# Light mag. 3.4 earthquake - 4.8 km east of Christchurch, Canterbury, New Zealand, on Sunday, May 23, 2021 at 23:49 (GMT) - writeAge(1621813745)

Quakes around its antipode during the following 3 days
Check different time intervals: 24 hours | 2 days
Date & time: 23 May 2021 23:49:05 UTC -
Magnitude: 3.4
Depth: 9.1 km
Epicenter latitude / longitude: 43.5318°S / 172.6928°E (Christchurch City, Canterbury, New Zealand)
Antipode latitude / longitude: 43.532°N / 7.307°W (Spain)
Primary data source: GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
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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 22.59 quakes during preceding intervals of 3 days with a standard deviation (σ) of 40.9, calculated by analzing all 100 preceding intervals of 3 days for the same region.
Interpretation:
Note: At a magnitude of 3.4, 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 0.2 -0 (-0.2σ) 5+ 0 0.3 0.8 -0.3 (-0.4σ) 4+ 1 2.4 4.8 -1.4 (-0.3σ) 3+ 17 19.8 35.7 -2.8 (-0.1σ) Total 18 22.59 40.9 -4.6 (-0.1σ)
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+
Showing quakes magnitude 3.0 or higher (total: 18).
 Date and time MagDepth Location Details 24 May 2021 01:52:17 GMT(2 hours and 3 minutes after quake) 3.02 km REPUBLIC OF NORTH MACEDONIA [Show on map] More 24 May 2021 02:59:07 GMT(3 hours after quake) 3.02 km REPUBLIC OF NORTH MACEDONIA [Show on map] More 24 May 2021 04:25:46 GMT(5 hours after quake) 3.940 km Portugal: AZORES-CABO DE SAN VICENTE [Show on map] More 24 May 2021 05:09:23 GMT(5 hours after quake) 3.2166 km Italy: Costa Calabra Sud-occidentale (Catanzaro, Vibo Valentia, Reggio Di Calabria) [Show on map] More 24 May 2021 13:44:58 GMT(14 hours after quake) 3.112 km Greece: 38 Km SSE From Katerini [Show on map] More 24 May 2021 14:52:24 GMT(15 hours after quake) 3.288 km Spain: 3.2 STRAIT OF GIBRALTAR [Show on map] More 24 May 2021 18:54:36 GMT(19 hours after quake) 3.221 km Algeria: E TISSEMSILT.ARG [Show on map] More 24 May 2021 20:32:10 GMT(21 hours after quake) 3.178 km Greece: 75 Km SW From Andikithira [Show on map] More 24 May 2021 21:36:39 GMT(22 hours after quake) 3.48 km Iceland: 5.2 Km SE of Helgafell [Show on map] More 25 May 2021 12:32:54 GMT(1 day 13 hours after quake) 3.615 km Greece: 35 Km WSW From Karditsa [Show on map] More 25 May 2021 14:42:43 GMT(1 day 15 hours after quake) 3.218 km Greece: 52 Km NW From Mithimna [Show on map] More 25 May 2021 21:30:37 GMT(1 day 22 hours after quake) 4.4124 km Romania [Show on map] More 25 May 2021 21:31:23 GMT(1 day 22 hours after quake) 3.110 km Bulgaria: 101 Km NW From Orestias [Show on map] More 26 May 2021 01:39:33 GMT(2 days after quake) 3.26 km NORTHERN ALGERIA [Show on map] More 26 May 2021 02:03:22 GMT(2 days after quake) 3.59 km Near Bejaia, Béjaïa, Algeria [Show on map] More 26 May 2021 17:11:41 GMT(3 days after quake) 3.00 km Poland: EASTERN PART OF WEST EUROPEAN PLATFORM [Show on map] More 26 May 2021 17:11:47 GMT(3 days after quake) 3.61 km Poland [Show on map] More 26 May 2021 19:52:29 GMT(3 days after quake) 3.719 km Greece: 68 Km SSE From Santorini [Show on map] More
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