Mw 7.5 Southern California

updated 24 January 2023

report

On 8 December 1812 a major earthquake occurred in Southern California. The seismic event occurred at 15:00 UTC and had an estimated moment magnitude (Mw) 7.5.

The estimated primary trigger of this seismic event is critical planetary and lunar geometry from 2 to 6 December 1812.

Critical planetary geometry with Mercury and Venus involving Uranus occurred on 2-3 December 1812. On 4 December lunar conjunctions occurred with the Sun (New Moon) and Neptune within 2 hours, followed by Earth's conjunction with the Sun and Neptune a day later. Another planetary conjunction occurred on 6 December involving Mercury, the Sun and Venus. Earth was in a near conjunction with Mercury and Saturn when the earthquake occurred.

A second major earthquake occurred two weeks later at the Santa Barbara Channel.

#MoonSaturn #MoonJupiter #NewMoon #mvra #lsra #clra

MAP

earthquake map

SSGI

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

SSGI chart

SSGI SUM graph of critical planetary (PG) geometry

geometry

Earth-Sun-Neptune         1812-12-05,  7:46:47  255°43'31"
Mercury-Sun-Venus         1812-12-06,  7:10:20  154°46'31"
Earth-Mercury-Saturn      1812-12-09, 14:39:12  280°21'05"

Sun:     Venus-Uranus     1812-12-01,  5:10:04   90°00'00"
Sun:     Venus-Saturn     1812-12-01, 13:09:22  135°00'00"
Sun:     Mercury-Mars     1812-12-01, 18:12:41  135°00'00"
Venus:   Earth-Neptune    1812-12-02,  8:33:41  135°00'00"
Mercury: Venus-Uranus     1812-12-02,  8:48:52   90°00'00"
Mercury: Venus-Saturn     1812-12-02, 11:58:31  135°00'00"
Venus:   Mercury-Uranus   1812-12-03, 19:26:20   90°00'00"
Sun:     Mercury-Uranus   1812-12-04,  4:28:47   90°00'00"
Sun:     Mercury-Saturn   1812-12-04,  8:12:24   45°00'00"
Venus:   Mercury-Saturn   1812-12-04,  9:11:16   45°00'00"
Mercury: Saturn-Uranus    1812-12-06,  5:47:05   45°00'00"
Venus:   Mercury-Mars     1812-12-07, 22:49:25  135°00'00"
Sun:     Mercury-Neptune  1812-12-08, 22:18:46   90°00'00"
Sun:     Mercury-Jupiter  1812-12-09, 10:30:48  135°00'00"
Venus:   Mercury-Jupiter  1812-12-09, 11:29:35  135°00'00"
Mercury: Earth-Uranus     1812-12-09, 19:45:24  135°00'00"
Sun:     Mercury-Earth    1812-12-10,  0:06:42   90°00'00"
Mercury: Venus-Neptune    1812-12-10,  9:40:38   90°00'00"

Earth-Moon-Uranus         1812-12-02, 19:44:38  237°21'05"
Earth-Moon-Sun            1812-12-04,  5:49:06  254°37'34"
Earth-Moon-Neptune        1812-12-04,  7:53:38  255°41'16"
Earth-Moon-Mercury        1812-12-05, 22:42:26  275°45'04"
Earth-Moon-Saturn         1812-12-06,  6:46:46  279°58'37"
Moon-Earth-Jupiter        1812-12-08, 17:36:36  131°24'07"

Earth:   Moon-Jupiter     1812-12-01, 12:17:02   90°00'00"
Earth:   Moon-Mercury     1812-12-01, 19:08:44   45°00'00"
Earth:   Moon-Saturn      1812-12-02, 14:12:10   45°00'00"
Earth:   Moon-Mars        1812-12-04,  4:40:39   45°00'00"
Earth:   Moon-Venus       1812-12-04, 15:48:07   45°00'00"
Earth:   Moon-Jupiter     1812-12-05,  4:58:38  135°00'00"
Earth:   Moon-Uranus      1812-12-06, 11:42:59   45°00'00"
Earth:   Moon-Neptune     1812-12-07, 22:03:07   45°00'00"
Earth:   Moon-Mars        1812-12-07, 23:10:22   90°00'00"
Earth:   Moon-Sun         1812-12-08,  3:10:26   45°00'00"
Earth:   Moon-Venus       1812-12-08, 14:01:12   90°00'00"
Earth:   Moon-Saturn      1812-12-09, 19:01:00   45°00'00"
Earth:   Moon-Mercury     1812-12-09, 19:23:42   45°00'00"
Earth:   Moon-Uranus      1812-12-09, 23:20:16   90°00'00"