# Unconfirmed earthquake or seismic-like event: Cuauhtémoc Borough, 1.6 km northwest of Mexico, Sep 23, 2021 9:59 pm (GMT -5) - writeAge(1632452347)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 24 Sep 2021 02:59:07 UTC -
Local time at epicenter: Thursday, Sep 23, 2021 9:59 pm (GMT -5)
Magnitude: unknown
Depth: ? km
Epicenter latitude / longitude: 19.4355°N / 99.1406°W (Cuauhtémoc Borough, Mexico D.F., Mexico)
Antipode latitude / longitude: 19.436°S / 80.859°E
Primary data source: VolcanoDiscovery
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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 5. This is compared to the average number of 6.47 quakes during preceding intervals of 3 days with a standard deviation (σ) of 5.3, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 3.0, 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 days.
 Mag class Total # Average σ Observed deviation 6+ 0 0 0.2 -0 (-0.2σ) 5+ 0 0.6 0.8 -0.6 (-0.7σ) 4+ 4 2 2 2 (1σ) 3+ 1 3.8 3.4 -2.8 (-0.8σ) Total 5 6.47 5.3 -1.5 (-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

Showing quakes magnitude 3.0 or higher (total: 5).
 Date and time MagDepth Location Details 24 Sep 2021 05:49:51 GMT(2 hours and 51 minutes after quake) 4.182 km Southwest of Sumatra, Indonesia [Show on map] More 24 Sep 2021 23:39:38 GMT(21 hours after quake) 3.410 km Southern Sumatra, Indonesia [Show on map] More 26 Sep 2021 04:08:36 GMT(2 days after quake) 4.510 km British Indian Ocean Territory: Chagos Archipelago Region [Show on map] More 26 Sep 2021 08:59:51 GMT(2 days after quake) 4.818 km Southern Sumatra, Indonesia [Show on map] More 26 Sep 2021 12:01:01 GMT(2 days after quake) 4.449 km Southern Sumatra, Indonesia [Show on map] More
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