep · 93 km away
- 4.5299 km NW of Haveluloto, Tonga · 3300 days ago · 564 km deep · 98 km away
- 4.3288 km NW of Haveluloto, Tonga · 3292 days ago · 546 km deep · 92 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000a6cq. Read Thu, Oct 1, 2026, 6:32 AM UTC.