Terremoto forte mag. 5.7 - South Pacific Ocean, 157 km a est da Nuku'alofa, Tongatapu, martedí, 04 maggio 2021 -

Terremoto forte mag. 5.7 - South Pacific Ocean, 157 km a est da Nuku\'alofa, Tongatapu, martedí, 04 maggio 2021

Terremoto forte magnitudine 5.7 at 10 km depth

4 May 20:03 UTC: Primo a segnalare: GFZ dopo 11 minuti.
4 May 20:05: Magnitudine ricalcolata da 5.5 a 5.6. Posizione dell'epicentro corretta di 7.4 km (4.6 mi) al O.
4 May 21:25: Magnitudine ricalcolata da 5.6 a 5.7.
Update Tue, 4 May 2021, 20:09
Significant magnitude 5.6 earthquake 117 km southeast of Pangai, Tonga
5.6 quake 5 May 8:51 am (GMT +13)
5.6 quake 5 May 8:51 am (GMT +13)
A magnitude 5.6 earthquake near Pangai, Ha'apai, Tonga, was reported only 17 minutes ago by the German Research Centre for Geosciences (GFZ), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a shallow depth of 10 km beneath the epicenter in the morning on Wednesday 5 May 2021 at 8:51 am local time. 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.
A second report was later issued by France's Réseau National de Surveillance Sismique (RéNaSS), which listed it as a magnitude 5.3 earthquake. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.2.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Pangai (pop. 1,700) located 117 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 data:

Data & ora: 4 May 2021 19:51:43 UTC -
Ora locale a epicentro: 5 May 8:51 am (GMT +13)
Magnitudine: 5.7
Profondità: 10.0 km
Epicentro latitudine / longitudine: 20.71°S / 173.76°W (South Pacific Ocean, Tonga)
Vulcano più vicino: Hunga Tonga-Hunga Ha'apai (169 km / 105 mi)
Nearby towns and cities:
117 km SSE da Pangai (pop: 1,740) --> Vedi sismi vicini
142 km ENE da ‘Ohonua (Ohonua) (pop: 1,240) --> Vedi sismi vicini
144 km ENE da Kolonga (pop: 1,100) --> Vedi sismi vicini
157 km ENE da Nuku'alofa (pop: 22,400) --> Vedi sismi vicini
157 km ENE da Nuku‘alofa (pop: 22,400) --> Vedi sismi vicini
230 km S da Neiafu (pop: 4,320) --> Vedi sismi vicini
442 km OSO da Alofi (Niue) (pop: 624) --> Vedi sismi vicini
445 km OSO da Hakupu (Niue) (pop: 221) --> Vedi sismi vicini
455 km OSO da Mutalau (Niue) (pop: 133) --> Vedi sismi vicini
155 km ENE da Amsterdam Island (pop: 75,000) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Light Rain 25.2°C (77 F), humidity: 78%, wind: 12 m/s (23 kts) from ESE
Fonte dati primaria: GFZ (German Research Centre for Geosciences)
Stima dell'energia sismica liberata: 2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 atomic bombs!) More info
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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.
5.710 kmTonga IslandsGFZ
5.310 kmNear Nouméa, TongaRENASS
5.510 km118 Km SSE of Pangai, TongaUSGS
5.610 kmTonga IslandsGeoAu

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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More info
Recorded aftershocks, latest first (2 quakes):
  • 20 May 2021 06:24 UTC
    | M 5.1 |
    10 km (6.2 mi) depth
    32 km (20 mi) distance
    | GFZ | Details
  • 05 May 2021 01:17 UTC
    | M 5.2 |
    10 km (6.2 mi) depth
    41 km (25 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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