M5.6 earthquake 74 km ENE of ‘Ohonua, Tonga
A magnitude 5.6 earthquake struck 74 km ENE of ‘Ohonua, Tonga on Wed, May 20, 1987, 5:58 AM GMT+13 (16:58 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
- 5.6 (mw), moderate
- Local time
- UTC
- 1987-05-19 16:58:18 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 21.185° S, 174.254° 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 2.6 and up: 6 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.799 km ENE of ‘Ohonua, Tonga · 14376 days ago · 33 km deep · 31 km away
- 4.481 km NE of ‘Ohonua, Tonga · 14346 days ago · 120 km deep · 31 km away
- 4.9102 km ENE of ‘Ohonua, Tonga · 14343 days ago · 33 km deep · 32 km away
- 5.369 km E of ‘Ohonua, Tonga · 14340 days ago · 36 km deep · 13 km away
- 4.771 km SE of ‘Ohonua, Tonga · 14336 days ago · 33 km deep · 82 km away
- 5.175 km SE of ‘Ohonua, Tonga · 14322 days ago · 33 km deep · 78 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0003543 (also filed as gcmtb051987c, gcmt19870519165819, iscgem467388). Read Wed, Sep 30, 2026, 7:39 AM UTC.