Tonga earthquakes

M4.8 earthquake 19 km W of Hihifo, Tonga

A magnitude 4.8 earthquake struck 19 km W of Hihifo, Tonga on Wed, Jul 31, 2019, 11:02 PM GMT+13 (10:02 UTC), 57 km (36 mi) below the surface.

A larger quake followed: M4.9 85 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
4.8 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-07-31 10:02:57 UTC
Depth
57.3 km (35.6 mi), shallow
Epicenter
15.971° S, 173.976° 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 12.4 km horizontally, 3.7 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
69°
Stations used
29

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 10 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.573 km SSE of Hihifo, Tonga · 2620 days ago · 35 km deep · 83 km away
  2. 4.247 km ESE of Hihifo, Tonga · 2607 days ago · 98 km deep · 65 km away
  3. 4.746 km NNE of Hihifo, Tonga · 2605 days ago · 89 km deep · 56 km away
  4. 4.575 km NNW of Hihifo, Tonga · 2579 days ago · 63 km deep · 76 km away
  5. 4.985 km N of Hihifo, Tonga · 2574 days ago · 73 km deep · 88 km away
  6. 4.549 km SE of Hihifo, Tonga · 2573 days ago · 37 km deep · 64 km away
  7. 4.977 km SW of Hihifo, Tonga · 2573 days ago · 193 km deep · 64 km away
  8. 4.662 km S of Hihifo, Tonga · 2572 days ago · 42 km deep · 62 km away
  9. 4.460 km SW of Hihifo, Tonga · 2563 days ago · 72 km deep · 50 km away
  10. 4.573 km SW of Hihifo, Tonga · 2563 days ago · 113 km deep · 58 km away

Before

  1. 4.830 km WNW of Hihifo, Tonga · 2629 days ago · 118 km deep · 13 km away
  2. 4.664 km NNW of Hihifo, Tonga · 2631 days ago · 10 km deep · 63 km away
  3. 4.551 km NE of Hihifo, Tonga · 2638 days ago · 35 km deep · 66 km away
  4. 4.955 km NW of Hihifo, Tonga · 2639 days ago · 107 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60004xwb. Read Fri, Oct 2, 2026, 5:40 PM UTC.