Tonga earthquakes

M4.4 earthquake 143 km SSW of Hihifo, Tonga

A magnitude 4.4 earthquake struck 143 km SSW of Hihifo, Tonga on Sun, Mar 7, 2021, 4:16 AM GMT-12 (16:16 UTC), 87 km (54 mi) below the surface.

A larger quake followed: M4.6 85 km SSW of Hihifo, Tonga. This one was a foreshock.

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The earthquake

Magnitude
4.4 (mb), light
Local time
UTC
2021-03-07 16:16:20 UTC
Depth
87.3 km (54.2 mi), intermediate-depth
Epicenter
17.184° S, 174.213° 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 13.6 km horizontally, 10.0 km in depth
Magnitude uncertainty
±0.22
Depth from
From location
Station coverage gap
101°
Stations used
11

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.4110 km SSW of Hihifo, Tonga · 2030 days ago · 140 km deep · 33 km away
  2. 4.685 km SSW of Hihifo, Tonga · 2003 days ago · 125 km deep · 58 km away
  3. 4.3181 km NW of Neiafu, Tonga · 1994 days ago · 282 km deep · 85 km away
  4. 4.2139 km WSW of Hihifo, Tonga · 1988 days ago · 305 km deep · 98 km away
  5. 4.588 km SW of Hihifo, Tonga · 1976 days ago · 170 km deep · 70 km away
  6. 4.3111 km SSW of Hihifo, Tonga · 1975 days ago · 167 km deep · 32 km away

Before

  1. 4.0106 km SSW of Hihifo, Tonga · 2041 days ago · 99 km deep · 37 km away
  2. 4.3174 km SW of Hihifo, Tonga · 2054 days ago · 262 km deep · 67 km away
  3. 4.9148 km SSW of Hihifo, Tonga · 2061 days ago · 157 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000djvb. Read Wed, Sep 30, 2026, 1:02 AM UTC.