The Ancash Earthquake Buries Yungay Under Huascaran

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• Disaster09/21/2026@ScienceDesk

  The Kahramanmaras Earthquakes Devastate Turkey and Syria

  Pazarcik, Kahramanmaras Province, Turkey

  Starts 02/06/2023 1:17AMCONFIRMED92% CONFIDENCE3.6 years agoThe source^[1] times the first shock exactly: "The first earthquake occurred at 04:17:35 TRT (01:17:35 UTC), measuring moment magnitude (Mw) of 7.8." The USGS^[2][3] catalogue records 01:17:34Z for event us6000jllz.

  A magnitude 7.8 strike-slip earthquake hit southern Turkey at 04:17 local time and reached Mercalli intensity XII around the epicentre and in Antakya. A magnitude 7.5 shock followed nine hours later.

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• Energy09/22/2026@EnergyDesk

  Hidroituango Dam Crisis Forces Mass Evacuation in Colombia

  EPMItuango, Antioquia, Colombia

  Starts 05/12/2018CONFIRMED81% CONFIDENCE8.4 years agoHappened as dated, per the source^[1]: "On 12 May, a sudden release of water from the dam flooded municipalities of Puerto Valdivia and Taraza downstream."

  A blocked diversion tunnel at Colombia's roughly $4 billion Hidroituango hydroelectric project triggered flooding and landslides that forced thousands of people downstream to evacuate.

  $4B

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• Disaster09/21/2026@ScienceDesk

  The Haiti Earthquake Wrecks Port-au-Prince

  Leogane, Ouest, Haiti

  

  Starts 01/12/2010 9:53PMCONFIRMED93% CONFIDENCE16.7 years agoThe source^[1] states the quake "struck Haiti at 16:53 local time on Tuesday, 12 January 2010", which is 21:53 UTC; the USGS^[2] catalogue records 21:53:10Z for event usp000h60h.

  A magnitude 7.0 earthquake struck near Leogane, 25 km west of Port-au-Prince, at 16:53 local time. Haiti's capital, its National Palace and much of its public administration were destroyed.

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• Disaster09/21/2026@ScienceDesk

  The Strongest Earthquake Ever Recorded Hits Valdivia

  Offshore Valdivia, Los Rios, Chile

  

  Starts 05/22/1960 7:11PMCONFIRMED93% CONFIDENCE66.3 years agoThe USGS^[2][3] catalogue gives 1960-05-22T19:11:20Z as the origin time of event official19600522191120_30; the source^[1] states "19:11:14 UTC, 15:11:14 local time", six seconds earlier, and the catalogue value is used here.

  A magnitude 9.5 megathrust rupture off southern Chile shook for ten minutes — the strongest earthquake ever instrumentally recorded. Its tsunami crossed the Pacific and struck Hilo, Hawaii, with waves 10.7 m high.

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• Infrastructure09/14/2026@ThePinGang

  Japan Decides to Wall Off Its Coast After the Tōhoku Tsunami

  Rikuzentakata, Iwate, JapanMinistry of Land, Infrastructure, Transport and Tourism

  

  Starts 03/11/2011CONFIRMED75% CONFIDENCE15.5 years agoThe seawall program has no single completion date and remains partly unfinished as of 2026, so this pin is dated to the 11 March 2011 Tōhoku tsunami — the confirmed, exact date of the disaster that led Japan to commit to building it (construction of the network itself began in 2012, per contemporary sources).^[1]

  Weeks after a tsunami kills nearly 20,000 people, Japan commits to a chain of concrete seawalls along 400 km of the Tōhoku coast — a decision that is still dividing the fishing towns behind it.

  $8.2B

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• Weather09/21/2026@ClimateDesk

  Typhoon Haiyan Makes Landfall at Guiuan

  Guiuan, Eastern Samar, Philippines

  Starts 11/07/2013 8:40PMCONFIRMED87% CONFIDENCE12.9 years agoThe landfall is timed in UTC by the source^[1]: "At 20:40 UTC on November 7, 2013, the eye of the typhoon made its first landfall in the Philippines at Guiuan, Eastern Samar at maximum strength." That is early on 8 November local time, the date the storm is known by in the Philippines.

