# Weak mag. 2.5 earthquake - Province of Guimaras, 26 km south of Iloilo City, Western Visayas, Philippines, on Saturday, Oct 23, 2021 12:09 am (GMT +8) - writeAge(1634918940)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 22 Oct 2021 16:09:00 UTC -
Local time at epicenter: Saturday, Oct 23, 2021 12:09 am (GMT +8)
Magnitude: 2.5
Depth: 2 km
Epicenter latitude / longitude: 10.47°N / 122.5°E (Province of Guimaras, Western Visayas, Philippines)
Antipode latitude / longitude: 10.47°S / 57.5°W (Brazil)
Primary data source: PHIVOLCS (Philippine Institute of Volcanology and Seismology)
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## Quakes within 30 degrees from seismic antipode up to 3 days 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 days around the antipode of the quake was 34. This is compared to the average number of 0 quakes during preceding intervals of 3 days with a standard deviation (σ) of 3.4, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 2.5, 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 days.
 Mag class Total # Average σ Observed deviation 6+ 0 0 0 n/a 5+ 0 0 0 n/a 4+ 9 0 0.9 9 (9.9σ) 3+ 25 0 2.5 25 (9.9σ) Total 34 0 3.4 34 (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

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4.0+
Showing quakes magnitude 3.0 or higher (total: 34).
 Date and time MagDepth Location Details 23 Oct 2021 16:34:53 GMT(1 day 0 hours after quake) 4.027 km NEAR COAST OF SOUTHERN PERU [Show on map] More 23 Oct 2021 18:59:22 GMT(1 day 3 hours after quake) 3.010 km SAN JUAN (Argentina) [Show on map] More 23 Oct 2021 19:43:39 GMT(1 day 4 hours after quake) 4.1123 km ANTOFAGASTA, CHILE [Show on map] More 23 Oct 2021 20:05:00 GMT(1 day 4 hours after quake) 3.15 km Venezuela: 5 Km Al Suroeste De Barinitas [Show on map] More 24 Oct 2021 00:04:15 GMT(1 day 8 hours after quake) 3.1192 km SALTA (Argentina) [Show on map] More 24 Oct 2021 02:05:18 GMT(1 day 10 hours after quake) 3.4138 km ANTOFAGASTA, CHILE [Show on map] More 24 Oct 2021 02:55:48 GMT(1 day 11 hours after quake) 3.153 km ANTOFAGASTA, CHILE [Show on map] More 24 Oct 2021 05:09:07 GMT(1 day 13 hours after quake) 3.4176 km SALTA (Argentina) [Show on map] More 24 Oct 2021 05:10:06 GMT(1 day 13 hours after quake) 4.0109 km SAN JUAN (Argentina) [Show on map] More 24 Oct 2021 05:48:05 GMT(1 day 14 hours after quake) 3.114 km JUJUY (Argentina) [Show on map] More 24 Oct 2021 06:21:36 GMT(1 day 14 hours after quake) 3.230 km OFFSHORE ATACAMA, CHILE [Show on map] More 24 Oct 2021 06:43:59 GMT(1 day 15 hours after quake) 3.4111 km TARAPACA, CHILE [Show on map] More 24 Oct 2021 07:57:43 GMT(1 day 16 hours after quake) 3.241 km OFFSHORE ATACAMA, CHILE [Show on map] More 24 Oct 2021 08:20:21 GMT(1 day 16 hours after quake) 4.438 km GUADELOUPE REGION, LEEWARD ISL. [Show on map] More 24 Oct 2021 08:55:19 GMT(1 day 17 hours after quake) 3.091 km SAN JUAN (Argentina) [Show on map] More 24 Oct 2021 09:09:13 GMT(1 day 17 hours after quake) 3.118 km CATAMARCA (Argentina) [Show on map] More 24 Oct 2021 10:28:36 GMT(1 day 18 hours after quake) 4.515 km CENTRAL PERU [Show on map] More 24 Oct 2021 10:28:45 GMT(1 day 18 hours after quake) 4.110 km Central Peru [Show on map] More 24 Oct 2021 11:08:31 GMT(1 day 19 hours after quake) 3.1236 km JUJUY, ARGENTINA [Show on map] More 24 Oct 2021 11:56:37 GMT(1 day 20 hours after quake) 3.0123 km TARAPACA, CHILE [Show on map] More 24 Oct 2021 13:45:00 GMT(1 day 22 hours after quake) 3.05 km Venezuela: 26 Km Al Oeste De Calabozo [Show on map] More 24 Oct 2021 15:52:57 GMT(1 day 24 hours after quake) 3.1103 km SAN JUAN (Argentina) [Show on map] More 24 Oct 2021 16:45:38 GMT(2 days after quake) 3.1127 km LA RIOJA (Argentina) [Show on map] More 24 Oct 2021 16:52:35 GMT(2 days after quake) 4.2191 km SALTA, ARGENTINA [Show on map] More 24 Oct 2021 17:40:16 GMT(2 days after quake) 3.64 km Ecuador - Santa Elena, A 40.6 Km De Pedro Carbo [Show on map] More 24 Oct 2021 18:09:11 GMT(2 days after quake) 4.3251 km SALTA, ARGENTINA [Show on map] More 24 Oct 2021 18:26:23 GMT(2 days after quake) 3.010 km SAN JUAN (Argentina) [Show on map] More 24 Oct 2021 22:39:38 GMT(2 days after quake) 3.3130 km ANTOFAGASTA, CHILE [Show on map] More 25 Oct 2021 00:07:04 GMT(2 days after quake) 3.1106 km SAN JUAN (Argentina) [Show on map] More 25 Oct 2021 01:55:08 GMT(2 days after quake) 3.0129 km ANTOFAGASTA, CHILE [Show on map] More 25 Oct 2021 05:07:48 GMT(3 days after quake) 3.0114 km SAN JUAN (Argentina) [Show on map] More 25 Oct 2021 07:56:15 GMT(3 days after quake) 3.088 km SAN JUAN (Argentina) [Show on map] More 25 Oct 2021 11:05:50 GMT(3 days after quake) 3.518 km OFFSHORE VALPARAISO, CHILE [Show on map] More 25 Oct 2021 14:39:36 GMT(3 days after quake) 4.32 km OFFSHORE VALPARAISO, CHILE [Show on map] More
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