Tonga earthquakes

M4.9 earthquake 217 km S of ‘Ohonua, Tonga

A magnitude 4.9 earthquake struck 217 km S of ‘Ohonua, Tonga on Fri, Dec 28, 2018, 12:26 AM GMT+13 (11:26 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.2 147 km SSE of ‘Ohonua, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

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, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-12-27 11:26:28 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
23.289° S, 174.730° 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 7.0 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.16
Depth from
Operator assigned
Station coverage gap
102°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 5 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.9210 km S of ‘Ohonua, Tonga · 2835 days ago · 10 km deep · 10 km away
  2. 4.9262 km S of ‘Ohonua, Tonga · 2832 days ago · 10 km deep · 47 km away
  3. 5.1161 km SSE of ‘Ohonua, Tonga · 2817 days ago · 10 km deep · 85 km away
  4. 5.2147 km SSE of ‘Ohonua, Tonga · 2807 days ago · 10 km deep · 88 km away
  5. 4.7273 km S of ‘Ohonua, Tonga · 2776 days ago · 10 km deep · 71 km away

Before

  1. 4.7219 km S of ‘Ohonua, Tonga · 2835 days ago · 10 km deep · 6 km away
  2. 5.1210 km S of ‘Ohonua, Tonga · 2835 days ago · 10 km deep · 19 km away
  3. 4.7236 km S of ‘Ohonua, Tonga · 2838 days ago · 10 km deep · 20 km away
  4. 4.5173 km SSE of ‘Ohonua, Tonga · 2857 days ago · 10 km deep · 89 km away
  5. 4.4202 km SSE of ‘Ohonua, Tonga · 2858 days ago · 10 km deep · 50 km away
  6. 4.8186 km SSE of ‘Ohonua, Tonga · 2858 days ago · 10 km deep · 55 km away
  7. 5.1156 km S of ‘Ohonua, Tonga · 2858 days ago · 10 km deep · 62 km away
  8. 4.8173 km S of ‘Ohonua, Tonga · 2862 days ago · 10 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000j44y. Read Thu, Oct 1, 2026, 5:25 AM UTC.