M4.0 earthquake 106 km SSW of Hihifo, Tonga
A magnitude 4.0 earthquake struck 106 km SSW of Hihifo, Tonga on Fri, Feb 26, 2021, 9:28 PM GMT-12 (09:28 UTC), 99 km (61 mi) below the surface.
A larger quake followed: M4.6 63 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
- 4.0 (mb), light
- Local time
- UTC
- 2021-02-27 09:28:52 UTC
- Depth
- 98.5 km (61.2 mi), intermediate-depth
- Epicenter
- 16.860° S, 174.145° 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, 11.6 km in depth
- Magnitude uncertainty
- ±0.21
- Depth from
- From location
- Station coverage gap
- 81°
- Stations used
- 11
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.4143 km SSW of Hihifo, Tonga · 2032 days ago · 87 km deep · 37 km away
- 4.4110 km SSW of Hihifo, Tonga · 2030 days ago · 140 km deep · 4 km away
- 4.663 km SSE of Hihifo, Tonga · 2030 days ago · 7 km deep · 74 km away
- 4.685 km SSW of Hihifo, Tonga · 2003 days ago · 125 km deep · 23 km away
- 4.1111 km WSW of Hihifo, Tonga · 1994 days ago · 298 km deep · 86 km away
- 4.2139 km WSW of Hihifo, Tonga · 1988 days ago · 305 km deep · 86 km away
- 4.529 km SW of Hihifo, Tonga · 1983 days ago · 10 km deep · 81 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000dfib. Read Wed, Sep 30, 2026, 1:02 AM UTC.