M4.0 earthquake 68 km WSW of Neiafu, Tonga
A magnitude 4.0 earthquake struck 68 km WSW of Neiafu, Tonga on Fri, May 15, 2015, 5:10 PM GMT+13 (04:10 UTC), 63 km (39 mi) below the surface.
A larger quake followed: M5.5 76 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
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-05-15 04:10:14 UTC
- Depth
- 63.3 km (39.3 mi), shallow
- Epicenter
- 18.911° S, 174.576° 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 12.3 km horizontally, 8.3 km in depth
- Magnitude uncertainty
- ±0.52
- Depth from
- From location
- Station coverage gap
- 87°
- 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: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.546 km W of Neiafu, Tonga · 4161 days ago · 85 km deep · 27 km away
- 4.681 km WNW of Neiafu, Tonga · 4136 days ago · 42 km deep · 66 km away
- 4.831 km NE of Pangai, Tonga · 4126 days ago · 35 km deep · 88 km away
- 5.576 km WNW of Pangai, Tonga · 4122 days ago · 138 km deep · 88 km away · felt by 1
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10002c6i. Read Mon, Oct 5, 2026, 6:53 AM UTC.