M4.4 earthquake 102 km W of Pangai, Tonga
A magnitude 4.4 earthquake struck 102 km W of Pangai, Tonga on Tue, Aug 4, 2015, 9:05 PM GMT+13 (08:05 UTC), 209 km (130 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
- 4.4 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2015-08-04 08:05:10 UTC
- Depth
- 208.9 km (129.8 mi), intermediate-depth
- Epicenter
- 19.792° S, 175.333° 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 13.2 km horizontally, 3.5 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 97°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.1152 km NW of Pangai, Tonga · 4079 days ago · 228 km deep · 100 km away
- 4.5131 km W of Pangai, Tonga · 4078 days ago · 230 km deep · 29 km away
- 4.9147 km WNW of Pangai, Tonga · 4076 days ago · 10 km deep · 49 km away
- 5.655 km WNW of Pangai, Tonga · 4074 days ago · 46 km deep · 53 km away · felt by 2
- 4.394 km WNW of Pangai, Tonga · 4033 days ago · 186 km deep · 48 km away
- 4.4148 km W of Pangai, Tonga · 4033 days ago · 183 km deep · 46 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us100033z1. Read Mon, Oct 5, 2026, 7:41 AM UTC.