Mw 6.6 Andreanof Islands, Aleutian Islands
updated 30 August 2021

On 15 August 2018 a strong earthquake occurred at the Andreanof Islands, Aleutian Islands at a depth of 40 km. The seismic event occurred at 21:56:57 UTC and had an estimated moment magnitude (Mw) 6.6.

A day earlier the Sun-Venus-Saturn alignment occurred converging with a lunar peak and accompanied by additional (somewhat) critical planetary geometry. A day later the Sun-Mercury-Neptune alignment also occurred, which set the stage for the great earthquake on the 19th and a second strong earthquake in the Lombok Region.

Sun-Venus-Saturn          2018-08-14, 14:26:13  277°02'30"
Sun-Mercury-Neptune       2018-08-16, 10:24:10  344°40'59"

Moon-Earth-Mars           2018-08-10,  4:57:33  300°19'14"
Earth-Moon-Sun            2018-08-11,  9:40:13  138°25'57"
Moon-Earth-Neptune        2018-08-13,  5:02:37  345°29'35"
Earth-Moon-Venus          2018-08-14, 17:36:38  187°30'49"
SSGI chart
SSGI depiction of planetary (PG) and lunar (LG) geometry

SSGI chart
SSGI Total geometry


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