M4.1 earthquake 176 km NW of Neiafu, Tonga
A magnitude 4.1 earthquake struck 176 km NW of Neiafu, Tonga on Fri, Oct 13, 1978, 9:01 PM GMT-12 (09:01 UTC), 190 km (118 mi) below the surface.
A larger quake followed: M4.9 185 km NW 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
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-10-14 09:01:10 UTC
- Depth
- 190.0 km (118.1 mi), intermediate-depth
- Epicenter
- 17.390° S, 175.010° 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.
- Stations used
- 7
Nearby
Within 100 km, magnitude 1.5 and up: 1 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 usp0000x01. Read Thu, Oct 1, 2026, 3:39 AM UTC.