M4.5 earthquake 108 km SSW of Hihifo, Tonga
A magnitude 4.5 earthquake struck 108 km SSW of Hihifo, Tonga on Tue, Oct 12, 2021, 3:31 PM GMT-12 (03:31 UTC), 156 km (97 mi) below the surface.
A larger quake followed: M5.0 121 km S 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
- 4.5 (mb), light
- Local time
- UTC
- 2021-10-13 03:31:20 UTC
- Depth
- 156.0 km (96.9 mi), intermediate-depth
- Epicenter
- 16.875° S, 174.158° 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 7.4 km horizontally, 6.8 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 54°
- Stations used
- 39
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 7 in the 30 days before it.
After
- 4.1168 km NNW of Neiafu, Tonga · 1804 days ago · 308 km deep · 85 km away
- 5.0121 km S of Hihifo, Tonga · 1803 days ago · 75 km deep · 27 km away
- 4.6125 km NNW of Neiafu, Tonga · 1794 days ago · 176 km deep · 95 km away
- 4.774 km SSE of Hihifo, Tonga · 1793 days ago · 10 km deep · 67 km away
- 4.4131 km SSW of Hihifo, Tonga · 1789 days ago · 219 km deep · 27 km away
- 4.636 km SSE of Hihifo, Tonga · 1789 days ago · 73 km deep · 91 km away
- 4.2124 km S of Hihifo, Tonga · 1788 days ago · 35 km deep · 55 km away
- 4.4137 km N of Neiafu, Tonga · 1780 days ago · 76 km deep · 64 km away
- 4.2123 km WSW of Hihifo, Tonga · 1773 days ago · 204 km deep · 86 km away
- 4.0112 km SW of Hihifo, Tonga · 1769 days ago · 190 km deep · 46 km away
Before
- 4.5162 km SW of Hihifo, Tonga · 1815 days ago · 197 km deep · 64 km away
- 4.3142 km N of Neiafu, Tonga · 1821 days ago · 105 km deep · 58 km away
- 4.8117 km N of Neiafu, Tonga · 1821 days ago · 98 km deep · 80 km away
- 4.5120 km S of Hihifo, Tonga · 1822 days ago · 63 km deep · 59 km away
- 4.557 km SE of Hihifo, Tonga · 1829 days ago · 57 km deep · 91 km away
- 4.486 km WSW of Hihifo, Tonga · 1839 days ago · 190 km deep · 84 km away
- 4.4115 km SSW of Hihifo, Tonga · 1840 days ago · 163 km deep · 15 km away
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000fu4q. Read Wed, Sep 30, 2026, 6:16 AM UTC.