M4.0 earthquake Tonga
A magnitude 4.0 earthquake struck in Tonga on Tue, Jan 15, 2019, 9:38 PM GMT+13 (08:38 UTC), 165 km (102 mi) below the surface.
A larger quake followed: M4.9 113 km NW of Nuku‘alofa, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 2019-01-15 08:38:46 UTC
- Depth
- 164.9 km (102.5 mi), intermediate-depth
- Epicenter
- 20.599° S, 174.991° 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 11.5 km horizontally, 15.3 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- From location
- Station coverage gap
- 107°
- Stations used
- 17
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 3 in the 30 days before it.
After
- 4.868 km NE of Kolonga, Tonga · 2808 days ago · 113 km deep · 34 km away
- 4.9113 km NW of Nuku‘alofa, Tonga · 2806 days ago · 202 km deep · 97 km away
- 4.2123 km NNW of Nuku‘alofa, Tonga · 2762 days ago · 230 km deep · 84 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000jb8g. Read Mon, Sep 28, 2026, 2:04 PM UTC.