M4.6 earthquake Tonga
A magnitude 4.6 earthquake struck in Tonga on Sat, Feb 1, 2020, 4:24 PM GMT-12 (04:24 UTC), 306 km (190 mi) below the surface.
A larger quake followed: M5.0 199 km WSW 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
- 4.6 (mb), light
- Local time
- UTC
- 2020-02-02 04:24:40 UTC
- Depth
- 305.5 km (189.9 mi), deep
- Epicenter
- 16.248° S, 175.503° 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 15.0 km horizontally, 7.2 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 92°
- Stations used
- 40
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.5246 km W of Hihifo, Tonga · 2404 days ago · 361 km deep · 65 km away
- 4.3110 km WSW of Hihifo, Tonga · 2401 days ago · 269 km deep · 78 km away
- 4.3203 km W of Hihifo, Tonga · 2390 days ago · 301 km deep · 59 km away
- 5.0199 km WSW of Hihifo, Tonga · 2383 days ago · 314 km deep · 62 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us70007n3z. Read Wed, Sep 30, 2026, 3:10 PM UTC.