Tonga earthquakes

M4.5 earthquake 73 km S of Hihifo, Tonga

A magnitude 4.5 earthquake struck 73 km S of Hihifo, Tonga on Sat, Oct 22, 2016, 9:56 AM GMT+14 (19:56 UTC), 54 km (34 mi) below the surface.

A larger quake followed: M5.0 73 km E 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, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-10-21 19:56:28 UTC
Depth
54.3 km (33.7 mi), shallow
Epicenter
16.617° S, 173.703° 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 13.1 km horizontally, 13.3 km in depth
Magnitude uncertainty
±0.20
Depth from
From location
Station coverage gap
127°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.985 km SSW of Hihifo, Tonga · 3630 days ago · 110 km deep · 38 km away
  2. 4.511 km NNW of Hihifo, Tonga · 3626 days ago · 80 km deep · 85 km away
  3. 4.5148 km SSW of Hihifo, Tonga · 3625 days ago · 109 km deep · 87 km away
  4. 4.5120 km SSW of Hihifo, Tonga · 3624 days ago · 168 km deep · 65 km away
  5. 4.489 km SE of Hihifo, Tonga · 3621 days ago · 35 km deep · 52 km away
  6. 4.392 km SSE of Hihifo, Tonga · 3620 days ago · 53 km deep · 28 km away
  7. 5.073 km E of Hihifo, Tonga · 3614 days ago · 10 km deep · 93 km away
  8. 4.4134 km S of Hihifo, Tonga · 3606 days ago · 10 km deep · 62 km away
  9. 4.5108 km S of Hihifo, Tonga · 3600 days ago · 200 km deep · 44 km away
  10. 4.534 km WSW of Hihifo, Tonga · 3597 days ago · 133 km deep · 76 km away
  11. 4.7114 km SSW of Hihifo, Tonga · 3590 days ago · 128 km deep · 53 km away
  12. 5.0146 km S of Hihifo, Tonga · 3590 days ago · 75 km deep · 79 km away
  13. 4.574 km S of Hihifo, Tonga · 3589 days ago · 81 km deep · 3 km away
  14. 4.731 km SW of Hihifo, Tonga · 3585 days ago · 10 km deep · 56 km away
  15. 4.6126 km S of Hihifo, Tonga · 3579 days ago · 40 km deep · 53 km away

Before

  1. 4.3123 km SW of Hihifo, Tonga · 3652 days ago · 176 km deep · 96 km away
  2. 5.077 km E of Hihifo, Tonga · 3655 days ago · 10 km deep · 88 km away
  3. 5.241 km W of Hihifo, Tonga · 3658 days ago · 126 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us100072ev. Read Sat, Oct 3, 2026, 4:02 PM UTC.