M5.5 earthquake 125 km NE of Hihifo, Tonga
A magnitude 5.5 earthquake struck 125 km NE of Hihifo, Tonga on Tue, Feb 3, 1987, 5:41 PM GMT-11 (04:41 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.7 115 km E of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mw), moderate
- Local time
- UTC
- 1987-02-04 04:41:13 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 15.186° S, 172.933° 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 2.5 and up: 6 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.7130 km SSW of Lotofag?, Samoa · 14478 days ago · 33 km deep · 54 km away
- 5.7115 km E of Hihifo, Tonga · 14451 days ago · 33 km deep · 92 km away
- 4.867 km NE of Hihifo, Tonga · 14450 days ago · 33 km deep · 60 km away
- 5.1126 km ENE of Hihifo, Tonga · 14447 days ago · 33 km deep · 60 km away
- 4.9119 km ENE of Hihifo, Tonga · 14441 days ago · 33 km deep · 29 km away
- 4.7150 km ENE of Hihifo, Tonga · 14428 days ago · 33 km deep · 42 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000325s (also filed as gcmtb020487b, gcmt19870204044113, iscgem473704). Read Tue, Sep 29, 2026, 10:50 PM UTC.