Tonga earthquakes

M4.6 earthquake 68 km N of Hihifo, Tonga

A magnitude 4.6 earthquake struck 68 km N of Hihifo, Tonga on Sun, Oct 18, 2020, 4:33 PM GMT+14 (02:33 UTC), 64 km (39 mi) below the surface.

A larger quake followed: M6.2 83 km NNE of Hihifo, Tonga. This one was a foreshock.

Apia forecastMore in Tonga

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
4.6 (mb), light
Local time
UTC
2020-10-18 02:33:04 UTC
Depth
63.5 km (39.5 mi), shallow
Epicenter
15.339° S, 173.731° 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 11.9 km horizontally, 4.2 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
94°
Stations used
27

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.6 and up: 12 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 5.976 km NNE of Hihifo, Tonga · 2166 days ago · 39 km deep · 33 km away · felt by 9
  2. 4.783 km NE of Hihifo, Tonga · 2166 days ago · 35 km deep · 52 km away
  3. 4.284 km NNW of Hihifo, Tonga · 2163 days ago · 10 km deep · 47 km away
  4. 4.4107 km NNE of Hihifo, Tonga · 2155 days ago · 10 km deep · 49 km away
  5. 6.283 km NNE of Hihifo, Tonga · 2154 days ago · 34 km deep · 24 km away · felt by 13
  6. 4.917 km ENE of Hihifo, Tonga · 2145 days ago · 10 km deep · 63 km away
  7. 4.6112 km N of Hihifo, Tonga · 2141 days ago · 10 km deep · 49 km away
  8. 4.4129 km NE of Hihifo, Tonga · 2135 days ago · 10 km deep · 78 km away
  9. 4.7101 km NNE of Hihifo, Tonga · 2131 days ago · 8 km deep · 38 km away
  10. 5.2103 km NE of Hihifo, Tonga · 2129 days ago · 10 km deep · 60 km away · felt by 1
  11. 4.668 km ENE of Hihifo, Tonga · 2122 days ago · 10 km deep · 66 km away
  12. 4.9138 km NNE of Hihifo, Tonga · 2117 days ago · 10 km deep · 78 km away

Before

  1. 4.6140 km NNE of Hihifo, Tonga · 2190 days ago · 10 km deep · 75 km away
  2. 5.193 km NNW of Hihifo, Tonga · 2192 days ago · 10 km deep · 41 km away
  3. 4.3108 km NNE of Hihifo, Tonga · 2197 days ago · 10 km deep · 46 km away

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000cbga. Read Wed, Sep 30, 2026, 10:20 PM UTC.