M4.9 earthquake 185 km NW of Neiafu, Tonga
A magnitude 4.9 earthquake struck 185 km NW of Neiafu, Tonga on Sun, Oct 29, 1978, 7:19 PM GMT-12 (07:19 UTC), 272 km (169 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-10-30 07:19:06 UTC
- Depth
- 272.0 km (169.0 mi), intermediate-depth
- Epicenter
- 17.280° S, 174.988° 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 27
Nearby
Within 100 km, magnitude 1.9 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000x6k. Read Fri, Oct 2, 2026, 5:58 AM UTC.