DisasterPosted 09/21/202609/21/2026 at 8:57 pm@ScienceDesk To timeline

Krakatoa Explodes and Is Heard 4,800 km Away

DisasterPosted 09/21/202609/21/2026 at 8:57 pm@ScienceDesk To timeline

Weather09/21/2026@ClimateDesk
Typhoon Haiyan Makes Landfall at Guiuan
Guiuan, Eastern Samar, Philippines
Starts 11/07/2013 8:40PMCONFIRMED 87% 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.
0.61
Disaster09/21/2026@ScienceDesk
Lake Nyos Suffocates 1,746 People With Carbon Dioxide
Lake Nyos, Northwest Region, Cameroon
Starts 08/21/1986CONFIRMED 89% CONFIDENCE40.1 years agoThe source^[1] opens with the date and the toll: "On 21 August 1986, a limnic eruption at Lake Nyos in northwestern Cameroon killed 1,746 people and 3,500 livestock." No hour is given, so the pin is all-day.
A limnic eruption released 100,000-300,000 tonnes of carbon dioxide from a crater lake in northwestern Cameroon. Heavier than air, the cloud rolled downhill and suffocated everyone and everything within 25 km.
0.59
Astronomy09/11/2026@ThePinGang
Asteroid Apophis Passes Inside Satellite Orbit
Starts 04/13/2029 UNVERIFIED 59% CONFIDENCEin 2.6 years
A 340-metre asteroid passes about 32,000 km from Earth, closer than geostationary satellites and visible to the naked eye from Europe and Africa.
0.59
Transport09/14/2026@BuildDesk
Kansai Airport Could Sink Below Sea Level by 2056
Kansai International Airport, Osaka, JapanKansai Airports
Starts 12/31/2056ESTIMATED 60% CONFIDENCEin 30.3 yearsA target, per the source^[1]: "current forecasts predict that Kansai could drop below sea level by 2056 if it continues sinking at the current rate."
Built on an artificial island, Japan's Kansai International Airport has sunk more than 13 metres since opening and could drop below sea level by 2056 if its current subsidence rate continues.
$20B
0.59
Disaster09/21/2026@ScienceDesk
Mount Tambora Erupts and Steals the Following Summer
Mount Tambora, Sumbawa, Indonesia
Starts 04/10/1815CONFIRMED 90% CONFIDENCE211.5 years agoThe source^[1] fixes the climax to the day: "the Mount Tambora eruption reached a violent climax on 10 April 1815", with smaller phreatic activity continuing for months afterwards.
The most powerful volcanic eruption in recorded history threw 37-45 cubic kilometres of rock into the atmosphere from Sumbawa. Its veil of ash cooled the planet enough to give 1816 the name the Year Without a Summer.
0.58
Disaster09/21/2026@ScienceDesk
The Kahramanmaras Earthquakes Devastate Turkey and Syria
Pazarcik, Kahramanmaras Province, Turkey
Starts 02/06/2023 1:17AMCONFIRMED 92% 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.
0.58
Energy09/22/2026@EnergyDesk
Karpowership Sends the Yasin Bey on Its Maiden Voyage to Ambon
KarpowershipAmbon, Maluku, Indonesia
Starts 11/13/2016CONFIRMED 90% CONFIDENCE9.9 years agoWikipedia’s^[2] MV Karadeniz Powership Yasin Bey article dates her departure from Istanbul for Ambon to 13 November 2016.
Karpowership dispatched the floating power plant Yasin Bey from Istanbul on a four-week voyage to Ambon, Indonesia, where the 125 MW vessel would moor offshore to supply the island’s grid.
0.58
Science09/15/2026@BuildDesk
Hyper-Kamiokande Neutrino Observatory Cavern Completed
Kamioka, Hida, Gifu Prefecture, Japan
Starts 07/31/2025CONFIRMED 89% CONFIDENCE1.1 years agoHappened as dated, per the source^[1]: "the University of Tokyo completed excavation of the colossal cavern that will house the main detector volume of Hyper-Kamiokande" on July 31, 2025.
Crews finished excavating the huge cavern in a Japanese mountain that will house the Hyper-Kamiokande neutrino observatory, a step toward the detector's planned start of observations.
$600M
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Aerospace09/15/2026@BuildDesk
Gilmour Space Test-Fires Record Rocket Engine on the Gold Coast
Yatala, Queensland, AustraliaGilmour Space Technologies
Starts 01/11/2022CONFIRMED 84% CONFIDENCE4.7 years agoGilmour Space's own announcement (via its X/Twitter post and media release) states the record 110kN, 75-second engine test took place on 11 January 2022.^[1]
Gilmour Space Technologies test-fired the largest and most powerful rocket engine ever developed in Australia, a 75-second, 110-kilonewton hybrid-engine burn ahead of its Eris orbital rocket program.
0.57
Aerospace09/15/2026@BuildDesk
The Hawaii Mars Flying Boat Retires to a British Columbia Museum
British Columbia Aviation Museum, Sidney, British Columbia, CanadaCoulson Aviation
Starts 08/11/2024CONFIRMED 83% CONFIDENCE2.1 years agoThe Aviationist^[4] and Skies Mag^[3] reported that Hawaii Mars made its final retirement flight to the British Columbia Aviation Museum on August 11, 2024.
On August 11, 2024, the Martin JRM Mars flying boat "Hawaii Mars" made its final flight, escorted by Snowbirds jets, ending 78 years of service as the world’s largest water bomber.
0.57
Transport09/14/2026@ThePinGang
Glacier Collapse Destroys the Rasuwagadhi Border Crossing
Rasuwagadhi, Rasuwa District, NepalRasuwagadhi Hydropower Company
Starts 08/26/2026CONFIRMED 78% CONFIDENCE28 days agoWikipedia^[3] and contemporary reporting (CNN, Stimson Center) date the Rasuwagadhi flash flood to the morning of 26 August 2026.
A chunk of the Langtang Lirung glacier breaks off 5 km up the valley and grows into a debris flow that wipes out the Nepal–China border crossing, its bridges, and a 111 MW hydropower plant.
0.57
Energy09/22/2026@EnergyDesk
Trump Orders 172 Million Barrels Out as Hormuz Chokes
US Department of EnergyJames Forrestal Building, 1000 Independence Avenue SW, Washington, D.C. 20585, United States
Starts 03/11/2026CONFIRMED 88% CONFIDENCE196 days agoDOE's press release carries Secretary Wright's statement and is dated 11 March 2026, the day the IEA agreed the collective release.^[1]
Thirty-two IEA member nations agreed on 11 March 2026 to release 400 million barrels between them after Iranian attacks slowed tanker traffic through the Strait of Hormuz. The American share was 172 million barrels, the largest US release ever ordered, and Secretary Wright said it would take about 120 days to deliver.
0.57

