Tonga earthquakes

M4.9 earthquake 85 km N of Hihifo, Tonga

A magnitude 4.9 earthquake struck 85 km N of Hihifo, Tonga on Mon, Sep 16, 2019, 12:43 AM GMT+13 (11:43 UTC), 73 km (45 mi) below the surface.

A larger quake followed: M5.9 121 km NE 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
4.9 (mb), light
Local time
UTC
2019-09-15 11:43:40 UTC
Depth
72.8 km (45.2 mi), intermediate-depth
Epicenter
15.186° S, 173.851° 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 10.3 km horizontally, 6.7 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
87°
Stations used
49

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 11 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.4103 km NNE of Hihifo, Tonga · 2569 days ago · 10 km deep · 49 km away
  2. 5.690 km ENE of Hihifo, Tonga · 2566 days ago · 10 km deep · 95 km away
  3. 4.7116 km NE of Hihifo, Tonga · 2554 days ago · 10 km deep · 97 km away
  4. 4.8132 km NNE of Hihifo, Tonga · 2536 days ago · 10 km deep · 69 km away
  5. 5.9121 km NE of Hihifo, Tonga · 2536 days ago · 29 km deep · 91 km away · felt by 4
  6. 4.5109 km NE of Hihifo, Tonga · 2536 days ago · 10 km deep · 94 km away
  7. 4.3109 km NE of Hihifo, Tonga · 2533 days ago · 10 km deep · 97 km away
  8. 4.586 km NE of Hihifo, Tonga · 2527 days ago · 10 km deep · 66 km away
  9. 5.280 km ENE of Hihifo, Tonga · 2518 days ago · 10 km deep · 97 km away
  10. 4.560 km N of Hihifo, Tonga · 2518 days ago · 110 km deep · 25 km away
  11. 4.693 km NE of Hihifo, Tonga · 2515 days ago · 10 km deep · 66 km away

Before

  1. 5.794 km NE of Hihifo, Tonga · 2574 days ago · 10 km deep · 75 km away
  2. 4.575 km NNW of Hihifo, Tonga · 2577 days ago · 63 km deep · 14 km away
  3. 4.398 km NNE of Hihifo, Tonga · 2593 days ago · 10 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005gn5. Read Wed, Sep 30, 2026, 9:36 PM UTC.