# Sismo débil mag. 2.8 - Berkeley County, 1.9 miles NNE of Summerville, Dorset County, South Carolina, USA, lunes, 27 sep 2021 12:49 (GMT -4) - writeAge(1632761354)

Quakes around its antipode during the following 3 dás
Check different time intervals: 24 hours | 2 days
Fecha & hora: 27 Sep 2021 16:49:14 UTC -
Hora local al epicentro: lunes, 27 sep 2021 12:49 (GMT -4)
Magnitud: 2.8
Prof.: 6 km
Epicentro latitud / longitud: 33.0437°N / 80.163°W (Condado de Berkeley, Carolina del Sur, Estados Unidos)
Antipode latitud / longitud: 33.044°S / 99.837°E
Fuente primaria de datos: USGS (United States Geological Survey)
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## Quakes within 30 degrees from seismic antipode up to 3 dás 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 dás around the antipode of the quake was 5. This is compared to the average number of 5.09 quakes during preceding intervals of 3 dás with a standard deviation (σ) of 3.3, calculated by analzing all 100 preceding intervals of 3 dás for the same region.
Interpretation:
Note: At a magnitude of 2.8, 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 dás.
 Mag class Total # Average σ Observed deviation 6+ 0 0 0.1 -0 (-0.1σ) 5+ 0 0.2 0.6 -0.2 (-0.4σ) 4+ 2 1.4 1.3 0.6 (0.5σ) 3+ 3 3.5 2.5 -0.5 (-0.2σ) Total 5 5.09 3.3 -0.1 (-0σ)
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: 5).
 Fecha y hora MagProf. Ubicación Detalles 28 Sep 2021 08:11:14 GMT(15 horas after quake) 3.711 km South of Bali, Indonesia [Show on map] Más 28 Sep 2021 12:50:34 GMT(20 horas after quake) 4.510 km Southeast Indian Ridge [Show on map] Más 29 Sep 2021 00:40:20 GMT(1 dia 8 horas after quake) 3.429 km South of Java, Indonesia [Show on map] Más 29 Sep 2021 05:58:46 GMT(1 dia 13 horas after quake) 4.420 km Java, Indonesia [Show on map] Más 30 Sep 2021 11:17:44 GMT(3 dias after quake) 3.110 km Australia: Gascoyne, WA [Show on map] Más
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