M4.8 earthquake 105 km SSW of Hihifo, Tonga
A magnitude 4.8 earthquake struck 105 km SSW of Hihifo, Tonga on Thu, Jul 22, 1982, 1:16 PM GMT-12 (01:16 UTC), 143 km (89 mi) below the surface.
A larger quake followed: M4.9 56 km S 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
- 4.8 (mb), light
- Local time
- UTC
- 1982-07-23 01:16:46 UTC
- Depth
- 143.0 km (88.9 mi), intermediate-depth
- Epicenter
- 16.881° S, 174.034° 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
Nearby
Within 100 km, magnitude 1.8 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.7107 km SSW of Hihifo, Tonga · 16118 days ago · 68 km deep · 20 km away
- 4.956 km S of Hihifo, Tonga · 16096 days ago · 213 km deep · 50 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001nk5. Read Wed, Sep 30, 2026, 6:07 PM UTC.