M4.0 earthquake 115 km W of Hihifo, Tonga
A magnitude 4.0 earthquake struck 115 km W of Hihifo, Tonga on Sat, Mar 27, 2021, 12:05 PM GMT-12 (00:05 UTC), 255 km (159 mi) below the surface.
A larger quake followed: M4.6 172 km WNW 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
- 2021-03-28 00:05:23 UTC
- Depth
- 255.2 km (158.5 mi), intermediate-depth
- Epicenter
- 16.008° S, 174.875° 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 14.9 km horizontally, 8.6 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- From location
- Station coverage gap
- 125°
- Stations used
- 21
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6172 km WNW of Hihifo, Tonga · 2012 days ago · 274 km deep · 82 km away
- 4.1111 km WSW of Hihifo, Tonga · 1995 days ago · 298 km deep · 40 km away
- 4.2139 km WSW of Hihifo, Tonga · 1989 days ago · 305 km deep · 67 km away
- 4.529 km SW of Hihifo, Tonga · 1984 days ago · 10 km deep · 96 km away
- 4.588 km SW of Hihifo, Tonga · 1976 days ago · 170 km deep · 85 km away
- 4.2166 km W of Hihifo, Tonga · 1962 days ago · 330 km deep · 51 km away
- 4.4172 km WNW of Hihifo, Tonga · 1959 days ago · 369 km deep · 85 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000dzf7. Read Wed, Sep 30, 2026, 12:21 PM UTC.