M4.3 earthquake 157 km ESE of Hihifo, Tonga
A magnitude 4.3 earthquake struck 157 km ESE of Hihifo, Tonga on Mon, Jul 31, 2023, 10:15 AM GMT+13 (21:15 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 196 km SE of Hihifo, 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
- 2023-07-30 21:15:34 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.386° S, 172.388° 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 9.7 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.27
- Depth from
- Operator assigned
- Station coverage gap
- 115°
- Stations used
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.6156 km SE of Hihifo, Tonga · 1138 days ago · 10 km deep · 86 km away
- 5.0196 km SE of Hihifo, Tonga · 1125 days ago · 10 km deep · 87 km away
- 4.9202 km ESE of Hihifo, Tonga · 1122 days ago · 10 km deep · 66 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000kymv. Read Fri, Oct 2, 2026, 3:05 PM UTC.