M4.1 earthquake 244 km WNW of Pangai, Tonga
A magnitude 4.1 earthquake struck 244 km WNW of Pangai, Tonga on Wed, Feb 20, 1985, 3:53 PM GMT+13 (02:53 UTC), 521 km (324 mi) below the surface.
A larger quake followed: M5.0 153 km WNW 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
- 4.1 (mb), light
- Local time
- UTC
- 1985-02-20 02:53:17 UTC
- Depth
- 521.4 km (324.0 mi), deep
- Epicenter
- 19.107° S, 176.557° 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 1.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002c1p. Read Thu, Sep 24, 2026, 1:53 PM UTC.