# Séisme modéré mag. 3.9 - Océan Pacifique Nord, 19 km au sud-est de Crucecita, Mexique, mercredi, 22 sept. 2021 04:12 (GMT -5) - writeAge(1632301944)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 22 Sep 2021 09:12:24 UTC -
Heure locale à l'épicentre: mercredi, 22 sept. 2021 04:12 (GMT -5)
Magnitude: 3.9
Profondeur: 10 km
Épicentre latitude / longitude: 15.62°N / 96.04°W (Océan Pacifique Nord, Mexique)
Antipode latitude / longitude: 15.62°S / 83.96°E
Source de données principale: SSN (Servicio Sismológico Nacional)
Montrer carte interactive
[réduire] [enlarger]

## 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 12.26 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 8.9, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 3.9, 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 0.1 0.2 -0.1 (-0.2σ) 5+ 1 0.7 1 0.3 (0.3σ) 4+ 6 3.4 3 2.6 (0.9σ) 3+ 7 8.1 6.4 -1.1 (-0.2σ) Total 14 12.26 8.9 1.7 (0.2σ)
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 22 Sep 2021 17:30:10 GMT(8 heures after quake) 4.510 km Indonesia: Off West Coast of Northern Sumatra [Show on map] Plus 22 Sep 2021 23:08:07 GMT(14 heures after quake) 3.828 km Southern Sumatra, Indonesia [Show on map] Plus 23 Sep 2021 09:16:11 GMT(1 jour 0 heures after quake) 3.711 km Southwest of Sumatra, Indonesia [Show on map] Plus 23 Sep 2021 10:14:22 GMT(1 jour 1 heures after quake) 3.510 km Northern Sumatra, Indonesia [Show on map] Plus 23 Sep 2021 18:23:59 GMT(1 jour 9 heures after quake) 4.010 km South of Java, Indonesia [Show on map] Plus 23 Sep 2021 19:48:48 GMT(1 jour 11 heures after quake) 4.110 km Sri Lanka: Indian Ocean [Show on map] Plus 23 Sep 2021 19:48:56 GMT(1 jour 11 heures after quake) 4.25 km 135km SW of Kollam, Kerala, India [Show on map] Plus 24 Sep 2021 01:18:13 GMT(1 jour 16 heures after quake) 3.710 km Java, Indonesia [Show on map] Plus 24 Sep 2021 05:49:51 GMT(1 jour 21 heures after quake) 4.182 km Southwest of Sumatra, Indonesia [Show on map] Plus 24 Sep 2021 10:49:58 GMT(2 jours after quake) 3.615 km Java, Indonesia [Show on map] Plus 24 Sep 2021 15:04:27 GMT(2 jours after quake) 5.263 km India: Nicobar Islands [Show on map] Plus 24 Sep 2021 19:50:48 GMT(2 jours after quake) 4.210 km South of Java, Indonesia [Show on map] Plus 24 Sep 2021 22:04:30 GMT(3 jours after quake) 3.3171 km Sunda Strait, Indonesia [Show on map] Plus 24 Sep 2021 23:39:38 GMT(3 jours after quake) 3.410 km Southern Sumatra, Indonesia [Show on map] Plus
Découvrez notre app gratuite !
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
• Improved multilanguage support
• Tsunami alerts
• Faster responsiveness
Thanks to your past donations, these features have been added recently:
• Earthquake archive from 1900 onwards
• Detailed quake stats
• Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyright: VolcanoDiscovery ou autres sources indiquées.
Utilisation des documents: Les textes, les images et les vidéos de ce site internet sont protégées par copyright. Toute reproduction et tout usage sans accord préalable ne sont pas autorisés. Si vous désirez acquérir pour certains documents (photos, vidéos, textes ou autres) le droit de reproduction, d'édition et, plus généralement, de toute utilisation destinée à un usage public, qu'elle soit commerciale ou pas, vous êtes priés de nous contacter.