M4.2 earthquake 85 km SSE of Hihifo, Tonga
A magnitude 4.2 earthquake struck 85 km SSE of Hihifo, Tonga on Sun, Sep 28, 2025, 10:19 PM GMT+13 (09:19 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M4.6 122 km SE 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
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-09-28 09:19:11 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 16.669° S, 173.499° 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 10.5 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- Operator assigned
- Station coverage gap
- 133°
- Stations used
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.165 km SSE of Hihifo, Tonga · 366 days ago · 38 km deep · 20 km away
- 4.289 km SSE of Hihifo, Tonga · 358 days ago · 77 km deep · 8 km away
- 4.279 km ESE of Hihifo, Tonga · 346 days ago · 10 km deep · 70 km away
- 4.462 km S of Hihifo, Tonga · 339 days ago · 54 km deep · 38 km away
- 4.6122 km SE of Hihifo, Tonga · 334 days ago · 10 km deep · 62 km away
- 4.464 km S of Hihifo, Tonga · 327 days ago · 112 km deep · 40 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000riau. Read Mon, Oct 5, 2026, 8:08 AM UTC.