M4.7 earthquake 295 km WNW of Haveluloto, Tonga
A magnitude 4.7 earthquake struck 295 km WNW of Haveluloto, Tonga on Tue, Dec 22, 1987, 6:28 AM GMT+13 (17:28 UTC), 452 km (281 mi) below the surface.
A larger quake followed: M4.8 297 km WNW of Haveluloto, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1987-12-21 17:28:34 UTC
- Depth
- 451.5 km (280.5 mi), deep
- Epicenter
- 20.572° S, 177.983° 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 1.7 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.0Fiji region · 14147 days ago · 628 km deep · 85 km away
- 4.8297 km WNW of Haveluloto, Tonga · 14135 days ago · 521 km deep · 13 km away
- 4.8278 km WNW of Haveluloto, Tonga · 14133 days ago · 414 km deep · 63 km away
- 4.9Fiji region · 14119 days ago · 590 km deep · 92 km away
- 4.4264 km W of Haveluloto, Tonga · 14110 days ago · 481 km deep · 33 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0003bf6. Read Tue, Sep 22, 2026, 9:31 PM UTC.