Moderate mag. 4.4 earthquake - South Pacific Ocean, 90 km west of Concepcion, Region del Biobio, Chile, on Monday, Sep 20, 2021 8:58 am (GMT -5) - writeAge(1632146310)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 20 Sep 2021 13:58:30 UTC -
Local time at epicenter: Monday, Sep 20, 2021 8:58 am (GMT -5)
Magnitude: 4.4
Depth: 11 km
Epicenter latitude / longitude: 36.77°S / 74.06°W (South Pacific Ocean, Chile)
Antipode latitude / longitude: 36.77°N / 105.94°E (China)
Primary data source: EMSC (European-Mediterranean Seismological Centre)
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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 70. This is compared to the average number of 59.19 quakes during preceding intervals of 3 days with a standard deviation (σ) of 32.3, 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 no significant variation in the number of quakes that occurred around the antipode within 3 days.
 Mag class Total # Average σ Observed deviation 6+ 0 0.1 0.3 -0.1 (-0.2σ) 5+ 1 1.8 2.6 -0.8 (-0.3σ) 4+ 26 20.4 12 5.6 (0.5σ) 3+ 43 36.9 21.4 6.1 (0.3σ) Total 70 59.19 32.3 10.8 (0.3σ)
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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Showing quakes magnitude 3.0 or higher (total: 70).
 Date and time MagDepth Location Details 20 Sep 2021 14:10:47 GMT(12 minutes after quake) 4.710 km KYRGYZSTAN-XINJIANG BORDER REGION [Show on map] More 20 Sep 2021 15:50:28 GMT(1 hour and 52 minutes after quake) 3.610 km NORTHERN XINJIANG, CHINA [Show on map] More 20 Sep 2021 18:42:38 GMT(5 hours after quake) 3.951 km LUZON, PHILIPPINES [Show on map] More 20 Sep 2021 19:00:11 GMT(5 hours after quake) 4.510 km SOUTHWESTERN SIBERIA, RUSSIA [Show on map] More 20 Sep 2021 20:30:16 GMT(7 hours after quake) 4.2211 km 211km SE of Haldia, West Bengal, India [Show on map] More 20 Sep 2021 20:30:16 GMT(7 hours after quake) 3.536 km Bangladesh: Bay of Bengal [Show on map] More 20 Sep 2021 20:31:30 GMT(7 hours after quake) 3.233 km 93km ENE of Jagdalpur, Chhattisgarh, India [Show on map] More 20 Sep 2021 22:06:57 GMT(8 hours after quake) 3.710 km Yunnan, China [Show on map] More 20 Sep 2021 22:50:53 GMT(9 hours after quake) 3.010 km India: Sirmaur, Himachal Pradesh [Show on map] More 21 Sep 2021 00:44:24 GMT(11 hours after quake) 3.610 km EASTERN KAZAKHSTAN [Show on map] More 21 Sep 2021 01:10:49 GMT(11 hours after quake) 4.510 km SOUTHERN XINJIANG, CHINA [Show on map] More 21 Sep 2021 04:38:30 GMT(15 hours after quake) 3.870 km Japan: NORTHEAST OF TAIWAN [Show on map] More 21 Sep 2021 05:50:20 GMT(16 hours after quake) 4.710 km China: XIZANG [Show on map] More 21 Sep 2021 07:40:09 GMT(18 hours after quake) 4.610 km SOUTHWESTERN SIBERIA, RUSSIA [Show on map] More 21 Sep 2021 07:50:15 GMT(18 hours after quake) 4.810 km 64km ENE of Katra, Jammu And Kashmir, India [Show on map] More 21 Sep 2021 07:56:40 GMT(18 hours after quake) 4.610 km EASTERN KAZAKHSTAN [Show on map] More 21 Sep 2021 08:36:42 GMT(19 hours after quake) 3.910 km EASTERN KAZAKHSTAN [Show on map] More 21 Sep 2021 09:54:00 GMT(20 hours after quake) 3.016 km Philippines: 032 Km N 02° E of Dalupiri Island (Calayan) (Cagayan) [Show on map] More 21 Sep 2021 14:31:20 GMT(1 day 1 hours after quake) 4.910 km India: EASTERN KASHMIR [Show on map] More 21 Sep 2021 15:56:36 GMT(1 day 2 hours after quake) 3.410 km EASTERN KAZAKHSTAN [Show on map] More 21 Sep 2021 16:06:53 GMT(1 day 2 hours after quake) 4.210 km NORTHERN XINJIANG, CHINA [Show on map] More 21 Sep 2021 16:43:02 GMT(1 day 3 hours after quake) 4.610 km Near Quezon City, National Capital Region, Philippines [Show on map] More 21 Sep 2021 16:54:20 GMT(1 day 3 hours after quake) 3.510 km KYRGYZSTAN-XINJIANG BORDER REGION [Show on map] More 21 Sep 2021 16:59:00 GMT(1 day 3 hours after quake) 3.728 km Philippines: 015 Km S 89° W of Mamburao (Occidental Mindoro) [Show on map] More 21 Sep 2021 17:45:04 GMT(1 day 4 hours after quake) 4.010 km Kazakhstan: SOUTHWESTERN SIBERIA, RUSSIA [Show on map] More 21 Sep 2021 18:05:39 GMT(1 day 4 hours after quake) 3.610 km Kazakhstan: LAKE ISSYK-KUL, KYRGYZSTAN, REGION [Show on map] More 21 Sep 2021 18:30:54 GMT(1 day 5 hours after quake) 3.410 km NORTHERN XINJIANG, CHINA [Show on map] More 21 Sep 2021 21:23:46 GMT(1 day 7 hours after quake) 3.024 km Japan: SW OFF HOKKAIDO [Show on map] More 21 Sep 2021 23:01:00 GMT(1 day 9 hours after quake) 3.13 km