Tonga earthquakes

M4.5 earthquake 109 km NE of Hihifo, Tonga

A magnitude 4.5 earthquake struck 109 km NE of Hihifo, Tonga on Tue, Oct 22, 2019, 11:36 PM GMT+14 (09:36 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.8 103 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), light
Local time
UTC
2019-10-22 09:36:39 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.344° S, 172.993° 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 7.2 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.16
Depth from
Operator assigned
Station coverage gap
143°
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: 14 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.9143 km NE of Hihifo, Tonga · 2535 days ago · 10 km deep · 37 km away
  2. 4.3109 km NE of Hihifo, Tonga · 2533 days ago · 10 km deep · 4 km away
  3. 4.586 km NE of Hihifo, Tonga · 2527 days ago · 10 km deep · 29 km away
  4. 5.8103 km E of Hihifo, Tonga · 2518 days ago · 43 km deep · 51 km away · felt by 11
  5. 5.280 km ENE of Hihifo, Tonga · 2518 days ago · 10 km deep · 38 km away
  6. 4.560 km N of Hihifo, Tonga · 2517 days ago · 110 km deep · 85 km away
  7. 4.693 km NE of Hihifo, Tonga · 2515 days ago · 10 km deep · 28 km away
  8. 4.593 km N of Hihifo, Tonga · 2509 days ago · 35 km deep · 83 km away
  9. 4.4135 km SSW of Gataivai, Samoa · 2506 days ago · 10 km deep · 51 km away
  10. 5.292 km NNE of Hihifo, Tonga · 2503 days ago · 10 km deep · 44 km away · felt by 1
  11. 4.3141 km E of Hihifo, Tonga · 2496 days ago · 10 km deep · 89 km away
  12. 4.4138 km SW of Gataivai, Samoa · 2487 days ago · 10 km deep · 67 km away
  13. 4.6108 km NNE of Hihifo, Tonga · 2486 days ago · 10 km deep · 45 km away
  14. 4.9116 km NE of Hihifo, Tonga · 2480 days ago · 10 km deep · 16 km away

Before

  1. 5.9121 km NE of Hihifo, Tonga · 2535 days ago · 29 km deep · 19 km away · felt by 4
  2. 4.8132 km NNE of Hihifo, Tonga · 2536 days ago · 10 km deep · 63 km away
  3. 4.9155 km SSW of Lotofag?, Samoa · 2539 days ago · 10 km deep · 72 km away
  4. 5.2126 km NE of Hihifo, Tonga · 2548 days ago · 10 km deep · 19 km away
  5. 4.7116 km NE of Hihifo, Tonga · 2553 days ago · 10 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us700061ms. Read Wed, Sep 30, 2026, 9:08 AM UTC.