M4.9 earthquake 174 km WSW of Haveluloto, Tonga
A magnitude 4.9 earthquake struck 174 km WSW of Haveluloto, Tonga on Tue, Mar 31, 1987, 4:31 PM GMT+13 (03:31 UTC), 134 km (83 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
- 1987-03-31 03:31:48 UTC
- Depth
- 134.2 km (83.4 mi), intermediate-depth
- Epicenter
- 21.912° S, 176.694° 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 0 in the 60 days after this one and 1 in the 30 days before it.
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00033su. Read Sun, Sep 27, 2026, 8:32 PM UTC.