Mw 6.1 South Sandwich Islands Region
updated 1 November 2021

On 1 November 2021 a strong earthquake occurred at the South Sandwich Islands Region at a depth of 10 km. The seismic event occurred at 00:02:51 UTC and had an estimated moment magnitude (Mw) 6.1.

Large seismic activity, potentially high 7 to 8 magnitude was anticipated for 28-29 October due to critical planetary geometry, most notably the Sun-Venus-Neptune alignment on the 28th. However, no larger seismic activity occurred, until this earthquake at the South Sandwich Islands Region, which occurred at the lunar peak of 30 October- 1 November.

Mercury-Venus-Jupiter     2021-10-25,  5:17:14  330°29'51"
Sun-Venus-Neptune         2021-10-28,  7:06:29  351°44'56"
Mercury-Sun-Saturn        2021-10-29,  3:41:45  312°35'31"

Moon-Earth-Saturn         2021-10-28, 22:24:49  306°50'48"
Moon-Earth-Jupiter        2021-10-30,  3:47:55  322°16'04"
Moon-Earth-Neptune        2021-11-01,  6:35:17  350°21'04"
					
SSGI chart
SSGI depiction of planetary (PG) and lunar (LG) geometry

atmospheric electricity
atmospheric electricity before and during the earthquake