M4.5 earthquake 148 km NE of Neiafu, Tonga
A magnitude 4.5 earthquake struck 148 km NE of Neiafu, Tonga on Sun, Oct 24, 2021, 4:50 PM GMT-12 (04:50 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.6 114 km NE 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
- 4.5 (mb), light
- Local time
- UTC
- 2021-10-25 04:50:39 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.684° S, 173.014° 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 11.9 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.18
- Depth from
- Operator assigned
- Station coverage gap
- 72°
- Stations used
- 18
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.1138 km NNE of Neiafu, Tonga · 1796 days ago · 35 km deep · 53 km away
- 4.2124 km S of Hihifo, Tonga · 1788 days ago · 35 km deep · 99 km away
- 4.4155 km NE of Neiafu, Tonga · 1773 days ago · 10 km deep · 24 km away
- 4.6114 km NE of Neiafu, Tonga · 1764 days ago · 10 km deep · 35 km away
- 4.379 km NNE of Neiafu, Tonga · 1758 days ago · 35 km deep · 72 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000fpsa. Read Wed, Sep 30, 2026, 6:15 AM UTC.