Tonga earthquakes

M4.2 earthquake 277 km WNW of Houma, Tonga

A magnitude 4.2 earthquake struck 277 km WNW of Houma, Tonga on Mon, Oct 20, 2025, 12:13 AM GMT+13 (11:13 UTC), 487 km (303 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-10-19 11:13:36 UTC
Depth
487.2 km (302.7 mi), deep
Epicenter
20.583° S, 177.894° 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 14.9 km horizontally, 12.8 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
99°
Stations used
28

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.4Fiji region · 349 days ago · 408 km deep · 100 km away
  2. 4.4297 km WNW of Houma, Tonga · 347 days ago · 532 km deep · 22 km away
  3. 4.4277 km W of Houma, Tonga · 345 days ago · 475 km deep · 33 km away
  4. 4.7293 km WNW of Houma, Tonga · 344 days ago · 530 km deep · 18 km away
  5. 4.4Fiji region · 336 days ago · 551 km deep · 45 km away
  6. 4.4Fiji region · 333 days ago · 559 km deep · 67 km away
  7. 4.3Fiji region · 330 days ago · 587 km deep · 86 km away
  8. 4.4Fiji region · 329 days ago · 540 km deep · 44 km away
  9. 4.2Fiji region · 326 days ago · 607 km deep · 91 km away
  10. 4.3274 km WNW of Houma, Tonga · 325 days ago · 521 km deep · 51 km away
  11. 4.5Fiji region · 323 days ago · 526 km deep · 33 km away
  12. 4.3Fiji region · 320 days ago · 599 km deep · 93 km away
  13. 4.4Fiji region · 319 days ago · 589 km deep · 93 km away
  14. 4.3Fiji region · 314 days ago · 572 km deep · 87 km away
  15. 4.2268 km WNW of Houma, Tonga · 312 days ago · 486 km deep · 10 km away
  16. 4.4Fiji region · 311 days ago · 596 km deep · 72 km away
  17. 4.2295 km WNW of Houma, Tonga · 309 days ago · 522 km deep · 22 km away
  18. 4.0Fiji region · 309 days ago · 415 km deep · 77 km away
  19. 4.4280 km NW of Houma, Tonga · 307 days ago · 544 km deep · 100 km away
  20. 4.2260 km WNW of Houma, Tonga · 305 days ago · 529 km deep · 29 km away
  21. 4.1Fiji region · 304 days ago · 560 km deep · 48 km away
  22. 4.2275 km WNW of Houma, Tonga · 304 days ago · 531 km deep · 52 km away
  23. 4.2283 km WNW of Houma, Tonga · 298 days ago · 523 km deep · 32 km away
  24. 4.4284 km WNW of Houma, Tonga · 295 days ago · 515 km deep · 9 km away
  25. 4.9Fiji region · 293 days ago · 603 km deep · 74 km away

Before

  1. 4.2Fiji region · 351 days ago · 478 km deep · 79 km away
  2. 4.4276 km WNW of Houma, Tonga · 352 days ago · 524 km deep · 27 km away
  3. 4.5Fiji region · 360 days ago · 600 km deep · 86 km away
  4. 4.2252 km WNW of Houma, Tonga · 362 days ago · 549 km deep · 25 km away
  5. 4.2264 km WNW of Houma, Tonga · 364 days ago · 467 km deep · 23 km away
  6. 4.4Fiji region · 366 days ago · 591 km deep · 99 km away
  7. 4.6Fiji region · 372 days ago · 615 km deep · 81 km away
  8. 4.3285 km WNW of Houma, Tonga · 377 days ago · 521 km deep · 22 km away

Earthquakes todayTonga earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000rm5g. Read Sun, Oct 4, 2026, 4:20 AM UTC.