M4.5 earthquake 52 km W of Hihifo, Tonga
A magnitude 4.5 earthquake struck 52 km W of Hihifo, Tonga on Sat, Apr 23, 1983, 9:41 PM GMT-11 (08:41 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 123 km WNW 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
- 4.5 (mb), light
- Local time
- UTC
- 1983-04-24 08:41:24 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.998° S, 174.280° 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
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.4123 km WNW of Hihifo, Tonga · 15822 days ago · 287 km deep · 79 km away
- 4.464 km NW of Hihifo, Tonga · 15806 days ago · 33 km deep · 49 km away
- 4.8137 km SW of Hihifo, Tonga · 15802 days ago · 286 km deep · 98 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ur1. Read Wed, Sep 23, 2026, 12:52 AM UTC.