M4.9 earthquake 102 km ENE of ‘Ohonua, Tonga
A magnitude 4.9 earthquake struck 102 km ENE of ‘Ohonua, Tonga on Wed, Jun 24, 1987, 11:26 AM GMT+13 (22:26 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.3 69 km E of ‘Ohonua, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (Ms, surface-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-06-23 22:26:04 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 20.975° S, 174.044° 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 1.9 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.369 km E of ‘Ohonua, Tonga · 14342 days ago · 36 km deep · 44 km away
- 5.060 km S of Pangai, Tonga · 14292 days ago · 33 km deep · 76 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000360z. Read Fri, Oct 2, 2026, 2:40 AM UTC.