Strong mag. 5.5 earthquake - South Pacific Ocean, 97 km northeast of Nukalofa, Nuku'alofa, Tongatapu, on Monday, Jun 20, 2022 at 12:49 am (GMT +13) -

Strong mag. 5.5 earthquake - South Pacific Ocean, 97 km northeast of Nukalofa, Nuku\'alofa, Tongatapu, on Monday, Jun 20, 2022 at 12:49 am (GMT +13) Strong mag. 5.5 earthquake - South Pacific Ocean, 97 km northeast of Nukalofa, Nuku\'alofa, Tongatapu, on Monday, Jun 20, 2022 at 12:49 am (GMT +13)

Strong magnitude 5.5 earthquake at 39 km depth

19 Jun 12:00 UTC: First to report: GFZ after 11 minutes.
19 Jun 12:02: Magnitude recalculated from 5.7 to 5.6. Epicenter location corrected by 4.3 km (2.7 mi) towards WNW.
19 Jun 12:10: Now using data updates from USGS
19 Jun 12:19: Magnitude recalculated from 5.3 to 5.5. Hypocenter depth recalculated from 40.6 to 39.1 km (from 25 to 24 mi). Epicenter location corrected by 1.6 km (1 mi) towards SW.
Update Sun, 19 Jun 2022, 12:06
Significant magnitude 5.6 quake hits 105 km northeast of Nukalofa, Tonga after midnight
5.6 quake 20 Jun 12:49 am (GMT +13)
5.6 quake 20 Jun 12:49 am (GMT +13)
A shallow magnitude 5.6 earthquake was reported after midnight near Nukalofa, Nuku'alofa, Tongatapu, Tonga.
According to the German Research Centre for Geosciences (GFZ), the quake hit on Monday, June 20th, 2022, at 12:49 am local time at a shallow depth of 10 km. 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. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.6.
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 Bangai (pop. 1,700) located 72 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Kolonga (pop. 1,100) located 100 km from the epicenter, Nukalofa (pop. 22,400) 105 km away, Nuku'alofa (pop. 22,400) 105 km away, Lapaha (pop. 8,000) 106 km away, Haveluloto (pop. 3,400) 107 km away, and 'Ohonua (pop. 1,200) 121 km away.
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 data

Earthquake details

Date & timeJun 19, 2022 11:49:20 UTC -
Local time at epicenterMonday, Jun 20, 2022 at 12:49 am (GMT +13)
Depth39.1 km
Epicenter latitude / longitude20.3489°S / 174.8098°W (South Pacific Ocean, Tonga)
Antipode20.349°N / 5.19°E
Shaking intensityModerate shaking near epicenter
Felt1 report
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoHunga Tonga-Hunga Ha'apai (64 km / 40 mi)
Nearby towns and cities76 km (47 mi) SW of Bangai (Pangai) (pop: 1,740) | Show on map | Quakes nearby
91 km (57 mi) NNE of Kolonga (pop: 1,100) | Show on map | Quakes nearby
97 km (60 mi) NNE of Nukalofa (Nuku'alofa) (pop: 22,400) | Show on map | Quakes nearby
97 km (60 mi) NNE of Nuku‘alofa (pop: 22,400) | Show on map | Quakes nearby
110 km (69 mi) N of ‘Ohonua (Ohonua) (pop: 1,240) | Show on map | Quakes nearby
208 km (129 mi) SSW of Neiafu (pop: 4,320) | Show on map | Quakes nearby
100 km (62 mi) NNE of Amsterdam Island (pop: 75,000) | Show on map | Quakes nearby
Weather at epicenter at time of quakeLight Rain 25.6°C (78 F), humidity: 85%, wind: 8 m/s (15 kts) from NE
Estimated seismic energy released1.1 x 1013 joules (3.12 gigawatt hours, equivalent to 2682 tons of TNT or 0.2 atomic bombs!) | about seismic energy
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If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
5.539 km75 Km SW of Pangai, TongaUSGS
5.539 kmTonga IslandsRaspberryShake
5.426 kmTonga IslandsGFZ
5.443 kmTonga IslandsGeoAu
5.410 kmTonga: Near NouméaRENASS

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Haveluloto / Very weak shaking (MMI II) / 2-5 s (reported through our app)
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Recorded aftershocks, latest first (0 quake)

So far, no aftershocks have been registered.

Earlier earthquakes in the same area

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