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Tremblement de terre fort magnitude 5.7 - South Pacific Ocean, 157 km à l'est de Nukalofa, Nuku'alofa, Tongatapu, 5 May 8:51 am (GMT +13)

Tremblement de terre fort magnitude 5.7 - South Pacific Ocean, 157 km à l\'est de Nukalofa, Nuku\'alofa, Tongatapu, 5 May 8:51 am (GMT +13) Tremblement de terre fort magnitude 5.7 - South Pacific Ocean, 157 km à l\'est de Nukalofa, Nuku\'alofa, Tongatapu, 5 May 8:51 am (GMT +13)

Tremblement de terre fort magnitude 5.7 à 10 km de profondeur

4 May 20:03 UTC: Premier à signaler: GFZ après 11 minutes.
4 May 20:05: Magnitude recalculée de 5.5 à 5.6. Emplacement de l'épicentre corrigé de 7.4 km (4.6 mi) au O.
4 May 21:25: Magnitude recalculée de 5.6 à 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.

Téléchargez l'application Volcans et Séismes et recevez l'une des alertes sismiques les plus rapides en ligne : Android | iOS

Détails du séisme

Date et l'heure4 May 2021 19:51:43 UTC
Heure locale à l'épicentre5 May 8:51 am (GMT +13)
Profondeur10.0 km
Épicentre latitude / longitude20.71°S / 173.76°W (South Pacific Ocean, Tonga)
Antipode20.71°N / 6.24°E
Intensité d'agitationSecousses fortes près de l'épicentre
Senti0 rapports
Source de données principaleGFZ (German Research Centre for Geosciences)
Volcan le plus prèsHunga Tonga-Hunga Ha'apai (169 km / 105 mi)
Lieux à proximité117 km SSE de Bangai (Pangai) (pop: 1,740) | Carte | Séismes à proximité
142 km ENE de ‘Ohonua (Ohonua) (pop: 1,240) | Carte | Séismes à proximité
144 km ENE de Kolonga (pop: 1,100) | Carte | Séismes à proximité
157 km ENE de Nukalofa (Nuku'alofa) (pop: 22,400) | Carte | Séismes à proximité
157 km ENE de Nuku‘alofa (pop: 22,400) | Carte | Séismes à proximité
230 km S de Neiafu (pop: 4,320) | Carte | Séismes à proximité
442 km OSO de Alofi (Niue) (pop: 624) | Carte | Séismes à proximité
157 km ENE de Amsterdam Island (pop: 75,000) | Carte | Séismes à proximité
Météo à l'épicentre au moment du séismeLight Rain 25.2°C (77 F), humidity: 78%, wind: 12 m/s (23 kts) from ESE
Énergie sismique estimée libérée2.2 x 1013 joules (6.22 GWh, équivalent à 5351 tonnes de TNT ou 0.3 bombes atomiques!) | about seismic energy
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Données pour le même séisme indiquées par différentes agences

Info : Plus les agences signalent le même séisme et publient des données similaires, plus vous pouvez avoir confiance dans les données. Il faut normalement jusqu'à quelques heures pour que les paramètres sismiques soient calculés avec une précision quasi optimale.
5.710 kmTonga IslandsGFZ
5.310 kmNear Nouméa, TongaRENASS
5.510 km118 Km SSE of Pangai, TongaUSGS
5.610 kmTonga IslandsGeoAu


Seismic station: Rarotonga, Cook Islands (RAR/IU network) | Distance from quake: 1453 km / 903 mi | Show on map | Station Info
Seismic station Rarotonga, Cook Islands: 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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Témoignages pour ce séisme

Les rapports des utilisateurs estiment l'intensité perçue des secousses du sol en fonction de l' Échelle MMI (Modified Mercalli Intensity Scale).
There are no user reports for this quake.


[Plus d'infos]

Répliques enregistrées, les plus récentes en premier (2 séismes)

Date et l'heureMag
20 mai. 2021 06:24
il y a 1 an 28 semaines

10 km
South Pacific Ocean, 126 km E de Nukalofa, Nuku'alofa, TongatapuPlus
5 mai. 2021 01:17
il y a 1 an 31 semaines

10 km
South Pacific Ocean, 197 km E de Nukalofa, Nuku'alofa, TongatapuPlus

Earlier earthquakes in the same area

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