M5.3 earthquake Tonga
A magnitude 5.3 earthquake struck in Tonga on Fri, Mar 1, 1974, 5:06 AM GMT+13 (16:06 UTC), 98 km (61 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.3 (mb), moderate
- Local time
- UTC
- 1974-02-28 16:06:14 UTC
- Depth
- 98.0 km (60.9 mi), intermediate-depth
- Epicenter
- 18.603° S, 174.472° 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
- 36
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.3 and up: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.7122 km NW of Neiafu, Tonga · 19179 days ago · 134 km deep · 88 km away
- 4.8101 km NNW of Neiafu, Tonga · 19176 days ago · 165 km deep · 99 km away
- 4.9148 km W of Neiafu, Tonga · 19168 days ago · 180 km deep · 97 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00005ey. Read Wed, Sep 23, 2026, 6:58 PM UTC.