M4.1 earthquake 261 km WNW of Pangai, Tonga
A magnitude 4.1 earthquake struck 261 km WNW of Pangai, Tonga on Sat, Aug 19, 2017, 11:05 PM GMT+13 (10:05 UTC), 317 km (197 mi) below the surface.
A larger quake followed: M4.7 297 km WNW 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
- 4.1 (mb), light
- Local time
- UTC
- 2017-08-19 10:05:29 UTC
- Depth
- 317.2 km (197.1 mi), deep
- Epicenter
- 18.861° S, 176.631° 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 11.6 km horizontally, 9.0 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 79°
- Stations used
- 32
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 1 in the 30 days before it.
After
- 4.3Fiji region · 3322 days ago · 381 km deep · 79 km away
- 4.2Fiji region · 3319 days ago · 354 km deep · 53 km away
- 4.2Fiji region · 3296 days ago · 593 km deep · 63 km away
- 4.5Fiji region · 3295 days ago · 574 km deep · 93 km away
- 4.7297 km WNW of Neiafu, Tonga · 3280 days ago · 10 km deep · 88 km away
- 4.6170 km WNW of Pangai, Tonga · 3280 days ago · 188 km deep · 96 km away
- 4.4246 km WNW of Pangai, Tonga · 3275 days ago · 587 km deep · 58 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000abay. Read Wed, Sep 30, 2026, 11:47 PM UTC.