M4.6 earthquake 100 km NNE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 100 km NNE of Hihifo, Tonga on Sun, Aug 4, 2019, 10:05 AM GMT+13 (21:05 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.7 94 km NE of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 2019-08-03 21:05:32 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 15.146° S, 173.366° 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 9.7 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- Operator assigned
- Station coverage gap
- 84°
- Stations used
- 69
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 7 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.746 km NNE of Hihifo, Tonga · 2602 days ago · 89 km deep · 57 km away
- 4.398 km NNE of Hihifo, Tonga · 2593 days ago · 10 km deep · 20 km away
- 4.575 km NNW of Hihifo, Tonga · 2576 days ago · 63 km deep · 64 km away
- 5.794 km NE of Hihifo, Tonga · 2573 days ago · 10 km deep · 31 km away
- 4.985 km N of Hihifo, Tonga · 2572 days ago · 73 km deep · 52 km away
- 4.4103 km NNE of Hihifo, Tonga · 2568 days ago · 10 km deep · 6 km away
- 5.690 km ENE of Hihifo, Tonga · 2565 days ago · 10 km deep · 57 km away
Before
- 4.896 km ENE of Hihifo, Tonga · 2622 days ago · 10 km deep · 68 km away
- 4.664 km NNW of Hihifo, Tonga · 2629 days ago · 10 km deep · 75 km away
- 4.9102 km NNE of Hihifo, Tonga · 2632 days ago · 10 km deep · 3 km away · felt by 3
- 4.551 km NE of Hihifo, Tonga · 2635 days ago · 35 km deep · 51 km away
- 4.955 km NW of Hihifo, Tonga · 2637 days ago · 107 km deep · 89 km away
- 5.3134 km NNE of Hihifo, Tonga · 2644 days ago · 10 km deep · 41 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us600050b5 (also filed as iscgem616200639). Read Wed, Sep 30, 2026, 5:46 AM UTC.