Tonga earthquakes

M4.2 earthquake 296 km WNW of Houma, Tonga

A magnitude 4.2 earthquake struck 296 km WNW of Houma, Tonga on Thu, Apr 20, 2023, 10:39 AM GMT+13 (21:39 UTC), 413 km (256 mi) below the surface.

A larger quake followed: M4.5 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2023-04-19 21:39:50 UTC
Depth
412.7 km (256.4 mi), deep
Epicenter
19.987° S, 177.857° 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 14.4 km horizontally, 8.3 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
64°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 4.0Fiji region · 1261 days ago · 460 km deep · 27 km away
  2. 4.2253 km WNW of Houma, Tonga · 1261 days ago · 501 km deep · 65 km away
  3. 4.0Fiji region · 1245 days ago · 558 km deep · 68 km away
  4. 4.3Fiji region · 1245 days ago · 559 km deep · 63 km away
  5. 4.4Fiji region · 1240 days ago · 570 km deep · 59 km away
  6. 4.1Fiji region · 1238 days ago · 601 km deep · 60 km away
  7. 4.5Fiji region · 1236 days ago · 566 km deep · 98 km away
  8. 4.3277 km W of Houma, Tonga · 1229 days ago · 474 km deep · 93 km away
  9. 4.1279 km WNW of Houma, Tonga · 1224 days ago · 525 km deep · 60 km away
  10. 4.2Fiji region · 1224 days ago · 602 km deep · 85 km away
  11. 4.5297 km WNW of Houma, Tonga · 1218 days ago · 532 km deep · 74 km away
  12. 4.2Fiji region · 1217 days ago · 551 km deep · 70 km away
  13. 4.3297 km NW of Houma, Tonga · 1214 days ago · 580 km deep · 92 km away
  14. 4.3258 km NW of Houma, Tonga · 1213 days ago · 542 km deep · 66 km away
  15. 4.2Fiji region · 1212 days ago · 570 km deep · 95 km away
  16. 4.2Fiji region · 1208 days ago · 559 km deep · 30 km away
  17. 4.3Fiji region · 1206 days ago · 562 km deep · 57 km away

Before

  1. 4.2272 km WNW of Houma, Tonga · 1264 days ago · 520 km deep · 31 km away
  2. 4.1269 km WNW of Houma, Tonga · 1265 days ago · 347 km deep · 48 km away
  3. 4.4286 km WNW of Houma, Tonga · 1267 days ago · 517 km deep · 34 km away
  4. 4.3295 km NW of Houma, Tonga · 1268 days ago · 398 km deep · 40 km away
  5. 4.2Fiji region · 1274 days ago · 536 km deep · 73 km away
  6. 4.1Fiji region · 1275 days ago · 542 km deep · 60 km away
  7. 4.2Fiji region · 1276 days ago · 588 km deep · 96 km away
  8. 4.2270 km WNW of Houma, Tonga · 1278 days ago · 488 km deep · 33 km away
  9. 4.2Fiji region · 1280 days ago · 535 km deep · 39 km away
  10. 4.0267 km NW of Houma, Tonga · 1283 days ago · 563 km deep · 61 km away
  11. 4.2Fiji region · 1285 days ago · 550 km deep · 69 km away
  12. 4.7Fiji region · 1287 days ago · 523 km deep · 41 km away
  13. 4.4299 km WNW of Houma, Tonga · 1288 days ago · 484 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000jw2e. Read Fri, Oct 2, 2026, 11:37 AM UTC.