# Séisme mineur mag. 1.2 - 13km SSE of Big Bear Lake, CA, mardi, 14 sept. 2021 07:20 (GMT -7) - writeAge(1631629212)

Quakes around its antipode during the following 3 jours
Check different time intervals: 24 hours | 2 days
Date & heure: 14 Sep 2021 14:20:12 UTC -
Heure locale à l'épicentre: mardi, 14 sept. 2021 07:20 (GMT -7)
Magnitude: 1.2
Profondeur: 8.3 km
Épicentre latitude / longitude: 34.1317°N / 116.8587°W (Californie, États-Unis)
Antipode sismique latitude / longitude: 34.132°S / 63.141°E
Source de données principale: USGS (United States Geological Survey)
Montrer carte interactive
[réduire] [enlarger]

## 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 2. This is compared to the average number of 0.69 quakes during preceding intervals of 3 jours with a standard deviation (σ) of 0.9, calculated by analzing all 100 preceding intervals of 3 jours for the same region.
Interpretation:
Note: At a magnitude of 1.2, 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 a weak increase in detected quakes around the antipode during the following 3 jours.
 Mag class Total # Average σ Observed deviation 6+ 0 0 0.1 -0 (-0.1σ) 5+ 0 0.1 0.3 -0.1 (-0.4σ) 4+ 2 0.2 0.4 1.8 (4.2σ) 3+ 0 0.4 0.6 -0.4 (-0.6σ) Total 2 0.69 0.9 1.3 (1.4σ)
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

Showing quakes magnitude 3.0 or higher (total: 2).
 Date et l'heure MagProfondeur Lieu Détail 15 Sep 2021 07:54:31 GMT(18 heures after quake) 4.7112 km Mid Indian Ridge [Show on map] Plus 17 Sep 2021 03:04:48 GMT(3 jours after quake) 4.710 km French Southern Territories: Mid-Indian Ridge [Show on map] Plus
Découvrez notre app gratuite !
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
• Improved multilanguage support