M4.5 earthquake 75 km SSW of Hihifo, Tonga
A magnitude 4.5 earthquake struck 75 km SSW of Hihifo, Tonga on Fri, Aug 3, 2018, 11:25 PM GMT+13 (10:25 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.8 121 km SSW 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-03 10:25:03 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.623° S, 173.935° 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 7.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- Operator assigned
- Station coverage gap
- 79°
- Stations used
- 14
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.2111 km S of Hihifo, Tonga · 2976 days ago · 135 km deep · 37 km away
- 4.4Tonga · 2956 days ago · 144 km deep · 67 km away
- 4.591 km S of Hihifo, Tonga · 2948 days ago · 95 km deep · 33 km away
- 4.6104 km SSW of Hihifo, Tonga · 2932 days ago · 10 km deep · 41 km away
- 4.578 km S of Hihifo, Tonga · 2931 days ago · 108 km deep · 19 km away
- 4.3147 km NNW of Neiafu, Tonga · 2927 days ago · 146 km deep · 89 km away
- 4.8121 km SSW of Hihifo, Tonga · 2926 days ago · 10 km deep · 48 km away
- 4.5128 km SSE of Hihifo, Tonga · 2926 days ago · 61 km deep · 66 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000g59z. Read Fri, Oct 2, 2026, 11:54 PM UTC.