M4.4 earthquake 73 km E of Pangai, Tonga
A magnitude 4.4 earthquake struck 73 km E of Pangai, Tonga on Fri, Oct 30, 1987, 8:49 PM GMT+13 (07:49 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.6 117 km SSE of Pangai, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-10-30 07:49:09 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 19.923° S, 173.666° 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 1.5 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6117 km SSE of Pangai, Tonga · 14169 days ago · 33 km deep · 88 km away
- 4.550 km SSE of Pangai, Tonga · 14163 days ago · 33 km deep · 56 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00039rb. Read Thu, Oct 1, 2026, 10:40 AM UTC.