M4.9 earthquake 119 km NNE of Neiafu, Tonga
A magnitude 4.9 earthquake struck 119 km NNE of Neiafu, Tonga on Sat, Jul 8, 1978, 9:22 PM GMT-12 (09:22 UTC), 33 km (21 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1978-07-09 09:22:00 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 17.654° S, 173.548° 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
- Stations used
- 7
Nearby
Within 100 km, magnitude 1.9 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.998 km NNW of Neiafu, Tonga · 17612 days ago · 121 km deep · 89 km away
- 4.5109 km ENE of Neiafu, Tonga · 17578 days ago · 33 km deep · 84 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000vg4. Read Mon, Sep 28, 2026, 11:40 PM UTC.