5 August 1854 5:30 UT (23:30 of 4th LT) Mw7.0-7.3 earthquake at the Golfo Dulce, in the Pacific coast of Costa Rica, created a tsunami that destroyed the town of Golfito. Also strongly felt in San José and Cartago. emidius.eu/GEH/info/?en... sinabi.go.cr/ver/biblioteca hndm.iib.unam.mx

5 August 2018 11:47 UT Mw6.9 earthquake devastated northern Lombok Is., Indonesia. Felt from Java to Flores. Combined with the 28 July and the 19 August EQs, death toll of 585 (two in Bali) and more than 400,000 homeless. earthquake.usgs.gov/earthquakes/... hemeroteca.lavanguardia.com/preview/2018/0

5 August 1949 19:09 UT Mw6.5-6.8 earthquake hit west of Ambato, Ecuador. Collapse of buildings, landslides and flooding destroyed several towns and killed at least 5050 people. Near the catastrophic 1797 EQ. earthquake.usgs.gov/earthquakes/... doi.org/10.1111/j.13... nyshistoricnewspapers.org

5 August 1766 5:30 UT Mw7.1 earthquake devastated Tekirdag and NW coast of Sea of Marmara, Turkey, killing 30 people just in Istanbul. Felt in the Carpathians. Preceded by 22 May EQ. emidius.eu/GEH/info/?en... onlinelibrary.wiley.com/doi/10.1111/... babel.hathitrust.org gallica.bnf.fr/ark:/12148/

4 August 1820 M6 earthquake hit Xuchang, Henan province, central China, killing 430 people and destroying 26,000 rooms. Honan is a relatively quiet Chinese province in terms of seismicity. ngdc.noaa.gov/hazel/view/h... gallica.bnf.fr/ark:/12148/b...

4 August 1561 M7.25 earthquake along the Yantong Mountain fault devastated the region to the east of Zhongwei prefecture, Ningsia, Northern China, killing >1000 people. Felt also in Shaanxi and Gansu provinces. emidius.eu/GEH/info/?en... gallica.bnf.fr/ark:/12148/b... ngdc.noaa.gov/hazel/view/h...

4 August 1856 22:47 UT Mw7.7 earthquake at the Gulf of Honduras formed a tsunami that devastated the Caribbean coast of Honduras. Also felt in Belize and Jamaica. doi.org/10.1785/BSSA... cac.unah.edu.hn/gavia/exposi... chroniclingamerica.loc.gov Similar to the 2009 EQ 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · 2mo ago

28 May 2009 8:25 UT Mw7.3 earthquake, in the boundary of North America and Caribbean plates, struck at the Gulf of Honduras. Damage in Belize and Honduras, where 7 people were killed. Felt from Colombia to Cuba. earthquake.usgs.gov/earthquakes/... pandora.girona.cat e-newspaperarchives.ch

4 August 1050 at night M7.6 earthquake at the North Anatolian Fault, ruptured a segment between Çankiri and Amasya, Turkey, destroying many buildings and forcing people to flee. doi.org/10.1111/j.13... dx.doi.org/10.1016/j.te... It happened again in 1943-44 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · 8mo ago

26 November 1943 22:21 UT (1:21 of 27th LT) Mw7.5 Ilgaz-Ladik earthquake in the North Anatolian Fault, Turkey, killed 4020 people. The 3rd in the sequence initiated by the 1939 EQ. earthquake.usgs.gov/earthquakes/... doi.org/10.1002/eqe.... doi.org/10.1111/j.13... nyshistoricnewspapers.org

4 August 1914 22:42 UT (6:42 of 5th LT) Mw7.4 earthquake near Barkol, Hami pref., eastern Sinkiang, NW China, causing rockslides and landslides. Old and mud homes collapsed, killing at least one person. Damage extended to Turpan. earthquake.usgs.gov/earthquakes/... ngdc.noaa.gov/hazel/view/h...

4 August 1998 18:59 UT Mw7.2 subduction earthquake did damage in Manabi province, Ecuador. Three people killed, 40 injured. Felt as far as Cali, Colombia. Other EQs: 1906, 1942 and 2016. earthquake.usgs.gov/earthquakes/... doi.org/10.1785/0120... doi.org/10.1785/0120... e-newspaperarchives.ch

4 August 1902 6:50 UT M5 earthquake off Figueira da Foz, Portugal, causing panic and damage in Soure, near Coimbra. Felt as far as Setúbal, almost 200 km away. casadasciencias.org/recurso/7321 nyshistoricnewspapers.org arquivo.cm-gaia.pt A similar EQ happened in 2018 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · 11mo ago

4 September 2018 6:13 UT Mw4.7 earthquake at the Iberian Abyssal Plain, off the coast of Portugal. It was widely felt along the Portuguese coast, north of Lisbon. One of the largest known EQs on that continental margin. shakemap.ipma.pt/201809040612... emsc-csem.org/Earthquake_i...

