M4.4 earthquake 181 km NE of Neiafu, Tonga
A magnitude 4.4 earthquake struck 181 km NE of Neiafu, Tonga on Wed, Apr 30, 1975, 10:29 PM GMT-12 (10:29 UTC), 62 km (39 mi) below the surface.
A larger quake followed: M4.6 Samoa Islands region. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1975-05-01 10:29:06 UTC
- Depth
- 62.0 km (38.5 mi), shallow
- Epicenter
- 17.397° S, 172.883° 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
- 16
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000av8. Read Sat, Oct 3, 2026, 1:28 PM UTC.