# Reported seismic-like event (likely no quake): 30 km north of Catania, Sicily, Italy, Oct 25, 2021 7:38 pm (GMT +2) - writeAge(1635183485)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 25 Oct 2021 17:38:05 UTC -
Local time at epicenter: Monday, Oct 25, 2021 7:38 pm (GMT +2)
Magnitude: 3?
Depth: ? km
Epicenter latitude / longitude: 37.75°N / 14.99°E (Catania, Sicily, Italy)
Antipode latitude / longitude: 37.75°S / 165.01°W
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 11. This is compared to the average number of 0.13 quakes during preceding intervals of 3 days with a standard deviation (σ) of 1.4, 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 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+ 2 0 0.2 2 (8.9σ) 4+ 7 0.1 1 6.9 (6.9σ) 3+ 2 0 0.2 2 (8.1σ) Total 11 0.13 1.4 10.9 (7.5σ)
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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3.0+
4.0+
5.0+
Showing quakes magnitude 3.0 or higher (total: 11).
 Date and time MagDepth Location Details 26 Oct 2021 05:24:42 GMT(12 hours after quake) 4.733 km New Zealand [Show on map] More 26 Oct 2021 14:59:03 GMT(21 hours after quake) 4.4425 km New Zealand [Show on map] More 26 Oct 2021 18:01:51 GMT(1 day 0 hours after quake) 4.533 km New Zealand [Show on map] More 26 Oct 2021 18:46:14 GMT(1 day 1 hours after quake) 4.957 km New Zealand: Kermadec Islands Region [Show on map] More 27 Oct 2021 01:35:51 GMT(1 day 8 hours after quake) 4.2561 km 223 Km E of Levuka, Fiji [Show on map] More 27 Oct 2021 06:10:44 GMT(1 day 13 hours after quake) 5.633 km New Zealand [Show on map] More 27 Oct 2021 07:32:07 GMT(1 day 14 hours after quake) 4.5506 km South of the Fiji Islands [Show on map] More 27 Oct 2021 13:51:56 GMT(1 day 20 hours after quake) 4.4362 km New Zealand [Show on map] More 27 Oct 2021 17:21:28 GMT(1 day 24 hours after quake) 3.6540 km New Zealand [Show on map] More 28 Oct 2021 06:03:11 GMT(3 days after quake) 5.010 km 167 Km S of ‘Ohonua, Tonga [Show on map] More 28 Oct 2021 14:36:58 GMT(3 days after quake) 3.7227 km New Zealand [Show on map] More
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