4 August 1946 17:51 UT Mw7.8 earthquake at the Puerto Rico Trench hit northern coast of Dominican Republic. Felt from Cuba to Virgin Is. Tsunami killed 100 people in Matanzas, Dominican Rep. earthquake.usgs.gov/earthquakes/... doi.org/10.1785/BSSA... doi.org/10.1785/0120... nyshistoricnewspapers.org

4 August 1885 10:00 UT Mw6.9 earthquake at the French Guyana, caused panic and collapse of walls near epicenter. Felt in all the Guyanas and from Trinidad and Tobago to Belém do Pará (Brazil). Almost unknown... doi.org/10.1785/0220... delpher.nl/nl/kranten/ memoria.bn.gov.br

3 August 1728 16:30 UT Mw5.3 earthquake at Lahr (Baden-Württemberg, Germany), situated in the Rhine Valley, near the border with France, doing damage near epicenter. Felt in southern and central Germany, Switzerland and east of France. emidius.eu/AHEAD/event/... gallica.bnf.fr/ark:/12148/

3 August 2014 8:30 UT Mw6.2 earthquake hit Wenping, Ludian county, NE Yunnan (China), near border with Sichuan and Ghizhou. Collapse of 12,000 buildings left 729 people killed/missing. earthquake.usgs.gov/earthquakes/... e-newspaperarchives.ch M7 not far in 1917 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · last yr.

30 July 1917 20:54 UT (7:54 of 31th LT) Mw7.0 earthquake hit Daguan county, at Sichuan-Yunnan border (China). Rockslides, houses destroyed and 1879 people killed. Also felt in the Guizhou and Chongqing provinces. ngdc.noaa.gov/hazel/view/h... doi.org/10.2307/3673... e-newspaperarchives.ch

2 August 1885 21:20 UT (2:20 of 3rd LT) M6.9-7.6 earthquake destroyed Belodovskoe and Karabalta, west of Bishkek (Kyrgyzstan), killing 54 people. Northern Tien Chan had more great EQs in 1887, 1889 and 1911. caiag.kg/en/projects/... academic.oup.com/gji/article/... nyshistoricnewspapers.org

2-3 August 1951 20:30-0:24-5:26 UT Nine-hour sequence of three Mw5.9-6.1-5.8 earthquakes at the Gulf of Fonseca, near the Cosiguina volcano, NW Nicaragua. Volcano crater fissures sent water that flooded village, killing 1000 people. ngdc.noaa.gov/hazel/view/h... news.google.com/newspapers/

2 August 1361 19:00 UT (4:00 of 3rd LT) M8.4 megathrust earthquake and tsunami hit Shikoku (Japan), destroying >1700 houses and killing >60 people. Like other Nankai Trough EQs, formed a doublet. wwwsoc.nii.ac.jp/ssj/publicat... repository.dl.itc.u-tokyo.ac.jp/dspace/bitst... doi.org/10.1186/s406...

2 August 1968 14:07 UT Mw7.3 subduction earthquake hit Oaxaca, Mexico, collapsing buildings and killing 18 people. Damage and casualities extended to Ciudad de Mexico. earthquake.usgs.gov/earthquakes/... doi.org/10.1785/0220... cdnc.ucr.edu Other ruptures in 1928, 1996 and 2018.

2 August 2019 12:03 UT Mw6.9 earthquake south of Sunda Strait, Indonesia. Damage at buildings in West Java. Tsunami warning and evacuation, later cancelled. Death toll of 8, indirect. Felt from Aceh to Lombok. emsc-csem.org/Earthquake/e... earthquake.usgs.gov/earthquakes/ manilastandard.net/dailypdf

2 August 1819 5:00 UT M7.3 earthquake hit Shiga prefecture, central Honshu, Japan, destroying more than 600 houses and killing 100 people. Felt throughout central Honshu as far as Tokyo. emidius.eu/GEH/info/?en... iss.ndl.go.jp/books/ jstage.jst.go.jp/article/ repository.dl.itc.u-tokyo.ac.jp/dspace/

2 August 1733 5:00 UT M7.8 earthquake along the Xiaojiang fault system hit Dongchuan county, NE Yunnan (China), causing great landslides that killed hundreds of copper miners, apart from 56 other residents. doi.org/10.1016/j.pe... doi.org/10.5194/nhes... cross-currents.berkeley.edu/e-journal/is...

