M4.5 earthquake 58 km N of Kolonga, Tonga
A magnitude 4.5 earthquake struck 58 km N of Kolonga, Tonga on Sun, Jul 1, 2018, 7:46 AM GMT+13 (18:46 UTC), 70 km (43 mi) below the surface.
A larger quake followed: M5.0 53 km NE of Kolonga, 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
- 2018-06-30 18:46:58 UTC
- Depth
- 69.5 km (43.2 mi), shallow
- Epicenter
- 20.610° S, 175.144° 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 15.4 km horizontally, 9.7 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- From location
- Station coverage gap
- 100°
- Stations used
- 12
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 2 in the 30 days before it.
After
- 5.053 km NE of Kolonga, Tonga · 2973 days ago · 27 km deep · 59 km away · felt by 2
- 4.9133 km NNW of Nuku‘alofa, Tonga · 2971 days ago · 188 km deep · 90 km away
- 4.7Tonga · 2961 days ago · 216 km deep · 74 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000fy5h. Read Fri, Oct 2, 2026, 9:59 AM UTC.