M4.7 earthquake 172 km ESE of Hihifo, Tonga
A magnitude 4.7 earthquake struck 172 km ESE of Hihifo, Tonga on Tue, Jul 13, 2021, 12:48 AM GMT+13 (11:48 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.1 228 km SE 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
- 4.7 (mb), light
- Local time
- UTC
- 2021-07-12 11:48:08 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 16.818° S, 172.457° 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 11.3 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- Operator assigned
- Station coverage gap
- 167°
- Stations used
- 24
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 5 in the 60 days after this one and 5 in the 30 days before it.
After
- 5.1228 km SE of Hihifo, Tonga · 1897 days ago · 10 km deep · 63 km away
- 4.8208 km SE of Hihifo, Tonga · 1894 days ago · 10 km deep · 57 km away
- 4.8189 km NE of Neiafu, Tonga · 1883 days ago · 10 km deep · 81 km away
- 5.0102 km SSE of Hihifo, Tonga · 1879 days ago · 35 km deep · 95 km away
- 4.7232 km SE of Hihifo, Tonga · 1856 days ago · 10 km deep · 69 km away
Before
- 4.4164 km ESE of Hihifo, Tonga · 1909 days ago · 10 km deep · 56 km away
- 4.4112 km E of Hihifo, Tonga · 1922 days ago · 10 km deep · 89 km away
- 4.7139 km ESE of Hihifo, Tonga · 1927 days ago · 10 km deep · 35 km away
- 4.7181 km ESE of Hihifo, Tonga · 1931 days ago · 10 km deep · 10 km away
- 5.5157 km SE of Hihifo, Tonga · 1931 days ago · 10 km deep · 39 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000emic. Read Wed, Sep 30, 2026, 6:16 AM UTC.