Séisme mineur mag. 1.1 - Italy: 5 Km S Bagnoli Irpino (AV), lundi, 20 sept. 2021 08:43 (GMT +2) -

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 20 Sep 2021 06:43:46 UTC -
Heure locale à l'épicentre: lundi, 20 sept. 2021 08:43 (GMT +2)
Magnitude: 1.1
Profondeur: 7.1 km
Épicentre latitude / longitude: 40.7937°N / 15.0857°E (Italie)
Antipode sismique latitude / longitude: 40.794°S / 164.914°W
Source de données principale: INGV (Istituto Nazionale di Geofisica e Vulcanologia)
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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 13. This is compared to the average number of 18.11 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 33.3, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Note: At a magnitude of 1.1, 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+ (0σ)
4+88.48.9-0.4 (-0σ)
3+05.817.8-5.8 (-0.3σ)
Total1318.1133.3-5.1 (-0.2σ)
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:
Showing quakes magnitude 3.0 or higher (total: 13).
Date et l'heureMag
20 Sep 2021 08:35:54 GMT
(1 heure et 52 minutes after quake)

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

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

10 km
Tonga Islands [Show on map]Plus
21 Sep 2021 04:42:49 GMT
(22 heures after quake)

320 km
162 Km W of Hihifo, Tonga [Show on map]Plus
21 Sep 2021 15:30:09 GMT
(1 jour 9 heures after quake)

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

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

515 km
Fiji: New Zealand [Show on map]Plus
22 Sep 2021 16:28:33 GMT
(2 jours after quake)

33 km
New Zealand [Show on map]Plus
22 Sep 2021 17:33:00 GMT
(2 jours after quake)

10 km
New Zealand [Show on map]Plus
22 Sep 2021 17:44:29 GMT
(2 jours after quake)

10 km
Kermadec Islands, New Zealand [Show on map]Plus
22 Sep 2021 19:57:25 GMT
(3 jours after quake)

368 km
New Zealand: Kermadec Islands Region [Show on map]Plus
22 Sep 2021 19:57:27 GMT
(3 jours after quake)

383 km
New Zealand [Show on map]Plus
23 Sep 2021 02:03:50 GMT
(3 jours after quake)

395 km
South of the Fiji Islands [Show on map]Plus
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