Tonga earthquakes

M4.5 earthquake 276 km WNW of Houma, Tonga

A magnitude 4.5 earthquake struck 276 km WNW of Houma, Tonga on Sat, Aug 15, 2026, 5:31 PM GMT+13 (04:31 UTC), 543 km (337 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2026-08-15 04:31:18 UTC
Depth
543.1 km (337.5 mi), deep
Epicenter
20.473° S, 177.855° 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 11.3 km horizontally, 6.5 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
99°
Stations used
36

Nearest places

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

Nearby

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

After

  1. 4.5280 km WNW of Houma, Tonga · 48 days ago · 408 km deep · 53 km away
  2. 4.2280 km WNW of Houma, Tonga · 47 days ago · 506 km deep · 40 km away
  3. 4.4278 km NW of Houma, Tonga · 42 days ago · 541 km deep · 95 km away
  4. 4.9265 km WNW of Houma, Tonga · 38 days ago · 519 km deep · 16 km away
  5. 4.3255 km W of Houma, Tonga · 35 days ago · 391 km deep · 95 km away
  6. 5.0Fiji region · 34 days ago · 536 km deep · 28 km away
  7. 4.6Fiji region · 26 days ago · 502 km deep · 37 km away
  8. 4.1256 km WNW of Houma, Tonga · 18 days ago · 423 km deep · 27 km away
  9. 4.5280 km WNW of Houma, Tonga · 15 days ago · 513 km deep · 11 km away
  10. 4.7Fiji region · 7 days ago · 573 km deep · 71 km away
  11. 4.3248 km W of Houma, Tonga · 4 days ago · 434 km deep · 89 km away

Before

  1. 4.0Fiji region · 54 days ago · 559 km deep · 83 km away
  2. 4.1Fiji region · 58 days ago · 468 km deep · 94 km away
  3. 4.3Fiji region · 61 days ago · 494 km deep · 88 km away
  4. 4.0Fiji region · 64 days ago · 539 km deep · 57 km away
  5. 4.4Fiji region · 64 days ago · 532 km deep · 32 km away
  6. 4.1Fiji region · 68 days ago · 551 km deep · 55 km away
  7. 4.4297 km W of Houma, Tonga · 73 days ago · 475 km deep · 64 km away
  8. 4.3Fiji region · 74 days ago · 501 km deep · 67 km away
  9. 4.0Fiji region · 76 days ago · 554 km deep · 64 km away
  10. 4.2Fiji region · 76 days ago · 593 km deep · 82 km away
  11. 4.4Fiji region · 80 days ago · 532 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000tkwe. Read Mon, Oct 5, 2026, 7:16 AM UTC.