Tonga earthquakes

M4.3 earthquake 273 km W of Houma, Tonga

A magnitude 4.3 earthquake struck 273 km W of Houma, Tonga on Sat, May 20, 2023, 7:35 AM GMT+13 (18:35 UTC), 440 km (273 mi) below the surface.

A larger quake followed: M4.9 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
2023-05-19 18:35:35 UTC
Depth
439.7 km (273.2 mi), deep
Epicenter
20.990° S, 177.927° 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 13.7 km horizontally, 7.9 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
78°
Stations used
47

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 3.9Fiji region · 1229 days ago · 562 km deep · 64 km away
  2. 4.3277 km W of Houma, Tonga · 1229 days ago · 474 km deep · 19 km away
  3. 4.1279 km WNW of Houma, Tonga · 1224 days ago · 525 km deep · 52 km away
  4. 4.2Fiji region · 1224 days ago · 602 km deep · 96 km away
  5. 4.5297 km WNW of Houma, Tonga · 1218 days ago · 532 km deep · 45 km away
  6. 4.2Fiji region · 1217 days ago · 551 km deep · 56 km away
  7. 4.5Fiji region · 1213 days ago · 572 km deep · 73 km away
  8. 4.2Fiji region · 1212 days ago · 570 km deep · 44 km away
  9. 4.3Fiji region · 1210 days ago · 562 km deep · 72 km away
  10. 4.2Fiji region · 1208 days ago · 559 km deep · 92 km away
  11. 4.5Fiji region · 1208 days ago · 605 km deep · 87 km away
  12. 4.3Fiji region · 1206 days ago · 562 km deep · 68 km away
  13. 4.7Fiji region · 1204 days ago · 554 km deep · 76 km away
  14. 4.0Fiji region · 1201 days ago · 533 km deep · 65 km away
  15. 4.6255 km WNW of Houma, Tonga · 1201 days ago · 481 km deep · 69 km away
  16. 4.4269 km WNW of Houma, Tonga · 1196 days ago · 487 km deep · 81 km away
  17. 4.9Fiji region · 1191 days ago · 524 km deep · 72 km away
  18. 4.0Fiji region · 1191 days ago · 553 km deep · 84 km away
  19. 4.2Fiji region · 1185 days ago · 553 km deep · 83 km away
  20. 4.2Fiji region · 1184 days ago · 566 km deep · 22 km away
  21. 4.8Fiji region · 1183 days ago · 571 km deep · 79 km away
  22. 4.1284 km WNW of Houma, Tonga · 1181 days ago · 514 km deep · 57 km away

Before

  1. 4.1Fiji region · 1238 days ago · 601 km deep · 97 km away
  2. 4.1Fiji region · 1244 days ago · 539 km deep · 59 km away
  3. 4.0Fiji region · 1245 days ago · 558 km deep · 69 km away
  4. 4.4Fiji region · 1246 days ago · 536 km deep · 49 km away
  5. 4.3210 km W of Houma, Tonga · 1252 days ago · 292 km deep · 82 km away
  6. 4.2Fiji region · 1253 days ago · 565 km deep · 91 km away
  7. 4.2253 km WNW of Houma, Tonga · 1261 days ago · 501 km deep · 58 km away
  8. 4.0Fiji region · 1261 days ago · 460 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000k3t2. Read Fri, Oct 2, 2026, 11:44 AM UTC.