Tonga earthquakes

M4.5 earthquake 29 km SW of Hihifo, Tonga

A magnitude 4.5 earthquake struck 29 km SW of Hihifo, Tonga on Mon, Apr 26, 2021, 9:03 AM GMT+13 (20:03 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 66 km N of Hihifo, Tonga. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
2021-04-25 20:03:10 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
16.143° S, 173.991° 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 14.2 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
136°
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.459 km ESE of Hihifo, Tonga · 1980 days ago · 35 km deep · 79 km away
  2. 4.588 km SW of Hihifo, Tonga · 1976 days ago · 170 km deep · 59 km away
  3. 4.3111 km SSW of Hihifo, Tonga · 1975 days ago · 167 km deep · 86 km away
  4. 4.650 km NNE of Hihifo, Tonga · 1974 days ago · 69 km deep · 79 km away
  5. 4.766 km N of Hihifo, Tonga · 1968 days ago · 22 km deep · 91 km away
  6. 4.436 km S of Hihifo, Tonga · 1948 days ago · 80 km deep · 29 km away
  7. 4.5Tonga · 1947 days ago · 10 km deep · 58 km away
  8. 4.422 km NW of Hihifo, Tonga · 1943 days ago · 106 km deep · 35 km away
  9. 4.436 km SE of Hihifo, Tonga · 1942 days ago · 102 km deep · 45 km away
  10. 4.4101 km WNW of Hihifo, Tonga · 1938 days ago · 255 km deep · 99 km away
  11. 4.667 km ESE of Hihifo, Tonga · 1937 days ago · 7 km deep · 83 km away
  12. 4.580 km ESE of Hihifo, Tonga · 1936 days ago · 35 km deep · 93 km away
  13. 4.4114 km W of Hihifo, Tonga · 1930 days ago · 323 km deep · 93 km away

Before

  1. 4.1111 km WSW of Hihifo, Tonga · 1994 days ago · 298 km deep · 85 km away
  2. 4.685 km SSW of Hihifo, Tonga · 2003 days ago · 125 km deep · 61 km away
  3. 4.0115 km W of Hihifo, Tonga · 2012 days ago · 255 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000dyxa. Read Wed, Sep 30, 2026, 3:04 AM UTC.