# Séisme mineur mag. 1.4 - Greece: 24 Km WSW From Volos, samedi, 25 sept. 2021 15:15 (GMT +3) - writeAge(1632572124)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 25 Sep 2021 12:15:24 UTC -
Heure locale à l'épicentre: samedi, 25 sept. 2021 15:15 (GMT +3)
Magnitude: 1.4
Profondeur: 20 km
Épicentre latitude / longitude: 39.2734°N / 22.6895°E (Grèce)
Antipode sismique latitude / longitude: 39.273°S / 157.311°W
Source de données principale: NOA (National Observatory of Athens)
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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 14. This is compared to the average number of 17.25 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 33.5, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 1.4, 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 no significant variation in the number of quakes that occurred around the antipode within 3 jours.
 Mag class Total # Average σ Observed deviation 6+ 0 0.3 1 -0.3 (-0.3σ) 5+ 2 3.5 8 -1.5 (-0.2σ) 4+ 10 7.6 8.7 2.4 (0.3σ) 3+ 2 5.9 17.9 -3.9 (-0.2σ) Total 14 17.25 33.5 -3.3 (-0.1σ)
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

Filtrer par magnitude:
Tous
3.0+
4.0+
5.0+
Showing quakes magnitude 3.0 or higher (total: 14).
 Date et l'heure MagProfondeur Lieu Détail 25 Sep 2021 13:42:44 GMT(1 heure et 27 minutes after quake) 4.912 km New Zealand [Show on map] Plus 25 Sep 2021 14:30:59 GMT(2 heures et 16 minutes after quake) 4.810 km 37 Km SSE of Pangai, Tonga [Show on map] Plus 25 Sep 2021 15:45:08 GMT(3 heures after quake) 4.710 km 59 Km S of Pangai, Tonga [Show on map] Plus 25 Sep 2021 15:48:09 GMT(4 heures after quake) 4.2415 km New Zealand [Show on map] Plus 26 Sep 2021 02:43:45 GMT(14 heures after quake) 5.0387 km New Zealand [Show on map] Plus 26 Sep 2021 11:04:33 GMT(23 heures after quake) 3.7328 km New Zealand [Show on map] Plus 26 Sep 2021 17:03:58 GMT(1 jour 5 heures after quake) 4.833 km New Zealand [Show on map] Plus 26 Sep 2021 23:06:04 GMT(1 jour 11 heures after quake) 5.112 km New Zealand [Show on map] Plus 27 Sep 2021 04:54:36 GMT(1 jour 17 heures after quake) 4.533 km New Zealand [Show on map] Plus 27 Sep 2021 11:15:42 GMT(1 jour 23 heures after quake) 3.812 km New Zealand [Show on map] Plus 27 Sep 2021 14:06:54 GMT(2 jours after quake) 4.610 km 156 Km NW of Nuku‘alofa, Tonga [Show on map] Plus 28 Sep 2021 00:41:54 GMT(3 jours after quake) 4.933 km New Zealand [Show on map] Plus 28 Sep 2021 08:11:48 GMT(3 jours after quake) 4.5242 km New Zealand [Show on map] Plus 28 Sep 2021 10:15:36 GMT(3 jours after quake) 4.933 km New Zealand [Show on map] Plus
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