M4.4 earthquake 194 km SW of Hihifo, Tonga
A magnitude 4.4 earthquake struck 194 km SW of Hihifo, Tonga on Fri, Aug 31, 2018, 7:15 AM GMT-12 (19:15 UTC), 245 km (152 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
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-31 19:15:08 UTC
- Depth
- 245.2 km (152.4 mi), intermediate-depth
- Epicenter
- 17.179° S, 175.099° 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, 11.3 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 84°
- Stations used
- 29
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.0179 km SW of Hihifo, Tonga · 2933 days ago · 267 km deep · 15 km away
- 4.6104 km SSW of Hihifo, Tonga · 2931 days ago · 10 km deep · 97 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 · 99 km away
- 4.2182 km NW of Neiafu, Tonga · 2924 days ago · 206 km deep · 25 km away
- 4.3150 km WSW of Hihifo, Tonga · 2919 days ago · 332 km deep · 87 km away
- 4.2232 km WSW of Hihifo, Tonga · 2916 days ago · 296 km deep · 69 km away
- 4.0201 km WSW of Hihifo, Tonga · 2912 days ago · 332 km deep · 55 km away
- 4.5137 km WNW of Neiafu, Tonga · 2912 days ago · 264 km deep · 90 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000haes. Read Fri, Oct 2, 2026, 11:17 AM UTC.