# Séisme mineur mag. 1.7 - Philippine Sea, 89 km à l'est de Surigao City, Philippines, jeudi, 23 sept. 2021 23:24 (GMT +8) - writeAge(1632410640)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 23 Sep 2021 15:24:00 UTC -
Heure locale à l'épicentre: jeudi, 23 sept. 2021 23:24 (GMT +8)
Magnitude: 1.7
Profondeur: 31 km
Épicentre latitude / longitude: 9.55°N / 126.27°E (Philippine Sea, Philippines)
Antipode latitude / longitude: 9.55°S / 53.73°W (Brésil)
Source de données principale: PHIVOLCS (Philippine Institute of Volcanology and Seismology)
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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 41. This is compared to the average number of 40.77 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 18.4, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 1.7, 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 0.2 -0 (-0.2σ) 5+ 0 0.6 0.9 -0.6 (-0.7σ) 4+ 8 7.5 3.8 0.6 (0.1σ) 3+ 33 32.7 15.5 0.3 (0σ) Total 41 40.77 18.4 0.2 (0σ)
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+
Showing quakes magnitude 3.0 or higher (total: 41).
 Date et l'heure MagProfondeur Lieu Détail 23 Sep 2021 17:34:55 GMT(2 heures et 11 minutes after quake) 3.0118 km ANTOFAGASTA, CHILE [Show on map] Plus 23 Sep 2021 19:21:26 GMT(4 heures after quake) 3.195 km ANTOFAGASTA, CHILE [Show on map] Plus 23 Sep 2021 21:34:21 GMT(6 heures after quake) 3.1113 km ANTOFAGASTA, CHILE [Show on map] Plus 23 Sep 2021 22:54:26 GMT(8 heures after quake) 4.225 km NEAR COAST OF CENTRAL PERU [Show on map] Plus 23 Sep 2021 23:10:24 GMT(8 heures after quake) 3.1206 km SALTA, ARGENTINA [Show on map] Plus 24 Sep 2021 00:56:10 GMT(10 heures after quake) 3.037 km Martinique: Near Le Lamentin [Show on map] Plus 24 Sep 2021 06:50:11 GMT(15 heures after quake) 4.1236 km POTOSI, BOLIVIA [Show on map] Plus 24 Sep 2021 07:46:23 GMT(16 heures after quake) 3.2153 km SALTA (Argentina) [Show on map] Plus 24 Sep 2021 09:03:31 GMT(18 heures after quake) 3.1109 km SAN JUAN (Argentina) [Show on map] Plus 24 Sep 2021 09:05:06 GMT(18 heures after quake) 3.856 km TARAPACA, CHILE [Show on map] Plus 24 Sep 2021 09:25:01 GMT(18 heures after quake) 3.1217 km JUJUY, ARGENTINA [Show on map] Plus 24 Sep 2021 09:41:42 GMT(18 heures after quake) 3.2173 km JUJUY (Argentina) [Show on map] Plus 24 Sep 2021 09:42:24 GMT(18 heures after quake) 3.614 km CENTRAL PERU [Show on map] Plus 24 Sep 2021 09:59:17 GMT(19 heures after quake) 3.7232 km TARAPACA, CHILE [Show on map] Plus 24 Sep 2021 10:44:05 GMT(19 heures after quake) 3.629 km OFFSHORE ATACAMA, CHILE [Show on map] Plus 24 Sep 2021 11:05:31 GMT(20 heures after quake) 3.7147 km 216 Km Al Oeste De Bogota, Colombia [Show on map] Plus 24 Sep 2021 11:20:26 GMT(20 heures after quake) 3.5134 km ANTOFAGASTA, CHILE [Show on map] Plus 24 Sep 2021 11:23:19 GMT(20 heures after quake) 3.579 km TARAPACA, CHILE [Show on map] Plus 24 Sep 2021 11:45:34 GMT(20 heures after quake) 3.292 km SAN JUAN (Argentina) [Show on map] Plus 24 Sep 2021 13:27:23 GMT(22 heures after quake) 3.2118 km TARAPACA, CHILE [Show on map] Plus 24 Sep 2021 13:52:11 GMT(22 heures after quake) 3.135 km TARAPACA, CHILE [Show on map] Plus 24 Sep 2021 16:36:28 GMT(1 jour 1 heures after quake) 3.360 km COQUIMBO, CHILE [Show on map] Plus 24 Sep 2021 19:51:56 GMT(1 jour 4 heures after quake) 3.955 km ATACAMA, CHILE [Show on map] Plus 24 Sep 2021 20:42:49 GMT(1 jour 5 heures after quake) 3.7247 km Colombia: 314 Km Al Noreste De Esmeraldas, Ecuador [Show on map] Plus 24 Sep 2021 21:10:53 GMT(1 jour 6 heures after quake) 3.3115 km ANTOFAGASTA, CHILE [Show on map] Plus 25 Sep 2021 01:18:57 GMT(1 jour 10 heures after quake) 4.2146 km 12 Km W of Guaca, Colombia [Show on map] Plus 25 Sep 2021 01:42:51 GMT(1 jour 10 heures after quake) 3.822 km NORTHERN PERU [Show on map] Plus 25 Sep 2021 08:05:56 GMT(1 jour 17 heures after quake) 3.297 km ANTOFAGASTA, CHILE [Show on map] Plus 25 Sep 2021 09:10:29 GMT(1 jour 18 heures after quake) 3.5201 km SALTA (Argentina) [Show on map] Plus 25 Sep 2021 14:33:42 GMT(1 jour 23 heures after quake) 3.2204 km SALTA, ARGENTINA [Show on map] Plus 25 Sep 2021 16:39:43 GMT(2 jours after quake) 4.610 km Venezuela [Show on map] Plus 25 Sep 2021 18:09:21 GMT(2 jours after quake) 4.4124 km TARAPACA, CHILE [Show on map] Plus 25 Sep 2021 19:55:06 GMT(2 jours after quake) 4.5207 km Jujuy Province, Argentina [Show on map] Plus 26 Sep 2021 00:27:52 GMT(2 jours after quake) 3.5137 km ANTOFAGASTA, CHILE [Show on map] Plus 26 Sep 2021 00:29:35 GMT(2 jours after quake) 3.2112 km SAN JUAN (Argentina) [Show on map] Plus 26 Sep 2021 01:32:01 GMT(2 jours after quake) 3.3102 km TARAPACA, CHILE [Show on map] Plus 26 Sep 2021 03:19:48 GMT(2 jours after quake) 3.9219 km JUJUY (Argentina) [Show on map] Plus 26 Sep 2021 06:59:40 GMT(3 jours after quake) 4.4120 km 35 Km SSW of San Alejandro, Peru [Show on map] Plus 26 Sep 2021 08:29:35 GMT(3 jours after quake) 3.5204 km SALTA (Argentina) [Show on map] Plus 26 Sep 2021 09:50:13 GMT(3 jours after quake) 4.547 km COQUIMBO, CHILE [Show on map] Plus 26 Sep 2021 12:49:15 GMT(3 jours after quake) 3.610 km Ecuador - Guayas, A 33.15 Km De Naranjal [Show on map] Plus
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