2 August 1821 2:00 UT Mw5.1 earthquake destroyed houses and killed several people in Nicastro and Catanzaro, Calabria, southern Italy. Felt as far as Naples. emidius.mi.ingv.it/ASMI/event/1... anno.onb.ac.at Not far from the M5.8 July 1609 EQ 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · last yr.

20 July 1609 Mw5.8 #earthquake near Nicastro, Calabria, Southern Italy, collapsing churches in Feroleto Antico and Cortale, killing many people. Felt as far as Messina. emidius.mi.ingv.it/ASMI/event/1... researchgate.net/publication/... The area was hit even harder in 1638 👇 bsky.app/profile/jose...

1 August 1968 20:19 UT (4:19 of 2nd LT) Mw7.6 earthquake near Casiguran, at the east coast of Luzon, Philippines, caused the collapse of the Ruby Tower in Manila, killing 329 people. earthquake.usgs.gov/earthquakes/... doi.org/10.1785/BSSA... pdf.usaid.gov/pdf_docs/pna... nyshistoricnewspapers.org

1 August 1940 15:08 UT (0:08 of 2nd LT) Mw7.5 earthquake at Sea of Japan triggered a tsunami that hit west coast of Hokkaido, killing 10 people. In July 1993 there was a M7 EQ south. earthquake.usgs.gov/earthquakes/... repository.dl.itc.u-tokyo.ac.jp doi.org/10.1111/j.14... nyshistoricnewspapers.org

1 August 1629 13:00 UT Mw8.2-8.8 megathrust earthquake, possibly produced at Ceram Trough, Indonesia, generated a 15m tsunami. Many deaths. Other EQs near in 1899 and 1938. frontiersin.org/articles/10.... researchgate.net/publication/... doi.org/10.1144/SP44... catalog.hathitrust.org/Record/10014...

1 August 1725 8-10:00 UT M7.0 earthquake at Xianshuihe fault, hit Kangding, Sichuan, China, collapsing many buildings and killing 556 people. Felt as far as Yaan. doi.org/10.1016/j.pe... doi.org/10.1785/0220... doi.org/10.1785/BSSA... Close EQ in 1955 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · 4mo ago

14 April 1955 1:29 UT Mw7.1 earthquake along the Xianshuihe fault system hit Kangding (western Sichuan, China), destroying houses and causing landslides, killing 94 people. In 1725 there was another M7 EQ. earthquake.usgs.gov/earthquakes/... doi.org/10.1016/j.pe... e-newspaperarchives.ch

1 August 1936 6:24 UT Mw6.2 earthquake south of Tianshui, Gansu, northern China, collapsing 4459 rooms and killing 115 people. Also felt in Shaanxi. doi.org/10.1785/0220... ngdc.noaa.gov/hazel/view/h... archive.org/details/east... Not far from the M8 1654 EQ 👇 bsky.app/profile/jose...

José R. Ribeiro@joserodribeiro.bsky.social · 2w ago

21 July 1654 14-16:00 UT M8.0 earthquake hit Tianshui, SE Gansu, China, killing 30,000 people and causing landslides. Excavations suggest its cause might be West Qinling Fault (WQLF) as the 734 and 1718 EQs. Still controversial... doi.org/10.1785/0220... gallica.bnf.fr/ark:/12148/b...

1 August 1870 0:41 UT Mw6.8 earthquake severely hit the region of Phocis, central Greece, north of Gulf of Corinth, causing the death of 117 people. The area had other M6 EQs in 1769, 1794, 1965 and 1970. doi.org/10.1046/j.13... chroniclingamerica.loc.gov gallica.bnf.fr/ark:/12148/

1 August 1989 0:18 UT Mw6.3 earthquake in Highland Papua, Indonesia, caused landslides that buried two villages, killing 117 people in Kurima district. Near devastating 1976 EQ. earthquake.usgs.gov/earthquakes/... cdn.bmkg.go.id/Web/Katalog-... news.google.com/newspapers?n... e-newspaperarchives.ch