M4.6 earthquake 94 km NW of Hihifo, Tonga
A magnitude 4.6 earthquake struck 94 km NW of Hihifo, Tonga on Fri, Aug 31, 2018, 7:11 AM GMT+13 (18:11 UTC), 225 km (140 mi) below the surface.
A larger quake followed: M4.9 Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-08-30 18:11:32 UTC
- Depth
- 225.1 km (139.8 mi), intermediate-depth
- Epicenter
- 15.439° S, 174.496° 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 10.9 km horizontally, 14.2 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 163°
- Stations used
- 14
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.1101 km WNW of Hihifo, Tonga · 2954 days ago · 279 km deep · 31 km away
- 4.767 km N of Hihifo, Tonga · 2946 days ago · 82 km deep · 73 km away
- 4.5150 km WNW of Hihifo, Tonga · 2941 days ago · 247 km deep · 74 km away
- 4.3100 km NNW of Hihifo, Tonga · 2938 days ago · 153 km deep · 46 km away
- 4.9Tonga · 2931 days ago · 10 km deep · 91 km away
- 4.480 km WSW of Hihifo, Tonga · 2907 days ago · 108 km deep · 74 km away
- 4.5115 km WNW of Hihifo, Tonga · 2897 days ago · 262 km deep · 37 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000had1. Read Sat, Oct 3, 2026, 12:03 AM UTC.