M4.6 earthquake 258 km W of Haveluloto, Tonga
A magnitude 4.6 earthquake struck 258 km W of Haveluloto, Tonga on Wed, Sep 18, 1985, 4:50 PM GMT+13 (03:50 UTC), 435 km (270 mi) below the surface.
A larger quake followed: M5.2 Fiji region. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1985-09-18 03:50:32 UTC
- Depth
- 435.2 km (270.4 mi), deep
- Epicenter
- 21.268° S, 177.704° 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 1.6 and up: 6 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.9284 km WNW of Haveluloto, Tonga · 14947 days ago · 550 km deep · 76 km away
- 4.5261 km WNW of Haveluloto, Tonga · 14946 days ago · 500 km deep · 78 km away
- 5.2Fiji region · 14946 days ago · 399 km deep · 85 km away
- 4.9Fiji region · 14944 days ago · 422 km deep · 50 km away
- 4.9280 km WSW of Haveluloto, Tonga · 14940 days ago · 387 km deep · 54 km away
- 4.9Fiji region · 14933 days ago · 619 km deep · 72 km away
Before
- 4.8249 km W of Haveluloto, Tonga · 14989 days ago · 489 km deep · 38 km away
- 5.0290 km W of Haveluloto, Tonga · 14992 days ago · 493 km deep · 45 km away
- 4.5184 km WSW of Haveluloto, Tonga · 14998 days ago · 200 km deep · 95 km away
- 5.6284 km WSW of Haveluloto, Tonga · 15009 days ago · 348 km deep · 84 km away
- 4.9Fiji region · 15009 days ago · 586 km deep · 100 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002jvb. Read Sat, Sep 26, 2026, 10:05 PM UTC.