Tonga earthquakes

M4.0 earthquake 283 km WNW of Houma, Tonga

A magnitude 4.0 earthquake struck 283 km WNW of Houma, Tonga on Tue, Aug 15, 2023, 3:04 PM GMT+13 (02:04 UTC), 502 km (312 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.

Open the live map with earthquakes

The earthquake

Magnitude
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-08-15 02:04:49 UTC
Depth
501.7 km (311.8 mi), deep
Epicenter
20.067° S, 177.761° 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 12.5 km horizontally, 9.9 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
64°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 34 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.0Fiji region · 1144 days ago · 578 km deep · 73 km away
  2. 4.5265 km WNW of Houma, Tonga · 1143 days ago · 493 km deep · 29 km away
  3. 4.2Fiji region · 1141 days ago · 596 km deep · 77 km away
  4. 4.5270 km WNW of Houma, Tonga · 1140 days ago · 533 km deep · 62 km away
  5. 4.3Fiji region · 1139 days ago · 588 km deep · 71 km away
  6. 4.3262 km WNW of Houma, Tonga · 1138 days ago · 376 km deep · 41 km away · felt by 1
  7. 4.3241 km WNW of Houma, Tonga · 1138 days ago · 504 km deep · 54 km away
  8. 4.4Fiji region · 1136 days ago · 602 km deep · 65 km away
  9. 4.3Fiji region · 1135 days ago · 541 km deep · 87 km away
  10. 4.5259 km WNW of Houma, Tonga · 1131 days ago · 529 km deep · 41 km away
  11. 4.0283 km WNW of Houma, Tonga · 1130 days ago · 516 km deep · 27 km away
  12. 4.0289 km WNW of Houma, Tonga · 1128 days ago · 540 km deep · 28 km away
  13. 4.3Fiji region · 1126 days ago · 598 km deep · 91 km away
  14. 4.3Fiji region · 1125 days ago · 532 km deep · 79 km away
  15. 4.2Fiji region · 1123 days ago · 531 km deep · 31 km away
  16. 4.4Fiji region · 1121 days ago · 527 km deep · 46 km away
  17. 4.1287 km NW of Houma, Tonga · 1120 days ago · 552 km deep · 57 km away
  18. 4.5286 km WNW of Houma, Tonga · 1120 days ago · 494 km deep · 15 km away
  19. 4.0299 km WNW of Houma, Tonga · 1118 days ago · 559 km deep · 16 km away
  20. 4.3Fiji region · 1112 days ago · 600 km deep · 72 km away
  21. 4.0284 km WNW of Houma, Tonga · 1112 days ago · 509 km deep · 10 km away
  22. 4.4280 km WNW of Houma, Tonga · 1111 days ago · 496 km deep · 13 km away
  23. 4.4Fiji region · 1110 days ago · 567 km deep · 71 km away
  24. 4.5Fiji region · 1108 days ago · 542 km deep · 96 km away
  25. 4.5257 km WNW of Houma, Tonga · 1104 days ago · 527 km deep · 31 km away
  26. 4.3Fiji region · 1104 days ago · 598 km deep · 48 km away
  27. 4.4Fiji region · 1100 days ago · 553 km deep · 97 km away
  28. 4.9Fiji region · 1099 days ago · 596 km deep · 86 km away
  29. 4.3297 km W of Houma, Tonga · 1099 days ago · 623 km deep · 89 km away
  30. 4.3273 km WNW of Houma, Tonga · 1097 days ago · 507 km deep · 23 km away
  31. 4.7250 km WNW of Houma, Tonga · 1094 days ago · 503 km deep · 54 km away
  32. 4.2297 km WNW of Houma, Tonga · 1091 days ago · 564 km deep · 43 km away
  33. 4.7261 km WNW of Houma, Tonga · 1089 days ago · 500 km deep · 24 km away
  34. 4.3256 km WNW of Houma, Tonga · 1086 days ago · 541 km deep · 30 km away

Before

  1. 4.2282 km WNW of Houma, Tonga · 1147 days ago · 528 km deep · 2 km away
  2. 4.3268 km WNW of Houma, Tonga · 1147 days ago · 529 km deep · 25 km away
  3. 4.2Fiji region · 1147 days ago · 539 km deep · 36 km away
  4. 4.4296 km WNW of Houma, Tonga · 1148 days ago · 536 km deep · 24 km away
  5. 4.1264 km WNW of Houma, Tonga · 1150 days ago · 557 km deep · 20 km away
  6. 4.1Fiji region · 1153 days ago · 420 km deep · 38 km away
  7. 4.4Fiji region · 1159 days ago · 394 km deep · 33 km away
  8. 4.1292 km NW of Houma, Tonga · 1171 days ago · 545 km deep · 50 km away

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000kqft. Read Fri, Oct 2, 2026, 8:30 AM UTC.