M4.2 earthquake 94 km W of Neiafu, Tonga
A magnitude 4.2 earthquake struck 94 km W of Neiafu, Tonga on Tue, Aug 20, 2019, 7:47 AM GMT+13 (18:47 UTC), 151 km (94 mi) below the surface.
A larger quake followed: M4.8 104 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
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-08-19 18:47:27 UTC
- Depth
- 151.2 km (94.0 mi), intermediate-depth
- Epicenter
- 18.551° S, 174.876° 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 11.1 km horizontally, 12.9 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 170°
- Stations used
- 34
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 8 in the 30 days before it.
After
- 4.742 km NNW of Neiafu, Tonga · 2598 days ago · 10 km deep · 83 km away
- 4.6107 km WNW of Neiafu, Tonga · 2583 days ago · 246 km deep · 44 km away
- 4.4170 km NW of Pangai, Tonga · 2571 days ago · 175 km deep · 99 km away
- 4.8104 km WNW of Neiafu, Tonga · 2569 days ago · 175 km deep · 27 km away
- 4.4148 km NW of Neiafu, Tonga · 2567 days ago · 195 km deep · 80 km away
Before
- 4.2125 km NW of Neiafu, Tonga · 2600 days ago · 239 km deep · 77 km away
- 4.735 km NW of Neiafu, Tonga · 2613 days ago · 51 km deep · 71 km away
- 4.662 km NNW of Neiafu, Tonga · 2613 days ago · 10 km deep · 90 km away
- 4.2169 km WNW of Neiafu, Tonga · 2613 days ago · 232 km deep · 77 km away
- 4.288 km WNW of Neiafu, Tonga · 2613 days ago · 104 km deep · 19 km away
- 5.750 km NW of Neiafu, Tonga · 2614 days ago · 10 km deep · 56 km away
- 4.4158 km NW of Neiafu, Tonga · 2614 days ago · 183 km deep · 99 km away
- 4.5103 km NW of Neiafu, Tonga · 2618 days ago · 77 km deep · 69 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000572v. Read Thu, Oct 1, 2026, 6:40 AM UTC.