| 2Qtr May 17 19:54 NM May 25 12:26 | 1960 | 22 | May | Valdivia, Chile | 1960 Valdivia earthquake | 9.5 | ||
| 1Qtr Mar 20 20:39 Fm Mar 28 02:48 | 1964 | 27 | March | Prince William Sound, Alaska, USA | 1964 Alaska earthquake | 9.2 | ||
| Dec 18 16:40 Dec 26 15:06 | 2004 | 26 | December | Indian Ocean, Sumatra, Indonesia | 2004 Indian Ocean earthquake | 9.1–9.3 | ||
| FM Nov 1 23:10 2Qtr Nov 9 15:43 | 1952 | 4 | November | Kamchatka, Russia (then USSR) | 1952 Kamchatka earthquakes | 9.0[3] | ||
| ar 4 20:46 Mar 12 23:45 | 2011 | 11 | March | Pacific Ocean, Tōhoku region, Japan | 2011 Tōhoku earthquake | 9.0[4][5][6] | ||
| 1611 | 2 | December | Pacific ocean, Hokkaido, Japan | 1611 Sanriku earthquake | 8.9- (est.) | |||
| 1615 | 16 | September | Arica, Chile (then part of the Spanish Empire) | 1615 Arica earthquake | 8.8 (est.) | |||
| 1Qtr Apr 1 23:46 FM Apr 8 16:43 | 1762 | 2 | April | Chittagong, Bangladesh (then Kingdom of Mrauk U) | 1762 Arakan earthquake | 8.8 (est.) | ||
| 1st Qtr Nov 19 07:49 FM Nov 27 07:08 | 1833 | 25 | November | Sumatra, Indonesia (then part of the Dutch East Indies) | 1833 Sumatra earthquake | 8.8–9.2 (est.) | ||
| NM Jan 24 17:09 1QtrFeb 1 12:31 | 1906 | 31 | January | Ecuador – Colombia | 1906 Ecuador-Colombia earthquake | 8.8 | ||
| Feb 22 00:42 Feb 28 16:38 | 2010 | 27 | February | Bio-Bio, Chile | 2010 Chile earthquake | 8.8 | ||
| 1700 | 26 | January | Pacific Ocean, USA and Canada (then part of the British Empire) | 1700 Cascadia earthquake | 8.7–9.2 (est.)[7] | |||
| 1707 | 28 | October | Pacific Ocean, Shikoku region, Japan | 1707 Hōei earthquake | 8.7-9.3 (est.) | |||
| FM Jun 30 08:49 2Qtr Jul 7 03:01 NM Jul 15 04:54 | 1730 | 8 | July | Valparaiso, Chile (then part of the Spanish Empire) | 1730 Valparaiso earthquake | 8.7 (est.)[8] | ||
| 2Qtr Oct 28 06:57 Nm Nov 4 03:09 | 1755 | 1 | November | Atlantic Ocean, Lisbon, Portugal | 1755 Lisbon earthquake | 8.7 (est.)[9] | ||
| NM Feb 1 16:36 1Qtr Feb 9 08:53 | 1965 | 4 | February | Rat Islands, Alaska, USA | 1965 Rat Islands earthquake | 8.7 | ||
| 869 | 9 | July | Pacific Ocean, Tōhoku region, Japan | 869 Sanriku earthquake | 8.6-9.0 (est.) | |||
| 1746 | 28 | October | Lima, Peru (then part of the Spanish Empire) | 1746 Lima-Callao earthquake | 8.6-8.8 (est.) | |||
| 1787 | 28 | March | Oaxaca, Mexico (then part of the Spanish Empire) | 1787 Mexico earthquake | 8.6-8.7 (est.) | |||
| 2Qtr Mar 25 22:37 NM Apr 2 04:37 | 1946 | 1 | April | Aleutian Islands, Alaska, USA | 1946 Aleutian Islands earthquake | 8.6 | ||
| NM Aug 13 16:48 2Qtr Aug 20 15:35 | 1950 | 15 | August | Assam, India – Tibet, China | 1950 Assam – Tibet earthquake | 8.6 | ||
| NM Mar 1 16:12 1Qtr Mar 9 11:50 | 1957 | 9 | March | Andreanof Islands, Alaska, USA | 1957 Andreanof Islands earthquake | 8.6 | ||
| Mar 25 20:58 Apr 2 00:50 | 2005 | 28 | March | Sumatra, Indonesia | 2005 Sumatra earthquake | 8.6 | ||
| Feb 22 00:42 Feb 28 16:38 | 2012 | 11 | April | Indian Ocean, Sumatra, Indonesia | 2012 Aceh earthquake | 8.6 | ||
| 1575 | 16 | December | Valdivia, Chile (then part of the Spanish Empire) | 1575 Valdivia earthquake | 8.5 (est.) | |||
| 1604 | 24 | November | Arica, Chile (then part of the Spanish Empire) | 1604 Arica earthquake | 8.5 (est.) | |||
