# Événement inconnu (à l'origine signalé comme tremblement de terre): 2.9 km au sud-est de Athènes, Nomarchia Athinas, Attica, Grèce, dimanche, 24 oct. 2021 22:40 (GMT +3) - writeAge(1635104455)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 24 Oct 2021 19:40:55 UTC -
Heure locale à l'épicentre: dimanche, 24 oct. 2021 22:40 (GMT +3)
Magnitude: 3?
Profondeur: ? km
Épicentre latitude / longitude: 37.9643°N / 23.7491°E (Nomarchia Athinas, Attica, Grèce)
Antipode latitude / longitude: 37.964°S / 156.251°W
Source de données principale: VolcanoDiscovery
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## Quakes within 30 degrees from seismic antipode up to 3 jours after the quake

The area around the antipode is marked with the big circle on the map.
The total number of quakes that occurred within 3 jours around the antipode of the quake was 8. This is compared to the average number of 0 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 0.8, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 3.0, it is unlikely that this quake could affect areas around its antipode. If an increase or decrease of quake is detected, it is likely caused by other factors.
There is a weak increase in detected quakes around the antipode during the following 3 jours.
 Mag class Total # Average σ Observed deviation 6+ 0 0 0 n/a 5+ 1 0 0.1 1 (9.9σ) 4+ 6 0 0.6 6 (9.9σ) 3+ 1 0 0.1 1 (9.9σ) Total 8 0 0.8 8 (9.9σ)
Explanation:
BLACK = Number of quakes within normal statistical range
RED = Significantly lower than normal number of quakes
GREEN = Significantly higher than normal number of quakes

## List of quakes

Showing quakes magnitude 3.0 or higher (total: 8).
 Date et l'heure MagProfondeur Lieu Détail 26 Oct 2021 05:24:42 GMT(1 jour 10 heures after quake) 4.733 km New Zealand [Show on map] Plus 26 Oct 2021 14:59:03 GMT(1 jour 19 heures after quake) 4.4425 km New Zealand [Show on map] Plus 26 Oct 2021 18:01:51 GMT(1 jour 22 heures after quake) 4.533 km New Zealand [Show on map] Plus 26 Oct 2021 18:46:14 GMT(1 jour 23 heures after quake) 4.957 km New Zealand: Kermadec Islands Region [Show on map] Plus 27 Oct 2021 06:10:44 GMT(2 jours after quake) 5.633 km New Zealand [Show on map] Plus 27 Oct 2021 07:32:07 GMT(2 jours after quake) 4.5506 km South of the Fiji Islands [Show on map] Plus 27 Oct 2021 13:51:56 GMT(3 jours after quake) 4.4362 km New Zealand [Show on map] Plus 27 Oct 2021 17:21:28 GMT(3 jours after quake) 3.6540 km New Zealand [Show on map] Plus
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