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Strong mag. 5.6 earthquake - South Pacific Ocean, 16 km southeast of Neiafu, Vava'u, Tonga, on Wednesday, Jul 27, 2022 at 10:36 pm (GMT +13) -

Strong mag. 5.6 earthquake - South Pacific Ocean, 16 km southeast of Neiafu, Vava\'u, Tonga, on Wednesday, Jul 27, 2022 at 10:36 pm (GMT +13) Strong mag. 5.6 earthquake - South Pacific Ocean, 16 km southeast of Neiafu, Vava\'u, Tonga, on Wednesday, Jul 27, 2022 at 10:36 pm (GMT +13)

Strong magnitude 5.6 earthquake at 10 km depth

27 Jul 09:48 UTC: First to report: GFZ after 12 minutes.
27 Jul 09:58: Now using data updates from USGS
27 Jul 14:16: Magnitude recalculated from 5.5 to 5.6. Epicenter location corrected by 17 km (10.9 mi) towards W.
Update Wed, 27 Jul 2022, 09:54

Significant magnitude 5.6 quake hits 39 km southeast of Neiafu, Tonga late at night

5.6 quake 27 Jul 10:36 pm (GMT +13)
5.6 quake 27 Jul 10:36 pm (GMT +13)
Tonga was shaken near Neiafu, Vava'u, by an earthquake of magnitude 5.6 only 17 minutes ago, the German Research Centre for Geosciences (GFZ) reported.
The quake hit at a shallow depth of 10 km beneath the epicenter near Neiafu, Vava'u, Tonga, late at night on Wednesday, July 27th, 2022, at 10:36 pm local time. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 5.6 as well. Other agencies reporting the same quake include France's Réseau National de Surveillance Sismique (RéNaSS) at magnitude 5.4, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 5.7.
Generally quakes of this magnitude are recorded by more than one agency and the results can vary, with subsequent reports that come in after the first one often showing more accuracy.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Neiafu (pop. 4,300) located 39 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Bangai (pop. 1,700) located 119 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake details

Date & timeJul 27, 2022 09:36:51 UTC -
Local time at epicenterWednesday, Jul 27, 2022 at 10:36 pm (GMT +13)
Depth10.0 km
Epicenter latitude / longitude18.7282°S / 173.8523°W (South Pacific Ocean, Tonga)
Antipode18.728°N / 6.148°E
Shaking intensityStrong shaking
Felt2 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoUnnamed 50 km NW of Vava’u (Tonga) (70 km / 43 mi)
Nearby towns and cities16 km (10 mi) ESE of Neiafu (pop: 4,320) | Show on map | Quakes nearby
132 km (82 mi) NNE of Bangai (Pangai) (pop: 1,740) | Show on map | Quakes nearby
296 km (184 mi) NNE of Kolonga (pop: 1,100) | Show on map | Quakes nearby
303 km (188 mi) NNE of Nukalofa (Nuku'alofa) (pop: 22,400) | Show on map | Quakes nearby
303 km (188 mi) NNE of Nuku‘alofa (pop: 22,400) | Show on map | Quakes nearby
309 km (192 mi) S of Hihifo (pop: 815) | Show on map | Quakes nearby
312 km (194 mi) NNE of ‘Ohonua (Ohonua) (pop: 1,240) | Show on map | Quakes nearby
306 km (190 mi) NNE of Amsterdam Island (pop: 75,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 24.9°C (77 F), humidity: 67%, wind: 8 m/s (15 kts) from ESE
Estimated seismic energy released1.6 x 1013 joules (4.4 gigawatt hours, equivalent to 3788 tons of TNT or 0.2 atomic bombs!) | about seismic energy
Show interactive Map
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
5.610 km16 Km ESE of Neiafu, TongaUSGS
5.410 kmTonga: Near NouméaRENASS
5.610 kmTonga IslandsRaspberryShake
5.619 kmTonga IslandsGFZ
5.653 kmTonga IslandsGeoAu


Seismic station: Afiamalu, Samoa (AFI/IU network) | Distance from quake: 580 km / 360 mi | Show on map | Station Info
Seismic station Afiamalu, Samoa: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Neiafu,Vava'u Tonga (318.1 km SSW of epicenter) [Map] / Strong shaking (MMI VI) / rattling, vibrating / 2-5 s : I was listening to radio 95.7fm and a sudden single vertical shook/drop and a few lateral movement followed.My radio device dropped off the desk and the poor dog uneasy park into the dark.  
Vavau / Strong shaking (MMI VI) / vertical swinging (up and down) / 1-2 s : Woken up from a sleep. Felt very intense shaking and heard things in the kitchen breaking. Very scary  
I was far from it / not felt


[More info]

Recorded aftershocks, latest first (0 quake)

So far, no aftershocks have been registered.

Earlier earthquakes in the same area

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