M4.6 earthquake 74 km NNE of Neiafu, Tonga
A magnitude 4.6 earthquake struck 74 km NNE of Neiafu, Tonga on Thu, Feb 21, 2019, 7:48 PM GMT+13 (06:48 UTC), 152 km (94 mi) below the surface.
A larger quake followed: M4.9 73 km NNW of Neiafu, 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), light
- Local time
- UTC
- 2019-02-21 06:48:09 UTC
- Depth
- 151.9 km (94.4 mi), intermediate-depth
- Epicenter
- 17.997° S, 173.807° 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 7.6 km horizontally, 10.2 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 98°
- Stations used
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us1000j9fa. Read Mon, Sep 28, 2026, 1:36 PM UTC.