Mw 7.0 Southeastern Missouri

updated 22 January 2023

report

On 16 December 1811 a major earthquake occurred in southeastern Missouri. The seismic event occurred at 13:15 UTC and had an estimated moment magnitude (Mw) 7.0.

The estimated primary trigger of this seismic event is critical lunar geometry with Jupiter and Saturn due to Earth's position between the two Jovians, which were on opposite sides of the Solar System in 1811-1812.

Three planetary conjunctions involving Earth occurred from 9 to 12 December 1811, significant of which were those involving Mercury with Jupiter and Saturn, which occurred in opposite fashion. Lunar conjunctions with the Jovians occurred on 16 December, but critical lunar right and semi-right angles already occurred on 9 and 12-13 December respectively. This geometry (including Mercury) is comparable to the geometry that preceded the 2011 mega-thrust earthquake. Conjunctions with Earth, the Sun, Jupiter and Saturn occurred on 21 and 23 December 1811. As Earth moved in the same direction as Jupiter, critical lunar geometry with the two Jovians continued to occur during the first half of 1812.

The earthquake occurred at a lunar conjunction with the Sun (New Moon). It was preceded by a major earthquake several hours earlier.

#MoonUranus #MoonNeptune #MoonSaturn #NewMoon #olra #lsra


MAP

SSGI chart
earthquake map

SSGI

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

SSGI chart
SSGI SUM graph of critical planetary (PG) geometry

geometry

Earth-Mercury-Saturn      1811-12-09,  8:14:22  270°13'24"
Venus-Earth-Jupiter       1811-12-10, 23:44:58   95°32'33"
Mercury-Earth-Jupiter     1811-12-12, 15:19:37   95°19'48"

Venus:   Mars-Saturn      1811-12-21, 14:32:51  135°00'00"
Earth:   Mercury-Mars     1811-12-22,  3:07:15   45°00'00"
Earth:   Venus-Mars       1811-12-22,  9:26:16   45°00'00"
Sun:     Mercury-Neptune  1811-12-22, 13:41:58   90°00'00"
Mercury: Earth-Mars       1811-12-23, 21:40:42   90°00'00"
Sun:     Venus-Saturn     1811-12-24,  6:05:06   45°00'00"
Mercury: Venus-Mars       1811-12-24, 17:14:38   90°00'00"
Sun:     Venus-Jupiter    1811-12-25, 15:48:42  135°00'00"
Sun:     Mercury-Saturn   1811-12-26, 13:34:56   90°00'00"
Sun:     Mercury-Jupiter  1811-12-27,  0:47:17   90°00'00"
Sun:     Mercury-Venus    1811-12-27, 15:28:46   45°00'00"
Sun:     Mercury-Uranus   1811-12-27, 16:35:41  135°00'00"
Sun:     Mercury-Earth    1811-12-27, 18:52:57   90°00'00"
Sun:     Venus-Uranus     1811-12-27, 19:00:59   90°00'00"
Mercury: Sun-Jupiter      1811-12-27, 19:42:49   90°00'00"
Venus:   Earth-Neptune    1811-12-28, 10:40:48  135°00'00"
Mercury: Earth-Neptune    1811-12-28, 15:25:21  135°00'00"
Sun:     Venus-Earth      1811-12-28, 15:30:47  135°00'00"

Earth-Moon-Uranus         1811-12-13, 13:59:24  233°40'22"
Earth-Moon-Neptune        1811-12-15,  3:10:51  253°58'58"
Earth-Moon-Sun            1811-12-16,  0:17:17  265°50'08"
Earth-Moon-Saturn         1811-12-16,  9:27:32  271°03'00"
Moon-Earth-Jupiter        1811-12-16, 16:00:52   94°47'57"
Earth-Moon-Mercury        1811-12-17,  5:07:43  282°20'50"
Earth-Moon-Venus          1811-12-17,  7:01:20  283°26'32"

Earth:   Moon-Mercury     1811-12-09,  4:50:37   90°00'00"
Earth:   Moon-Saturn      1811-12-09,  5:15:36   90°00'00"
Earth:   Moon-Venus       1811-12-09, 12:19:08   90°00'00"
Earth:   Moon-Jupiter     1811-12-09, 16:23:48   90°00'00"
Earth:   Moon-Uranus      1811-12-09, 21:57:33   45°00'00"
Earth:   Moon-Mars        1811-12-10,  2:16:17  135°00'00"
Earth:   Moon-Neptune     1811-12-11, 14:30:31   45°00'00"
Earth:   Moon-Sun         1811-12-12,  6:23:23   45°00'00"
Earth:   Moon-Saturn      1811-12-12, 22:53:06   45°00'00"
Earth:   Moon-Jupiter     1811-12-13,  7:33:49  135°00'00"
Earth:   Moon-Mercury     1811-12-13,  9:58:55   45°00'00"
Earth:   Moon-Venus       1811-12-13, 14:14:20   45°00'00"
Earth:   Moon-Mars        1811-12-13, 22:57:37   90°00'00"
Earth:   Moon-Uranus      1811-12-16, 23:04:56   45°00'00"
Earth:   Moon-Mars        1811-12-17, 11:41:47   45°00'00"
Earth:   Moon-Neptune     1811-12-18,  9:55:45   45°00'00"
  					

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