Séisme très faible mag. 2.2 - 20 km à l'ouest de Larissa, Nomos Larisis, Thessaly, Grèce, dimanche, 19 sept. 2021 18:31 (GMT +3) -

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 19 Sep 2021 15:31:05 UTC -
Heure locale à l'épicentre: dimanche, 19 sept. 2021 18:31 (GMT +3)
Magnitude: 2.2
Profondeur: 12 km
Épicentre latitude / longitude: 39.673°N / 22.1947°E (Nomos Larisis, Thessaly, Grèce)
Antipode sismique latitude / longitude: 39.673°S / 157.805°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 12. This is compared to the average number of 16.93 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 33.5, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 2.2, 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 classTotal #AverageσObserved deviation
6+10.310.7 (0.7σ)
5+23.47.9-1.4 (-0.2σ)
4+87.48.80.6 (0.1σ)
3+15.817.8-4.8 (-0.3σ)
Total1216.9333.5-4.9 (-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

Filtrer par magnitude:
Tous
3.0+
4.0+
5.0+
6.0+
Showing quakes magnitude 3.0 or higher (total: 12).
Date et l'heureMag
Profondeur
LieuDétail
19 Sep 2021 18:07:07 GMT
(2 heures et 36 minutes after quake)
4.0

33 km
New Zealand [Show on map]Plus
19 Sep 2021 18:53:38 GMT
(3 heures after quake)
3.3

33 km
New Zealand [Show on map]Plus
19 Sep 2021 23:29:21 GMT
(8 heures after quake)
4.7

300 km
New Zealand [Show on map]Plus
20 Sep 2021 02:55:24 GMT
(11 heures after quake)
4.7

10 km
Pacific-Antarctic Ridge [Show on map]Plus
20 Sep 2021 03:42:41 GMT
(12 heures after quake)
4.9

10 km
Pacific Antarctic Ridge [Show on map]Plus
20 Sep 2021 05:51:20 GMT
(14 heures after quake)
4.4

300 km
New Zealand [Show on map]Plus
20 Sep 2021 08:35:54 GMT
(17 heures after quake)
4.4

598 km
Fiji Region [Show on map]Plus
20 Sep 2021 18:08:17 GMT
(1 jour 3 heures after quake)
6.0

406 km
New Zealand [Show on map]Plus
20 Sep 2021 18:34:51 GMT
(1 jour 3 heures after quake)
5.9

10 km
Tonga Islands [Show on map]Plus
21 Sep 2021 15:30:09 GMT
(1 jour 24 heures after quake)
4.8

10 km
121 Km ENE of ‘Ohonua, Tonga [Show on map]Plus
22 Sep 2021 08:36:39 GMT
(3 jours after quake)
5.0

12 km
New Zealand [Show on map]Plus
22 Sep 2021 14:01:09 GMT
(3 jours after quake)
4.4

515 km
Fiji: New Zealand [Show on map]Plus
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