M4.5 earthquake 137 km SSE of ‘Ohonua, Tonga
A magnitude 4.5 earthquake struck 137 km SSE of ‘Ohonua, Tonga on Sun, Oct 31, 2021, 11:22 AM GMT+13 (22:22 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.2 152 km SSE of ‘Ohonua, 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
- 2021-10-30 22:22:24 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 22.461° S, 174.404° 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 8.3 km horizontally, 1.9 km in depth
- Magnitude uncertainty
- ±0.20
- Depth from
- Operator assigned
- Station coverage gap
- 93°
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.7148 km S of ‘Ohonua, Tonga · 1794 days ago · 10 km deep · 47 km away
- 4.8Tonga region · 1794 days ago · 10 km deep · 87 km away
- 4.2148 km SSE of ‘Ohonua, Tonga · 1787 days ago · 10 km deep · 26 km away
- 5.2152 km SSE of ‘Ohonua, Tonga · 1777 days ago · 10 km deep · 21 km away
- 5.167 km SE of ‘Ohonua, Tonga · 1747 days ago · 10 km deep · 75 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000frff. Read Wed, Sep 30, 2026, 9:37 AM UTC.