Tonga earthquakes

M4.9 earthquake 74 km NNE of Hihifo, Tonga

A magnitude 4.9 earthquake struck 74 km NNE of Hihifo, Tonga on Sat, Feb 17, 2018, 2:26 PM GMT+14 (00:26 UTC), 35 km (22 mi) below the surface.

A larger quake followed: M5.1 92 km NNE 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, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-02-17 00:26:04 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
15.384° S, 173.426° 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 11.6 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
81°
Stations used
161

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.4125 km NE of Hihifo, Tonga · 3137 days ago · 10 km deep · 52 km away
  2. 4.982 km NNE of Hihifo, Tonga · 3136 days ago · 36 km deep · 9 km away
  3. 5.093 km ENE of Hihifo, Tonga · 3133 days ago · 10 km deep · 48 km away
  4. 4.873 km NE of Hihifo, Tonga · 3129 days ago · 10 km deep · 17 km away
  5. 4.697 km NNE of Hihifo, Tonga · 3123 days ago · 10 km deep · 30 km away
  6. 5.192 km NNE of Hihifo, Tonga · 3107 days ago · 10 km deep · 22 km away
  7. 4.475 km ESE of Hihifo, Tonga · 3093 days ago · 35 km deep · 94 km away
  8. 4.899 km ENE of Hihifo, Tonga · 3092 days ago · 71 km deep · 44 km away
  9. 4.5103 km NNE of Hihifo, Tonga · 3091 days ago · 35 km deep · 29 km away

Before

  1. 5.1103 km NE of Hihifo, Tonga · 3156 days ago · 10 km deep · 42 km away
  2. 4.4Samoa Islands region · 3169 days ago · 10 km deep · 81 km away
  3. 4.3Tonga · 3175 days ago · 117 km deep · 100 km away
  4. 4.4115 km NE of Hihifo, Tonga · 3176 days ago · 10 km deep · 42 km away
  5. 4.8100 km NE of Hihifo, Tonga · 3178 days ago · 38 km deep · 28 km away
  6. 4.7103 km NNE of Hihifo, Tonga · 3179 days ago · 10 km deep · 37 km away
  7. 5.1146 km SSW of Gataivai, Samoa · 3179 days ago · 10 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000d8c0. Read Fri, Oct 2, 2026, 9:15 AM UTC.