# Séisme très faible mag. 2.0 - Province of Surigao del Norte, 5.6 km au nord-ouest de Kitcharao, Philippines, mardi, 21 sept. 2021 02:50 (GMT +8) - writeAge(1632163800)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 20 Sep 2021 18:50:00 UTC -
Heure locale à l'épicentre: mardi, 21 sept. 2021 02:50 (GMT +8)
Magnitude: 2
Profondeur: 1 km
Épicentre latitude / longitude: 9.5°N / 125.55°E (Province of Surigao del Norte, Caraga, Philippines)
Antipode sismique latitude / longitude: 9.5°S / 54.45°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 40. This is compared to the average number of 42.21 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 19.4, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 2.0, 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 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+ 6 7.8 4.2 -1.8 (-0.4σ) 3+ 34 33.7 16.1 0.3 (0σ) Total 40 42.21 19.4 -2.2 (-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+
Showing quakes magnitude 3.0 or higher (total: 40).
 Date et l'heure MagProfondeur Lieu Détail 20 Sep 2021 20:49:18 GMT(1 heure et 59 minutes after quake) 3.9217 km JUJUY (Argentina) [Show on map] Plus 20 Sep 2021 21:23:01 GMT(2 heures et 33 minutes after quake) 3.928 km Martinique: Near Le Lamentin [Show on map] Plus 20 Sep 2021 22:05:19 GMT(3 heures after quake) 3.1206 km SALTA (Argentina) [Show on map] Plus 21 Sep 2021 03:44:28 GMT(9 heures after quake) 3.4209 km SALTA (Argentina) [Show on map] Plus 21 Sep 2021 06:14:00 GMT(11 heures after quake) 3.05 km Venezuela: 16 Km Al Oeste De Guanare [Show on map] Plus 21 Sep 2021 06:54:27 GMT(12 heures after quake) 3.368 km COQUIMBO, CHILE [Show on map] Plus 21 Sep 2021 08:18:40 GMT(13 heures after quake) 4.030 km NEAR COAST OF SOUTHERN PERU [Show on map] Plus 21 Sep 2021 12:40:05 GMT(18 heures after quake) 3.0170 km JUJUY, ARGENTINA [Show on map] Plus 21 Sep 2021 13:39:27 GMT(19 heures after quake) 3.2227 km ANTOFAGASTA, CHILE [Show on map] Plus 21 Sep 2021 16:15:23 GMT(21 heures after quake) 3.393 km SAN JUAN, ARGENTINA [Show on map] Plus 21 Sep 2021 19:37:06 GMT(1 jour 1 heures after quake) 3.245 km OFFSHORE ANTOFAGASTA, CHILE [Show on map] Plus 21 Sep 2021 21:57:31 GMT(1 jour 3 heures after quake) 3.0250 km SALTA, ARGENTINA [Show on map] Plus 21 Sep 2021 22:04:26 GMT(1 jour 3 heures after quake) 3.4107 km SAN JUAN (Argentina) [Show on map] Plus 22 Sep 2021 00:09:58 GMT(1 jour 5 heures after quake) 3.1209 km SALTA (Argentina) [Show on map] Plus 22 Sep 2021 00:24:00 GMT(1 jour 6 heures after quake) 3.036 km Venezuela: Punta Arenas [Show on map] Plus 22 Sep 2021 01:08:57 GMT(1 jour 6 heures after quake) 4.1147 km TARAPACA, CHILE [Show on map] Plus 22 Sep 2021 03:30:36 GMT(1 jour 9 heures after quake) 3.1116 km TARAPACA, CHILE [Show on map] Plus 22 Sep 2021 03:55:33 GMT(1 jour 9 heures after quake) 3.1209 km SALTA (Argentina) [Show on map] Plus 22 Sep 2021 05:07:38 GMT(1 jour 10 heures after quake) 3.0110 km ANTOFAGASTA, CHILE [Show on map] Plus 22 Sep 2021 06:48:58 GMT(1 jour 12 heures after quake) 3.4121 km SAN JUAN (Argentina) [Show on map] Plus 22 Sep 2021 10:34:11 GMT(1 jour 16 heures after quake) 3.3202 km SALTA (Argentina) [Show on map] Plus 22 Sep 2021 11:49:46 GMT(1 jour 17 heures after quake) 3.0178 km POTOSI, BOLIVIA [Show on map] Plus 22 Sep 2021 12:06:38 GMT(1 jour 17 heures after quake) 3.2150 km JUJUY (Argentina) [Show on map] Plus 22 Sep 2021 17:01:36 GMT(1 jour 22 heures after quake) 3.0121 km SAN JUAN (Argentina) [Show on map] Plus 22 Sep 2021 17:37:48 GMT(1 jour 23 heures after quake) 3.2180 km JUJUY (Argentina) [Show on map] Plus 22 Sep 2021 21:06:19 GMT(2 jours after quake) 3.2233 km SAN JUAN (Argentina) [Show on map] Plus 22 Sep 2021 21:58:04 GMT(2 jours after quake) 4.4190 km ANTOFAGASTA, CHILE [Show on map] Plus 23 Sep 2021 01:56:54 GMT(2 jours after quake) 3.34 km Ecuador - Pichincha, A 26.5 Km De Sangolqui [Show on map] Plus 23 Sep 2021 02:47:14 GMT(2 jours after quake) 3.0138 km ANTOFAGASTA, CHILE [Show on map] Plus 23 Sep 2021 03:08:07 GMT(2 jours after quake) 3.1197 km SALTA (Argentina) [Show on map] Plus 23 Sep 2021 04:06:03 GMT(2 jours after quake) 4.430 km OFF COAST OF NORTHERN PERU [Show on map] Plus 23 Sep 2021 05:09:30 GMT(2 jours after quake) 3.681 km Ecuador - Guayas, A 50.95 Km De Guayaquil [Show on map] Plus 23 Sep 2021 07:30:00 GMT(3 jours after quake) 3.624 km Venezuela: 10 Km Al Suroeste De Yaguaraparo [Show on map] Plus 23 Sep 2021 07:56:36 GMT(3 jours after quake) 4.043 km OFF COAST OF NORTHERN PERU [Show on map] Plus 23 Sep 2021 09:01:06 GMT(3 jours after quake) 3.10 km Brazil: Cajapio/MA [Show on map] Plus 23 Sep 2021 11:01:54 GMT(3 jours after quake) 4.5104 km ANTOFAGASTA, CHILE [Show on map] Plus 23 Sep 2021 13:03:31 GMT(3 jours after quake) 3.2133 km CATAMARCA (Argentina) [Show on map] Plus 23 Sep 2021 14:11:37 GMT(3 jours after quake) 3.0230 km POTOSI, BOLIVIA [Show on map] Plus 23 Sep 2021 14:53:44 GMT(3 jours after quake) 3.2200 km JUJUY (Argentina) [Show on map] Plus 23 Sep 2021 17:34:55 GMT(3 jours after quake) 3.0118 km ANTOFAGASTA, CHILE [Show on map] Plus
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