| 1647 | 13 | May | Santiago, Chile (then part of the Spanish Empire) | 1647 Santiago earthquake | 8.5 (est.) | |||
| 1751 | 24 | May | Concepción, Chile (then part of the Spanish Empire) | 1751 Concepción earthquake | 8.5 (est.) | |||
| NM Nov 13 18:21 1Qtr Nov 21 23:10 | 1822 | 19 | November | Valparaíso, Chile | 1822 Valparaíso earthquake | 8.5 (est.) | ||
| FM Feb 13 11:00 2Qtr Feb 20 04:52 | 1835 | 20 | February | Concepción, Chile | 1835 Concepción earthquake | 8.5 (est.) | ||
| NM Feb 9 20:05 1Qtr Feb 18 00:20 | 1861 | 16 | February | Sumatra, Indonesia | 1861 Sumatra earthquake | 8.5 | ||
| 2Qtr Aug 11 12:29 NM Aug 18 05:12 | 1868 | 13 | August | Arica, Chile (then Peru) | 1868 Arica earthquake | 8.5–9.0 (est.)[10] | ||
| 2Qtr May 5 11:19 NM May 13 05:29 | 1877 | 9 | May | Iquique, Chile (then Peru) | 1877 Iquique earthquake | 8.5-9.0 (est.) | ||
| FM Nov 4 18:36 2Qtr Nov 12 07:52 | 1922 | 10 | November | Atacama Region, Chile | 1922 Vallenar earthquake | 8.5[11] | ||
| NM Jan 31 13:35 1Qtr Feb 8 00:33 | 1938 | 1 | February | Banda Sea, Indonesia (then part of the Dutch East Indies) | 1938 Banda Sea earthquake | 8.5 | ||
| 2Qtr Oct 9 19:27 NM Oct 17 12:43 | 1963 | 13 | October | Kuril Islands, Russia (USSR) | 1963 Kuril Islands earthquake | 8.5[12] | ||
| Sep 11 12:44 Sep 19 16:48 | 2007 | 12 | September | Sumatra, Indonesia | 2007 Sumatra earthquakes | 8.5 | ||
| 1687 | 20 | October | Lima, Peru (then part of the Spanish Empire) | 1687 Peru earthquake | 8.4-8.7 (est.) | |||
| 2Qtr May 13 16:21 NM May 20 23:43 | 1841 | 18 | May | Kamchatka, Russia | 1841 Kamchatka earthquakes | 8.4-8.6(est.) | ||
| 1737 | 17 | October | Kamchatka, Russia | 1737 Kamchatka earthquakes | 8.3-9.0(est.) | |||
| FM Feb 1 15:53 2Qtr Feb 8 09:16 | 1923 | 3 | February | Kamchatka, Russia (USSR) | 1923 Kamchatka earthquakes | 8.3-8.5[12] | ||
| 1361 | 3 | August | Pacific Ocean, Shikoku region, Japan | 1361 Shōhei earthquake | 8.2-8.5 (est.) | |||
| 1498 | 20 | September | Pacific Ocean, Tōkai region, Japan | 1498 Meiō Nankaidō earthquake | 8.2-8.5 (est.) | |||
| NM Jun 11 08:43 1Qtr Jun 18 11:41 | 1896 | 15 | June | Pacific Ocean, Tōhoku region, Japan | 1896 Sanriku earthquake | 8.2-8.5(est.) | ||
| FM Jul 16 15:31 2Qtr Jul 24 13:08 | 1905 | 23 | July | Uvs Province, Mongolia | 1905 Bulnay earthquake |
8.2-8.5
|
I really hate the interface on this site, it is as clunky as lead boots.
I was arranging the times of the lunar phases with the dates of the major earthquakes in recent history when I came to the one for 1730. This one occurred the day after the time of the phase. So I copied the two phases and dates for them either side of the quake when I realised that the cause of the quake was in the lead UP to the time of it and very little to do with much afterwards. (Yes of course I already knew that but if I wasn’t stupid I would have given this job up decades ago.)
So now I have to go through the whole thing again with the previous )phases included (And where do I start with them?
Before a severe earthquake the weather will have been acting very odd for months. What I am looking for is a sharp piece of dried grass, in an haystack.
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