M4.8 earthquake 174 km NE of Neiafu, Tonga
A magnitude 4.8 earthquake struck 174 km NE of Neiafu, Tonga on Thu, Sep 23, 2021, 6:32 AM GMT-12 (18:32 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 2021-09-23 18:32:31 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.368° S, 173.019° 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 6.7 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.28
- Depth from
- Operator assigned
- Station coverage gap
- 148°
- Stations used
- 23
Nearby
Within 100 km, magnitude 1.8 and up: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.5120 km S of Hihifo, Tonga · 1822 days ago · 63 km deep · 74 km away
- 4.8161 km SE of Hihifo, Tonga · 1805 days ago · 10 km deep · 66 km away · felt by 1
- 4.5148 km NE of Neiafu, Tonga · 1801 days ago · 10 km deep · 35 km away
- 4.1138 km NNE of Neiafu, Tonga · 1796 days ago · 35 km deep · 50 km away
- 4.2124 km S of Hihifo, Tonga · 1788 days ago · 35 km deep · 78 km away
- 4.4137 km N of Neiafu, Tonga · 1780 days ago · 76 km deep · 99 km away
- 4.4155 km NE of Neiafu, Tonga · 1773 days ago · 10 km deep · 52 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000ff7i. Read Wed, Sep 30, 2026, 6:15 AM UTC.