M4.2 earthquake 161 km SE of ‘Ohonua, Tonga
A magnitude 4.2 earthquake struck 161 km SE of ‘Ohonua, Tonga on Sun, Jul 26, 2015, 4:20 PM GMT+13 (03:20 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 149 km SSE of ‘Ohonua, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-07-26 03:20:57 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 22.215° S, 173.706° 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.
- Location uncertainty
- About 15.2 km horizontally, 1.7 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- Operator assigned
- Station coverage gap
- 169°
- Stations used
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.0149 km SSE of ‘Ohonua, Tonga · 4085 days ago · 40 km deep · 72 km away
- 4.3232 km SE of ‘Ohonua, Tonga · 4085 days ago · 10 km deep · 75 km away
- 5.094 km SE of ‘Ohonua, Tonga · 4079 days ago · 64 km deep · 75 km away · felt by 1
- 4.4126 km SSE of ‘Ohonua, Tonga · 4072 days ago · 10 km deep · 95 km away
- 4.5164 km E of ‘Ohonua, Tonga · 4046 days ago · 29 km deep · 94 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10003284. Read Mon, Oct 5, 2026, 10:42 AM UTC.