Tonga earthquakes

M4.2 earthquake 298 km NW of Haveluloto, Tonga

A magnitude 4.2 earthquake struck 298 km NW of Haveluloto, Tonga on Mon, Jul 9, 2018, 4:13 AM GMT+13 (15:13 UTC), 563 km (350 mi) below the surface.

A larger quake followed: M5.0 Fiji region. 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-07-08 15:13:39 UTC
Depth
563.4 km (350.1 mi), deep
Epicenter
19.393° S, 177.375° 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 17.6 km horizontally, 16.8 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
230°, poorly surrounded by stations
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 4.3Fiji region · 3006 days ago · 512 km deep · 89 km away
  2. 4.4Fiji region · 2993 days ago · 585 km deep · 61 km away
  3. 4.2266 km WNW of Haveluloto, Tonga · 2992 days ago · 545 km deep · 61 km away
  4. 4.3Fiji region · 2991 days ago · 431 km deep · 67 km away
  5. 4.3Fiji region · 2987 days ago · 548 km deep · 15 km away
  6. 4.4Fiji region · 2987 days ago · 460 km deep · 44 km away
  7. 4.2Fiji region · 2981 days ago · 606 km deep · 69 km away
  8. 4.3Fiji region · 2973 days ago · 599 km deep · 71 km away
  9. 4.3Fiji region · 2969 days ago · 558 km deep · 17 km away
  10. 4.4Fiji region · 2967 days ago · 590 km deep · 13 km away
  11. 4.2291 km WNW of Haveluloto, Tonga · 2967 days ago · 576 km deep · 60 km away
  12. 5.0Fiji region · 2966 days ago · 578 km deep · 80 km away
  13. 4.1264 km WNW of Haveluloto, Tonga · 2964 days ago · 531 km deep · 90 km away
  14. 4.3Fiji region · 2956 days ago · 316 km deep · 59 km away
  15. 4.2262 km WNW of Haveluloto, Tonga · 2955 days ago · 508 km deep · 82 km away
  16. 4.1276 km NW of Haveluloto, Tonga · 2951 days ago · 533 km deep · 40 km away
  17. 4.3Fiji region · 2949 days ago · 592 km deep · 90 km away

Before

  1. 4.3Fiji region · 3011 days ago · 403 km deep · 66 km away
  2. 4.2286 km NW of Haveluloto, Tonga · 3018 days ago · 422 km deep · 18 km away
  3. 4.2Fiji region · 3020 days ago · 555 km deep · 24 km away
  4. 4.3Fiji region · 3020 days ago · 589 km deep · 46 km away
  5. 4.7Fiji region · 3021 days ago · 554 km deep · 75 km away
  6. 4.3268 km WNW of Haveluloto, Tonga · 3022 days ago · 544 km deep · 81 km away
  7. 4.4298 km NW of Haveluloto, Tonga · 3023 days ago · 505 km deep · 32 km away
  8. 4.2267 km WNW of Haveluloto, Tonga · 3026 days ago · 526 km deep · 80 km away
  9. 4.2Fiji region · 3034 days ago · 563 km deep · 45 km away
  10. 4.2276 km WNW of Haveluloto, Tonga · 3037 days ago · 535 km deep · 72 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000g42h. Read Fri, Oct 2, 2026, 6:26 AM UTC.