Light mag. 3.3 earthquake - Santa Maria Huazolotitlan, 17 km southeast of Santiago Pinotepa Nacional, Mexico, on Saturday, Aug 14, 2021 12:19 pm (GMT -5) -

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 14 Aug 2021 17:19:57 UTC -
Local time at epicenter: Saturday, Aug 14, 2021 12:19 pm (GMT -5)
Magnitude: 3.3
Depth: 5 km
Epicenter latitude / longitude: 16.27°N / 97.91°W (Santa Maria Huazolotitlan, Oaxaca, Mexico)
Antipode latitude / longitude: 16.27°S / 82.09°E
Primary data source: SSN (Servicio Sismológico Nacional)
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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 18. This is compared to the average number of 10.09 quakes during preceding intervals of 3 days with a standard deviation (σ) of 9.6, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 3.3, 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 classTotal #AverageσObserved deviation
6+000.2-0 (-0.2σ)
5+20.60.91.4 (1.5σ)
4+82.72.95.3 (1.8σ)
3+86.76.81.3 (0.2σ)
Total1810.099.67.9 (0.8σ)
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+
4.0+
5.0+
Showing quakes magnitude 3.0 or higher (total: 18).
Date and timeMag
Depth
LocationDetails
14 Aug 2021 18:41:22 GMT
(1 hour and 21 minutes after quake)
5.0

59 km
Southern Sumatra, Indonesia [Show on map]More
14 Aug 2021 19:48:53 GMT
(2 hours and 29 minutes after quake)
4.6

10 km
India: Northern Sumatra [Show on map]More
14 Aug 2021 22:01:27 GMT
(5 hours after quake)
3.4

10 km
Indonesia: Off West Coast of Northern Sumatra [Show on map]More
14 Aug 2021 22:31:25 GMT
(5 hours after quake)
4.2

119 km
Southern Sumatra, Indonesia [Show on map]More
15 Aug 2021 11:22:39 GMT
(18 hours after quake)
3.4

121 km
Northern Sumatra, Indonesia [Show on map]More
15 Aug 2021 13:23:52 GMT
(20 hours after quake)
3.5

24 km
KEP. MENTAWAI REGION, INDONESIA [Show on map]More
15 Aug 2021 17:42:14 GMT
(1 day 0 hours after quake)
4.6

10 km
Northern Sumatra, Indonesia [Show on map]More
15 Aug 2021 19:30:46 GMT
(1 day 2 hours after quake)
3.0

10 km
Northern Sumatra, Indonesia [Show on map]More
16 Aug 2021 13:13:06 GMT
(1 day 20 hours after quake)
5.0

10 km
South Indian Ocean [Show on map]More
16 Aug 2021 13:15:32 GMT
(1 day 20 hours after quake)
4.3

10 km
37km SE of Colombo, Sri Lanka [Show on map]More
16 Aug 2021 13:16:21 GMT
(1 day 20 hours after quake)
4.0

10 km
Southwest of Sumatra, Indonesia [Show on map]More
16 Aug 2021 14:01:01 GMT
(1 day 21 hours after quake)
4.3

10 km
Southwest of Sumatra, Indonesia [Show on map]More
16 Aug 2021 19:14:21 GMT
(2 days after quake)
3.1

20 km
Southern Sumatra, Indonesia [Show on map]More
17 Aug 2021 04:49:15 GMT
(2 days after quake)
4.5

10 km
Java, Indonesia [Show on map]More
17 Aug 2021 10:27:12 GMT
(3 days after quake)
4.2

11 km
Southern Sumatra, Indonesia [Show on map]More
17 Aug 2021 13:33:45 GMT
(3 days after quake)
3.4

10 km
South of Java, Indonesia [Show on map]More
17 Aug 2021 13:45:22 GMT
(3 days after quake)
3.1

10 km
Java, Indonesia [Show on map]More
17 Aug 2021 14:37:01 GMT
(3 days after quake)
3.8

10 km
Southern Sumatra, Indonesia [Show on map]More
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