M4.2 earthquake 165 km WSW of Haveluloto, Tonga
A magnitude 4.2 earthquake struck 165 km WSW of Haveluloto, Tonga on Wed, Aug 7, 2019, 2:23 PM GMT+13 (01:23 UTC), 175 km (109 mi) below the surface.
A larger quake followed: M5.2 263 km SW 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
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-08-07 01:23:46 UTC
- Depth
- 174.8 km (108.6 mi), intermediate-depth
- Epicenter
- 21.985° S, 176.539° 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 14.3 km horizontally, 8.0 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 112°
- Stations used
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.1246 km WSW of Haveluloto, Tonga · 2586 days ago · 383 km deep · 91 km away
- 4.5171 km WSW of Haveluloto, Tonga · 2576 days ago · 152 km deep · 7 km away
- 4.3245 km SW of Vaini, Tonga · 2563 days ago · 164 km deep · 86 km away
- 5.2263 km SW of Haveluloto, Tonga · 2561 days ago · 226 km deep · 100 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us600055fs. Read Thu, Oct 1, 2026, 5:45 PM UTC.