M4.9 earthquake 105 km WSW of Neiafu, Tonga
A magnitude 4.9 earthquake struck 105 km WSW of Neiafu, Tonga on Sat, Jul 18, 2015, 11:25 AM GMT+13 (22:25 UTC), 137 km (85 mi) below the surface.
A larger quake followed: M5.6 55 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
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-07-17 22:25:56 UTC
- Depth
- 137.1 km (85.2 mi), intermediate-depth
- Epicenter
- 18.950° S, 174.934° 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 8.5 km horizontally, 7.5 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 79°
- Stations used
- 52
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.8167 km WNW of Pangai, Tonga · 4088 days ago · 226 km deep · 86 km away
- 4.1152 km NW of Pangai, Tonga · 4079 days ago · 228 km deep · 53 km away
- 5.655 km WNW of Pangai, Tonga · 4074 days ago · 46 km deep · 77 km away · felt by 2
- 4.4152 km W of Neiafu, Tonga · 4067 days ago · 203 km deep · 64 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20002y9d. Read Sun, Oct 4, 2026, 10:32 PM UTC.