Mw 6.8 Santa Cruz Islands Region
updated 29 May 2021 UTC

On 20 May 2015 a strong earthquake occurred in the Santa Cruz Islands Region. The seismic event occurred at 22:48:53 UTC and had an estimated moment magnitude (Mw) 6.8.

The same geometry that was responsible for the strong earthquake at the Pacific Antarctic Ridge a day earlier, also caused this strong earthquake in the Santa Cruz Islands Region. See the report below.

Mars-Earth-Saturn        2015-05-15,  5:36:59  241°59'59"
Mars-Mercury-Saturn      2015-05-19, 12:15:22  242°24'43"
SSGI chart
SSGI depiction of planetary (PG) and lunar (LG) geometry


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