Tonga earthquakes

M4.4 earthquake 138 km SW of Hihifo, Tonga

A magnitude 4.4 earthquake struck 138 km SW of Hihifo, Tonga on Thu, Sep 24, 2020, 4:38 AM GMT-12 (16:38 UTC), 213 km (132 mi) below the surface.

A larger quake followed: M4.9 133 km SSW of Hihifo, Tonga. This one was a foreshock.

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The earthquake

Magnitude
4.4 (mb), light
Local time
UTC
2020-09-24 16:38:23 UTC
Depth
212.7 km (132.1 mi), intermediate-depth
Epicenter
16.925° S, 174.614° 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 9.8 km horizontally, 6.3 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
64°
Stations used
74

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.5110 km WSW of Hihifo, Tonga · 2177 days ago · 10 km deep · 84 km away
  2. 4.8148 km N of Neiafu, Tonga · 2177 days ago · 54 km deep · 91 km away
  3. 4.3159 km NW of Neiafu, Tonga · 2171 days ago · 210 km deep · 83 km away
  4. 4.2106 km SSW of Hihifo, Tonga · 2166 days ago · 141 km deep · 60 km away
  5. 4.9133 km SSW of Hihifo, Tonga · 2150 days ago · 134 km deep · 53 km away
  6. 4.377 km SW of Hihifo, Tonga · 2148 days ago · 110 km deep · 61 km away

Before

  1. 4.462 km SSW of Hihifo, Tonga · 2200 days ago · 77 km deep · 78 km away
  2. 4.4143 km SSW of Hihifo, Tonga · 2205 days ago · 131 km deep · 44 km away
  3. 4.5145 km N of Neiafu, Tonga · 2215 days ago · 74 km deep · 80 km away
  4. 4.546 km SSW of Hihifo, Tonga · 2218 days ago · 59 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000c36d. Read Wed, Sep 30, 2026, 11:49 PM UTC.