Mw 6.7 Vanuatu
updated 4 June 2021 UTC

On 6 April 2016 a strong earthquake occurred at Vanuatu at a depth of 30km. The seismic event occurred at 06:58:49 UTC and had an estimated moment magnitude (Mw) 6.7.

This was the second strong earthquake at Vanuatu in a series of three from 3 to 7 April. Given the high lunar peak on the 5th, it should be considered a contributor to the earthquakes on 6 and 7 April. The lunar peak would certainly have been a reason to issue a warning for seismic activity in the higher 6 to 7 magnitude range later on the 5th or 6th.

Mercury-Sun-Saturn       2016-04-04, 17:12:42  251°04'57"
Sun-Venus-Neptune        2016-04-07,  6:31:11  339°29'57"
Mars-Venus-Uranus        2016-04-07, 23:36:01   21°34'39"
          
SSGI chart
SSGI depiction of planetary (PG) and lunar (LG) geometry

 

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