Philippines: 047 Km S 75° W of Paluan (Occidental Mindoro) [Show on map] More 22 Sep 2021 01:22:10 GMT(1 day 11 hours after quake) 4.610 km NORTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 06:07:33 GMT(1 day 16 hours after quake) 3.310 km SOUTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 07:11:14 GMT(1 day 17 hours after quake) 3.710 km SOUTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 07:45:33 GMT(1 day 18 hours after quake) 3.810 km China: KYRGYZSTAN-XINJIANG BORDER REGION [Show on map] More 22 Sep 2021 09:49:21 GMT(1 day 20 hours after quake) 3.210 km SOUTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 10:15:15 GMT(1 day 20 hours after quake) 4.65 km 143km WSW of Prayagraj, Uttar Pradesh, India [Show on map] More 22 Sep 2021 11:44:17 GMT(1 day 22 hours after quake) 3.410 km NORTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 12:03:02 GMT(1 day 22 hours after quake) 3.710 km SOUTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 13:24:46 GMT(1 day 23 hours after quake) 3.010 km Myanmar (Burma): Myanmar [Show on map] More 22 Sep 2021 15:00:19 GMT(2 days after quake) 4.110 km NORTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 15:02:40 GMT(2 days after quake) 3.763 km Myanmar (Burma): Myanmar [Show on map] More 22 Sep 2021 15:49:34 GMT(2 days after quake) 3.910 km SOUTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 15:57:34 GMT(2 days after quake) 4.0401 km Japan: SOUTHERN NARA PREF [Show on map] More 22 Sep 2021 16:07:48 GMT(2 days after quake) 3.816 km Kyrgyzstan: Kyrgizstan Region [Show on map] More 22 Sep 2021 16:07:53 GMT(2 days after quake) 4.810 km KYRGYZSTAN [Show on map] More 22 Sep 2021 16:36:00 GMT(2 days after quake) 3.432 km Philippines: 011 Km S 74° W of Mamburao (Occidental Mindoro) [Show on map] More 22 Sep 2021 17:01:29 GMT(2 days after quake) 5.210 km East of Lake Baykal, Russia [Show on map] More 22 Sep 2021 17:20:46 GMT(2 days after quake) 3.710 km SOUTHERN XINJIANG, CHINA [Show on map] More 22 Sep 2021 17:40:47 GMT(2 days after quake) 3.710 km KAZAKHSTAN-XINJIANG BORDER REGION [Show on map] More 22 Sep 2021 19:47:00 GMT(2 days after quake) 4.731 km Philippines: 015 Km N 85° W of Mamburao (Occidental Mindoro) [Show on map] More 22 Sep 2021 20:56:56 GMT(2 days after quake) 4.08 km Myanmar (Burma): Myanmar [Show on map] More 22 Sep 2021 22:39:07 GMT(2 days after quake) 3.0132 km MINDORO, PHILIPPINES [Show on map] More 23 Sep 2021 00:03:44 GMT(2 days after quake) 4.810 km Mongolia [Show on map] More 23 Sep 2021 00:28:03 GMT(2 days after quake) 3.710 km EASTERN KAZAKHSTAN [Show on map] More 23 Sep 2021 02:10:33 GMT(3 days after quake) 4.410 km SOUTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 04:24:12 GMT(3 days after quake) 4.710 km SOUTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 05:29:41 GMT(3 days after quake) 3.710 km NORTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 05:34:36 GMT(3 days after quake) 3.01 km Myanmar (Burma): Myanmar [Show on map] More 23 Sep 2021 05:34:40 GMT(3 days after quake) 3.010 km Myanmar (Burma): Myanmar [Show on map] More 23 Sep 2021 05:52:27 GMT(3 days after quake) 4.310 km NORTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 07:33:26 GMT(3 days after quake) 3.510 km KAZAKHSTAN-XINJIANG BORDER REGION [Show on map] More 23 Sep 2021 07:46:21 GMT(3 days after quake) 3.510 km NORTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 08:42:00 GMT(3 days after quake) 4.114 km Philippines: 015 Km S 83° W of Mamburao (Occidental Mindoro) [Show on map] More 23 Sep 2021 08:44:08 GMT(3 days after quake) 3.610 km NORTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 09:01:34 GMT(3 days after quake) 4.110 km Kazakhstan: SOUTHWESTERN SIBERIA, RUSSIA [Show on map] More 23 Sep 2021 11:07:00 GMT(3 days after quake) 3.921 km Philippines: 045 Km N 06° W of Pagudpud (Ilocos Norte) [Show on map] More 23 Sep 2021 11:55:14 GMT(3 days after quake) 4.210 km NORTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 12:26:19 GMT(3 days after quake) 3.910 km NORTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 12:30:07 GMT(3 days after quake) 3.410 km SOUTHERN XINJIANG, CHINA [Show on map] More 23 Sep 2021 12:45:52 GMT(3 days after quake) 3.910 km EASTERN KAZAKHSTAN [Show on map] More 23 Sep 2021 12:51:27 GMT(3 days after quake) 3.113 km Japan: W OFF AMAKUSA ISLAND [Show on map] More
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