M4.8 earthquake 80 km E of Hihifo, Tonga
A magnitude 4.8 earthquake struck 80 km E of Hihifo, Tonga on Wed, Jul 21, 1982, 11:55 AM GMT-11 (22:55 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.1 101 km NE 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
- 1982-07-21 22:55:29 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.005° S, 173.043° 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 1.8 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.1101 km NE of Hihifo, Tonga · 16122 days ago · 33 km deep · 69 km away
- 4.95 km WSW of Hihifo, Tonga · 16122 days ago · 181 km deep · 85 km away
- 5.7140 km ESE of Hihifo, Tonga · 16117 days ago · 33 km deep · 74 km away
- 5.3127 km ESE of Hihifo, Tonga · 16113 days ago · 33 km deep · 59 km away
- 6.3105 km NE of Hihifo, Tonga · 16090 days ago · 33 km deep · 79 km away
- 6.397 km NE of Hihifo, Tonga · 16090 days ago · 33 km deep · 64 km away
- 5.285 km NNE of Hihifo, Tonga · 16085 days ago · 33 km deep · 100 km away
- 5.6115 km ENE of Hihifo, Tonga · 16077 days ago · 37 km deep · 46 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001nhx. Read Tue, Sep 22, 2026, 4:14 PM UTC.