M4.4 earthquake 207 km SW of Vaini, Tonga
A magnitude 4.4 earthquake struck 207 km SW of Vaini, Tonga on Sun, May 17, 2015, 4:34 PM GMT+13 (03:34 UTC), 154 km (96 mi) below the surface.
A larger quake followed: M5.8 279 km SW of Vaini, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-05-17 03:34:40 UTC
- Depth
- 154.0 km (95.7 mi), intermediate-depth
- Epicenter
- 22.431° S, 176.678° 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 13.6 km horizontally, 5.9 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 85°
- Stations used
- 41
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 2 in the 30 days before it.
After
- 5.0226 km SW of ‘Ohonua, Tonga · 4136 days ago · 35 km deep · 78 km away
- 4.0266 km SW of Vaini, Tonga · 4132 days ago · 223 km deep · 60 km away
- 5.8279 km SW of Vaini, Tonga · 4108 days ago · 170 km deep · 73 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10002ci5. Read Mon, Oct 5, 2026, 9:41 AM UTC.