M4.5 earthquake 89 km SE of Hihifo, Tonga
A magnitude 4.5 earthquake struck 89 km SE of Hihifo, Tonga on Sat, Oct 6, 2018, 5:20 AM GMT+14 (15:20 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M4.9 16 km NE 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
- 2018-10-05 15:20:18 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 16.600° S, 173.294° 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 14.2 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- Operator assigned
- Station coverage gap
- 169°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.661 km SW of Hihifo, Tonga · 2894 days ago · 60 km deep · 94 km away
- 4.454 km ESE of Hihifo, Tonga · 2884 days ago · 126 km deep · 53 km away
- 4.7110 km ESE of Hihifo, Tonga · 2871 days ago · 10 km deep · 67 km away
- 4.916 km NE of Hihifo, Tonga · 2861 days ago · 46 km deep · 92 km away
- 4.7100 km SSE of Hihifo, Tonga · 2860 days ago · 35 km deep · 15 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000hanf. Read Fri, Oct 2, 2026, 3:19 AM UTC.