M4.5 earthquake 121 km SE of Hihifo, Tonga
A magnitude 4.5 earthquake struck 121 km SE of Hihifo, Tonga on Sat, Feb 4, 1984, 9:28 PM GMT-11 (08:28 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 105 km SE 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
- 1984-02-05 08:28:53 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 16.621° S, 172.891° 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: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.2105 km SE of Hihifo, Tonga · 15571 days ago · 33 km deep · 17 km away
- 4.564 km S of Hihifo, Tonga · 15563 days ago · 59 km deep · 90 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00021su. Read Tue, Sep 29, 2026, 9:44 AM UTC.