# Moderate mag. 4.4 earthquake - 79 km northeast of Sofifi, Kota Tidore Kepulauan, North Maluku, Indonesia, on Tuesday, Oct 19, 2021 1:29 am (GMT +9) - writeAge(1634574561)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 18 Oct 2021 16:29:21 UTC -
Local time at epicenter: Tuesday, Oct 19, 2021 1:29 am (GMT +9)
Magnitude: 4.4
Depth: 10 km
Epicenter latitude / longitude: 1.14°N / 128.14°E (Indonesia)
Antipode latitude / longitude: 1.14°S / 51.86°W (Brazil)
Primary data source: BMKG (Meteorological, Climatological, and Geophysical Agency of Indonesia)
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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 19. This is compared to the average number of 0 quakes during preceding intervals of 3 days with a standard deviation (σ) of 1.9, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 4.4, 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 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+ 0 0 0 n/a 3+ 19 0 1.9 19 (9.9σ) Total 19 0 1.9 19 (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

Filter by magnitude:
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3.0+
Showing quakes magnitude 3.0 or higher (total: 19).
 Date and time MagDepth Location Details 19 Oct 2021 15:43:41 GMT(23 hours after quake) 3.119 km Peru: OFF COAST OF TARAPACA, CHILE [Show on map] More 19 Oct 2021 21:01:05 GMT(1 day 5 hours after quake) 3.6112 km TARAPACA, CHILE [Show on map] More 19 Oct 2021 22:28:42 GMT(1 day 6 hours after quake) 3.011 km 103 Km N of Isabela, Puerto Rico [Show on map] More 20 Oct 2021 00:22:31 GMT(1 day 8 hours after quake) 3.5125 km ANTOFAGASTA, CHILE [Show on map] More 20 Oct 2021 02:41:14 GMT(1 day 10 hours after quake) 3.1211 km JUJUY (Argentina) [Show on map] More 20 Oct 2021 02:47:57 GMT(1 day 10 hours after quake) 3.292 km Ecuador - Chimborazo, A 26.3 Km De Alausi [Show on map] More 20 Oct 2021 09:20:40 GMT(1 day 17 hours after quake) 3.1102 km TARAPACA, CHILE [Show on map] More 20 Oct 2021 17:59:50 GMT(2 days after quake) 3.1116 km ANTOFAGASTA, CHILE [Show on map] More 20 Oct 2021 19:37:45 GMT(2 days after quake) 3.666 km MONA PASSAGE, DOMINICAN REPUBLIC [Show on map] More 20 Oct 2021 22:21:00 GMT(2 days after quake) 3.335 km Venezuela: 4 Km Al Suroeste De Guiria [Show on map] More 20 Oct 2021 22:21:05 GMT(2 days after quake) 3.60 km French Guiana: Oiapoque/AP [Show on map] More 21 Oct 2021 02:42:47 GMT(2 days after quake) 3.1108 km TARAPACA, CHILE [Show on map] More 21 Oct 2021 03:29:00 GMT(2 days after quake) 3.123 km Venezuela: 30 Km Al Norte De Barquisimeto [Show on map] More 21 Oct 2021 07:31:17 GMT(3 days after quake) 3.1122 km ANTOFAGASTA, CHILE [Show on map] More 21 Oct 2021 10:51:19 GMT(3 days after quake) 3.333 km SALTA (Argentina) [Show on map] More 21 Oct 2021 11:43:10 GMT(3 days after quake) 3.210 km 48 Km NW of San Antonio, Puerto Rico [Show on map] More 21 Oct 2021 14:17:55 GMT(3 days after quake) 3.4120 km ANTOFAGASTA, CHILE [Show on map] More 21 Oct 2021 14:23:00 GMT(3 days after quake) 3.01.3 km Venezuela: 31 Km Al Sureste De El Vigia [Show on map] More 21 Oct 2021 15:03:11 GMT(3 days after quake) 3.10 km Brazil: Rifaina/SP [Show on map] More
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