M4.2 earthquake 258 km WSW of Houma, Tonga
A magnitude 4.2 earthquake struck 258 km WSW of Houma, Tonga on Tue, Apr 18, 2023, 6:16 AM GMT+13 (17:16 UTC), 388 km (241 mi) below the surface.
A larger quake followed: M4.3 210 km W of Houma, 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
- 2023-04-17 17:16:14 UTC
- Depth
- 388.2 km (241.2 mi), deep
- Epicenter
- 21.884° S, 177.677° 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 12.3 km horizontally, 7.8 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 106°
- Stations used
- 35
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000k545. Read Fri, Oct 2, 2026, 11:33 AM UTC.