M4.9 earthquake 284 km WNW of Haveluloto, Tonga
A magnitude 4.9 earthquake struck 284 km WNW of Haveluloto, Tonga on Fri, Oct 25, 1985, 9:02 AM GMT+13 (20:02 UTC), 550 km (342 mi) below the surface.
A larger quake followed: M5.4 294 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
- 4.9 (mb), light
- Local time
- UTC
- 1985-10-24 20:02:28 UTC
- Depth
- 549.9 km (341.7 mi), deep
- Epicenter
- 20.602° S, 177.882° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 6 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.5261 km WNW of Haveluloto, Tonga · 14941 days ago · 500 km deep · 24 km away
- 4.9Fiji region · 14928 days ago · 619 km deep · 56 km away
- 5.4294 km W of Haveluloto, Tonga · 14915 days ago · 526 km deep · 26 km away
- 4.8Fiji region · 14905 days ago · 628 km deep · 25 km away
- 5.1Fiji region · 14901 days ago · 565 km deep · 47 km away
- 4.9Fiji region · 14900 days ago · 606 km deep · 63 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002m3g. Read Tue, Sep 22, 2026, 9:18 AM UTC.