# Séisme mineur mag. 1.9 - Nomos Larisis, 34 km au nord-est de Trikala, Thessaly, Grèce, dimanche, 19 sept. 2021 12:20 (GMT +3) - writeAge(1632043217)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 19 Sep 2021 09:20:17 UTC -
Heure locale à l'épicentre: dimanche, 19 sept. 2021 12:20 (GMT +3)
Magnitude: 1.9
Profondeur: 10.4 km
Épicentre latitude / longitude: 39.8058°N / 21.9859°E (Nomos Larisis, Thessaly, Grèce)
Antipode sismique latitude / longitude: 39.806°S / 158.014°W
Source de données principale: NOA (National Observatory of Athens)
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## Quakes within 30 degrees from seismic antipode up to 3 jours 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 jours around the antipode of the quake was 11. This is compared to the average number of 16.93 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 33.4, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 1.9, 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 jours.
 Mag class Total # Average σ Observed deviation 6+ 1 0.3 1 0.7 (0.7σ) 5+ 2 3.4 7.9 -1.4 (-0.2σ) 4+ 7 7.4 8.8 -0.4 (-0σ) 3+ 1 5.8 17.9 -4.8 (-0.3σ) Total 11 16.93 33.4 -5.9 (-0.2σ)
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

Filtrer par magnitude:
Tous
3.0+
4.0+
5.0+
6.0+
Showing quakes magnitude 3.0 or higher (total: 11).
 Date et l'heure MagProfondeur Lieu Détail 19 Sep 2021 18:07:07 GMT(9 heures after quake) 4.033 km New Zealand [Show on map] Plus 19 Sep 2021 18:53:38 GMT(10 heures after quake) 3.333 km New Zealand [Show on map] Plus 19 Sep 2021 23:29:21 GMT(14 heures after quake) 4.7300 km New Zealand [Show on map] Plus 20 Sep 2021 02:55:24 GMT(18 heures after quake) 4.710 km Pacific-Antarctic Ridge [Show on map] Plus 20 Sep 2021 03:42:41 GMT(18 heures after quake) 4.910 km Pacific Antarctic Ridge [Show on map] Plus 20 Sep 2021 05:51:20 GMT(21 heures after quake) 4.4300 km New Zealand [Show on map] Plus 20 Sep 2021 08:35:54 GMT(23 heures after quake) 4.4598 km Fiji Region [Show on map] Plus 20 Sep 2021 18:08:17 GMT(1 jour 9 heures after quake) 6.0406 km New Zealand [Show on map] Plus 20 Sep 2021 18:34:51 GMT(1 jour 9 heures after quake) 5.910 km Tonga Islands [Show on map] Plus 21 Sep 2021 15:30:09 GMT(2 jours after quake) 4.810 km 121 Km ENE of ‘Ohonua, Tonga [Show on map] Plus 22 Sep 2021 08:36:39 GMT(3 jours after quake) 5.012 km New Zealand [Show on map] Plus
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