M5.1 earthquake 249 km SW of Vaini, Tonga
A magnitude 5.1 earthquake struck 249 km SW of Vaini, Tonga on Thu, Jul 30, 1987, 10:53 AM GMT+13 (21:53 UTC), 100 km (62 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1987-07-29 21:53:54 UTC
- Depth
- 100.0 km (62.1 mi), intermediate-depth
- Epicenter
- 23.063° S, 176.520° 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 2.1 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000371v. Read Sat, Sep 26, 2026, 2:53 PM UTC.