  One of the most intense tropical cyclones ever recorded came ashore in Eastern Samar at peak strength, with PAGASA measuring ten-minute winds of 235 km/h. At least 6,300 died in the Visayas alone.

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• Architecture09/15/2026@BuildDesk

  Christ Church Cathedral Reinstatement Targets 2027 Completion

  ChristChurch Cathedral, Cathedral Square, Christchurch, New Zealand

  

  Starts 12/31/2027ESTIMATED57% CONFIDENCEin 1.3 yearsGiven as scheduled, per the source^[1]: "the project is officially listed with a completion target of 2027, though the restoration could be completed as early as 2028."

  Christchurch, New Zealand is rebuilding its earthquake-destroyed Anglican cathedral, the city's best-known landmark, with completion targeted for 2027 as part of a wider USD $42BN post-quake rebuild.

  $42B

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• Disaster09/21/2026@ScienceDesk

  The Great Lisbon Earthquake Destroys Lisbon

  Lisbon, Portugal

  

  Starts 11/01/1755CONFIRMED90% CONFIDENCE270.9 years agoThe source^[1] dates it firmly — the earthquake "hit the Iberian Peninsula and Northwest Africa on the morning of Saturday, 1 November, Feast of All Saints, at around 09:40 local time". The day is certain; the hour is only "around", so the pin is all-day rather than timed.

  A magnitude 7.7-or-greater earthquake struck off Cape St. Vincent on the morning of All Saints' Day, and fires and a tsunami finished what the shaking began. Between 30,000 and 40,000 died in Lisbon alone.

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• Disaster09/21/2026@ScienceDesk

  Mount St. Helens Blows Out Its North Face

  Mount St. Helens, Skamania County, Washington, United States

  Starts 05/18/1980 3:32PMCONFIRMED88% CONFIDENCE46.4 years agoThe moment is recorded to the second: "An earthquake at 8:32:11 am PDT (UTC-7) on May 18, 1980, caused the entire weakened north face to slide away", which is 15:32:11 UTC.^[1]

  An earthquake at 8:32 a.m. local time dropped the volcano's weakened north face away in the largest subaerial landslide on record, uncorking a lateral blast toward Spirit Lake. Fifty-seven people were killed.

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• Transport09/15/2026@BuildDesk

  Golden Gate Bridge District Approves Final $1BN Seismic Retrofit Phase

  Golden Gate Bridge, San Francisco, CA, USAGolden Gate Bridge, Highway and Transportation District

  

  Starts 10/24/2025CONFIRMED84% CONFIDENCE335 days agoHappened as dated, per the source^[1]: "voted Friday to authorize about $1.01 billion in allocations toward the project."

  The district that runs the Golden Gate Bridge signed off on roughly $1 billion in funding for the final stage of a decades-long project to keep the span standing through a major earthquake.

  $1B

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• Architecture09/14/2026@BuildDesk

  Salt Lake Temple Completes Seismic Base-Isolation Retrofit

  Salt Lake Temple, Salt Lake City, UT, United StatesThe Church of Jesus Christ of Latter-day Saints

  

  Starts 06/30/2026CONFIRMED88% CONFIDENCE86 days agoHappened as dated, per the source^[1]: "Starting Thursday, June 25, construction crews removed over 1,500 bolts connecting 392 plates to the base isolators."

  Crews finished installing a base-isolation system beneath the 19th-century Salt Lake Temple as part of an estimated $2.4 billion project to let the building float free of the ground during a major earthquake.

  $2.4B

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• Disaster09/21/2026@ScienceDesk

  The Tangshan Earthquake Levels a City of a Million

  Tangshan, Hebei, China

  

  Starts 07/27/1976 7:42PMCONFIRMED93% CONFIDENCE50.2 years agoThe source^[1] is explicit about both clocks: the quake hit "at 03:42:55 on 28 July (19:42:55, 27 July UTC) 1976". The pin is stored in UTC, so it falls on 27 July even though the earthquake is known by its local date of 28 July.

  A magnitude 7.5 earthquake struck directly beneath Tangshan at 3:42 a.m. local time, and within minutes 85% of the city's buildings were down. The official toll was 242,469 dead; historians accept at least 300,000.

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