Tonga earthquakes

M4.3 earthquake 298 km W of Houma, Tonga

A magnitude 4.3 earthquake struck 298 km W of Houma, Tonga on Sun, Oct 1, 2023, 3:40 PM GMT+13 (02:40 UTC), 380 km (236 mi) below the surface.

A larger quake followed: M4.8 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
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-10-01 02:40:06 UTC
Depth
380.0 km (236.1 mi), deep
Epicenter
21.430° S, 178.170° 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 13.9 km horizontally, 10.3 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
105°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 4.6Fiji region · 1096 days ago · 598 km deep · 90 km away
  2. 4.1Fiji region · 1094 days ago · 629 km deep · 92 km away
  3. 4.4297 km WSW of Houma, Tonga · 1094 days ago · 348 km deep · 55 km away
  4. 4.1251 km W of Houma, Tonga · 1079 days ago · 479 km deep · 89 km away
  5. 4.4Fiji region · 1078 days ago · 556 km deep · 65 km away
  6. 4.2Fiji region · 1074 days ago · 544 km deep · 91 km away
  7. 4.1Fiji region · 1063 days ago · 552 km deep · 49 km away
  8. 4.1Fiji region · 1058 days ago · 506 km deep · 49 km away
  9. 4.4Fiji region · 1058 days ago · 597 km deep · 78 km away
  10. 4.8Fiji region · 1055 days ago · 561 km deep · 90 km away
  11. 4.2260 km W of Houma, Tonga · 1044 days ago · 409 km deep · 41 km away

Before

  1. 4.3Fiji region · 1098 days ago · 538 km deep · 72 km away
  2. 4.3297 km W of Houma, Tonga · 1099 days ago · 623 km deep · 72 km away
  3. 4.5Fiji region · 1108 days ago · 542 km deep · 81 km away
  4. 4.0244 km W of Houma, Tonga · 1114 days ago · 389 km deep · 57 km away
  5. 4.5Fiji region · 1114 days ago · 511 km deep · 37 km away
  6. 4.3Fiji region · 1115 days ago · 552 km deep · 95 km away
  7. 4.1Fiji region · 1117 days ago · 524 km deep · 57 km away
  8. 4.5Fiji region · 1119 days ago · 561 km deep · 74 km away
  9. 4.2Fiji region · 1120 days ago · 525 km deep · 90 km away
  10. 4.3Fiji region · 1120 days ago · 561 km deep · 78 km away
  11. 4.3Fiji region · 1122 days ago · 568 km deep · 72 km away
  12. 4.1Fiji region · 1123 days ago · 602 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000ld61. Read Fri, Oct 2, 2026, 11:33 AM UTC.