Mw 6.9 Southern California

updated 27 January 2023

report

On 4 November 1927 a strong earthquake occurred in southern California at a depth of 10 km. The seismic event occurred at 13:51:03 UTC and had an estimated moment magnitude (Mw) 6.9.

The estimated primary trigger of this seismic event is Earth's close proximity (near conjunctions) to the Venus-Jupiter and Venus-Uranus vector causing critical lunar geometry with these planets.

Four planetary conjunctions converged on 1-2 November 1927 involving Mercury and Venus with the outer planets Jupiter, Saturn and Uranus, whereby the Sun, Mercury, Jupiter and Uranus formed a near quadruple conjunction. Earth was in near conjunctions with Venus and Jupiter and also with Venus and Uranus, whereby Earth was in an in-between position both times. This caused critical lunar geometry with these planets on 29-30 October (right angles) and again on 2-3 November (semi-right angles). This particular geometry can potentially result in major seismic activity.

#MoonNeptune #olra #slra

SSGI

SSGI COMMON graph of critical planetary (PG) and lunar (LG) geometry

SSGI chart

SSGI SUM graph of critical planetary (PG) geometry

geometry

Sun-Jupiter-Uranus        1927-10-28,  8:26:31    2°47'30"
Venus-Sun-Saturn          1927-11-01,  4:00:45  250°12'53"
Sun-Mercury-Uranus        1927-11-01, 23:54:21    2°50'29"
Sun-Mercury-Jupiter       1927-11-02,  1:47:36    3°13'25"
Venus-Earth-Jupiter       1927-11-02, 17:35:38  355°06'57"
Mercury-Jupiter-Uranus    1927-11-04,  1:51:10    2°41'09"

Mercury: Venus-Uranus     1927-10-28,  9:07:49   90°00'00"
Mercury: Mars-Saturn      1927-10-28, 21:53:14   45°00'00"
Mercury: Venus-Jupiter    1927-10-29,  1:06:07   90°00'00"
Sun:     Mercury-Mars     1927-10-29, 11:38:59  135°00'00"
Sun:     Mercury-Earth    1927-10-30, 18:12:11   45°00'00"
Mercury: Venus-Earth      1927-11-02,  8:26:01   45°00'00"
Venus:   Mars-Uranus      1927-11-03,  0:57:50  135°00'00"
Sun:     Mercury-Neptune  1927-11-04,  1:28:27  135°00'00"
Mercury: Venus-Neptune    1927-11-04, 15:53:14   45°00'00"
Venus:   Mercury-Neptune  1927-11-05, 11:40:00  135°00'00"
Sun:     Mercury-Saturn   1927-11-06,  8:15:48  135°00'00"

Earth-Moon-Saturn         1927-10-28, 15:59:35  247°06'14"
Moon-Earth-Neptune        1927-11-04,  3:45:53  149°58'42"
Earth-Moon-Jupiter        1927-11-05, 21:37:38  354°57'01"
Moon-Earth-Venus          1927-11-06,  2:32:03  177°57'31"
Earth-Moon-Uranus         1927-11-06,  7:24:24    0°57'37"

Earth:   Moon-Neptune     1927-10-28,  1:27:29   90°00'00"
Earth:   Moon-Mars        1927-10-29, 14:34:42   45°00'00"
Earth:   Moon-Sun         1927-10-29, 20:28:38   45°00'00"
Earth:   Moon-Venus       1927-10-29, 21:44:30   90°00'00"
Earth:   Moon-Jupiter     1927-10-30,  4:08:50   90°00'00"
Earth:   Moon-Uranus      1927-10-30, 15:29:55   90°00'00"
Earth:   Moon-Mercury     1927-10-31, 11:23:36   45°00'00"
Earth:   Moon-Neptune     1927-10-31, 18:01:23  135°00'00"
Earth:   Moon-Saturn      1927-11-01,  8:20:25   45°00'00"
Earth:   Moon-Mars        1927-11-02,  9:20:04   90°00'00"
Earth:   Moon-Venus       1927-11-02, 16:41:54  135°00'00"
Earth:   Moon-Jupiter     1927-11-02, 16:45:26   45°00'00"
Earth:   Moon-Sun         1927-11-02, 17:05:20   90°00'00"
Earth:   Moon-Uranus      1927-11-03,  3:22:40   45°00'00"
Earth:   Moon-Mercury     1927-11-03, 19:07:25   90°00'00"
Earth:   Moon-Saturn      1927-11-04, 17:14:08   90°00'00"
Earth:   Moon-Mars        1927-11-05, 18:59:30  135°00'00"
Earth:   Moon-Sun         1927-11-06,  3:49:53  135°00'00"

map

earthquake map