Tonga earthquakes

M4.2 earthquake 291 km WSW of Haveluloto, Tonga

A magnitude 4.2 earthquake struck 291 km WSW of Haveluloto, Tonga on Tue, Mar 31, 2015, 11:13 AM GMT+13 (22:13 UTC), 384 km (238 mi) below the surface.

A larger quake followed: M4.8 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
2015-03-30 22:13:36 UTC
Depth
383.6 km (238.3 mi), deep
Epicenter
21.712° S, 177.966° 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.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 15.2 km horizontally, 16.7 km in depth
Magnitude uncertainty
±0.10
Depth from
FROM_LOCATION
Station coverage gap
116°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.8Fiji region · 4200 days ago · 556 km deep · 88 km away
  2. 4.1Fiji region · 4196 days ago · 414 km deep · 28 km away
  3. 4.6293 km W of Haveluloto, Tonga · 4185 days ago · 536 km deep · 99 km away
  4. 4.3Fiji region · 4179 days ago · 520 km deep · 74 km away
  5. 4.5289 km WSW of Haveluloto, Tonga · 4178 days ago · 375 km deep · 44 km away
  6. 4.0268 km WSW of Haveluloto, Tonga · 4176 days ago · 369 km deep · 57 km away
  7. 4.4295 km W of Haveluloto, Tonga · 4174 days ago · 580 km deep · 69 km away
  8. 4.5Fiji region · 4164 days ago · 556 km deep · 89 km away
  9. 4.7298 km W of Haveluloto, Tonga · 4162 days ago · 485 km deep · 71 km away
  10. 4.7Fiji region · 4161 days ago · 465 km deep · 59 km away
  11. 4.3Fiji region · 4158 days ago · 487 km deep · 85 km away
  12. 4.2Fiji region · 4151 days ago · 606 km deep · 93 km away

Before

  1. 4.5Fiji region · 4214 days ago · 569 km deep · 98 km away
  2. 5.2south of the Fiji Islands · 4215 days ago · 337 km deep · 64 km away
  3. 4.5Fiji region · 4224 days ago · 534 km deep · 92 km away
  4. 4.3299 km W of Haveluloto, Tonga · 4226 days ago · 499 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10001ve9. Read Sun, Oct 4, 2026, 8:32 PM UTC.