M5.1 earthquake 138 km NE of Neiafu, Tonga
A magnitude 5.1 earthquake struck 138 km NE of Neiafu, Tonga on Thu, Sep 19, 2024, 10:52 PM GMT-12 (10:52 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.2 136 km NNE 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
- 5.1 (Mww, W-phase moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2024-09-20 10:52:00 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 17.745° S, 173.075° W
- Region
- Tonga
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.1 | Mww, W-phase moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.093 · 11 stations |
| 5.7 | Mi | NOAA Pacific Tsunami Warning Center | First automatic solution · Reviewed · 4 stations |
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 5.7 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 76°
- Stations used
- 66
Nearby
Within 100 km, magnitude 2.1 and up: 3 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 us6000nt99 (also filed as pt24264000). Read Sun, Oct 4, 2026, 7:05 PM UTC.