Tonga earthquakes

M4.7 earthquake 46 km NNE of Hihifo, Tonga

A magnitude 4.7 earthquake struck 46 km NNE of Hihifo, Tonga on Fri, Aug 16, 2019, 4:19 PM GMT+13 (03:19 UTC), 89 km (55 mi) below the surface.

A larger quake followed: M5.7 94 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
4.7 (mb), light
Local time
UTC
2019-08-16 03:19:02 UTC
Depth
89.2 km (55.4 mi), intermediate-depth
Epicenter
15.544° S, 173.698° 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 10.1 km horizontally, 6.8 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
59°
Stations used
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.7 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.398 km NNE of Hihifo, Tonga · 2593 days ago · 10 km deep · 52 km away
  2. 4.575 km NNW of Hihifo, Tonga · 2576 days ago · 63 km deep · 39 km away
  3. 5.794 km NE of Hihifo, Tonga · 2573 days ago · 10 km deep · 60 km away
  4. 4.985 km N of Hihifo, Tonga · 2572 days ago · 73 km deep · 43 km away
  5. 4.549 km SE of Hihifo, Tonga · 2571 days ago · 37 km deep · 85 km away
  6. 4.4103 km NNE of Hihifo, Tonga · 2568 days ago · 10 km deep · 58 km away
  7. 5.690 km ENE of Hihifo, Tonga · 2565 days ago · 10 km deep · 68 km away
  8. 4.7116 km NE of Hihifo, Tonga · 2553 days ago · 10 km deep · 85 km away
  9. 5.2126 km NE of Hihifo, Tonga · 2547 days ago · 10 km deep · 98 km away

Before

  1. 4.247 km ESE of Hihifo, Tonga · 2604 days ago · 98 km deep · 73 km away
  2. 4.6100 km NNE of Hihifo, Tonga · 2614 days ago · 10 km deep · 57 km away
  3. 4.819 km W of Hihifo, Tonga · 2618 days ago · 57 km deep · 56 km away
  4. 4.896 km ENE of Hihifo, Tonga · 2621 days ago · 10 km deep · 79 km away
  5. 4.830 km WNW of Hihifo, Tonga · 2626 days ago · 118 km deep · 56 km away
  6. 4.664 km NNW of Hihifo, Tonga · 2629 days ago · 10 km deep · 37 km away
  7. 4.9102 km NNE of Hihifo, Tonga · 2632 days ago · 10 km deep · 59 km away · felt by 3

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us600055sc. Read Wed, Sep 30, 2026, 3:50 AM UTC.