M4.6 earthquake 96 km SE of Hihifo, Tonga
A magnitude 4.6 earthquake struck 96 km SE of Hihifo, Tonga on Tue, Jul 21, 2020, 10:43 PM GMT+13 (09:43 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.0 100 km SSE 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-07-21 09:43:04 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.460° S, 173.062° 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, 1.9 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- Operator assigned
- Station coverage gap
- 87°
- Stations used
- 21
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 8 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.692 km ESE of Hihifo, Tonga · 2263 days ago · 10 km deep · 36 km away
- 4.424 km ESE of Hihifo, Tonga · 2262 days ago · 115 km deep · 72 km away
- 5.0100 km SSE of Hihifo, Tonga · 2254 days ago · 13 km deep · 57 km away
- 4.885 km ESE of Hihifo, Tonga · 2236 days ago · 10 km deep · 24 km away
- 4.771 km ESE of Hihifo, Tonga · 2230 days ago · 10 km deep · 35 km away
- 4.686 km ESE of Hihifo, Tonga · 2229 days ago · 10 km deep · 32 km away
- 4.570 km ESE of Hihifo, Tonga · 2228 days ago · 10 km deep · 34 km away
- 4.485 km SE of Hihifo, Tonga · 2210 days ago · 79 km deep · 25 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000b55x. Read Thu, Oct 1, 2026, 2:35 AM UTC.