M4.5 earthquake 184 km WSW of Haveluloto, Tonga
A magnitude 4.5 earthquake struck 184 km WSW of Haveluloto, Tonga on Wed, Sep 4, 1985, 7:34 AM GMT+13 (18:34 UTC), 200 km (124 mi) below the surface.
A larger quake followed: M4.6 258 km W 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
- 4.5 (mb), light
- Local time
- UTC
- 1985-09-03 18:34:28 UTC
- Depth
- 199.9 km (124.2 mi), intermediate-depth
- Epicenter
- 21.686° S, 176.900° 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: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.6258 km W of Haveluloto, Tonga · 14979 days ago · 435 km deep · 95 km away
- 6.3133 km WSW of Haveluloto, Tonga · 14955 days ago · 155 km deep · 54 km away
- 4.9280 km WSW of Haveluloto, Tonga · 14935 days ago · 387 km deep · 98 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002jd8. Read Tue, Sep 22, 2026, 7:01 AM UTC.