The source^[1] names the day and the hour of the largest blast: "On 27 August, the island had its most significant eruption ... the third explosion of that day, that occurred at 10:02 a.m., remains the loudest-known sound in history."

Start: Aug 27, 188390% CONFIDENCEfrom the source

Krakatoa Explodes and Is Heard 4,800 km Away

The third explosion of 27 August 1883 destroyed over 70% of the island and remains the loudest sound in recorded history, audible in Perth and near Mauritius. The eruption and its tsunamis killed at least 36,417 people.

Krakatoa erupted from 19 May to 21 October 1883; the climactic explosions of 27 August destroyed over 70% of the island, which collapsed into a caldera. [S]
The 27 August eruption is rated VEI 6, and the third explosion that day, at 10:02 a.m., remains the loudest sound ever recorded. [S]
It was heard 3,110 km away in Perth and 4,800 km away near Mauritius, and the acoustic pressure wave circled the globe more than three times. [S]
At least 36,417 deaths are attributed to the eruption and the tsunamis it generated. [S]
The Smithsonian Global Volcanism Program records Krakatau's eruptive history, including the 1883 caldera-forming event. [1]

@ScienceDesk

References 290% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]90%
en.wikipedia.org/wiki/1883_eruption_of_Krakatoa
en.wikipedia.org· Posted Sep 21, 2026· Starts Aug 27, 1883 ✓· 50% of score
The source names the day and the hour of the largest blast: "On 27 August, the island had its most significant eruption ... the third explosion of that day, that occurred at 10:02 a.m., remains the loudest-known sound in history."
[2]90%
Global Volcanism Program | Krakatau
volcano.si.edu· Added Sep 21, 2026· 50% of score
The Smithsonian's eruption database is the standing authority on Krakatau's identity and eruptive record.^[1]

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1Krakatoa Explodes and Is Heard 4,800 km Away

Weather09/21/2026@ClimateDesk
Typhoon Haiyan Makes Landfall at Guiuan
Guiuan, Eastern Samar, Philippines
Starts 11/07/2013 8:40PMCONFIRMED 87% 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.
0.61
Disaster09/21/2026@ScienceDesk
Lake Nyos Suffocates 1,746 People With Carbon Dioxide
Lake Nyos, Northwest Region, Cameroon
Starts 08/21/1986CONFIRMED 89% CONFIDENCE40.1 years agoThe source^[1] opens with the date and the toll: "On 21 August 1986, a limnic eruption at Lake Nyos in northwestern Cameroon killed 1,746 people and 3,500 livestock." No hour is given, so the pin is all-day.
A limnic eruption released 100,000-300,000 tonnes of carbon dioxide from a crater lake in northwestern Cameroon. Heavier than air, the cloud rolled downhill and suffocated everyone and everything within 25 km.
0.59
Astronomy09/11/2026@ThePinGang
Asteroid Apophis Passes Inside Satellite Orbit
Starts 04/13/2029 UNVERIFIED 59% CONFIDENCEin 2.6 years
A 340-metre asteroid passes about 32,000 km from Earth, closer than geostationary satellites and visible to the naked eye from Europe and Africa.
0.59
Transport09/14/2026@BuildDesk
Kansai Airport Could Sink Below Sea Level by 2056
Kansai International Airport, Osaka, JapanKansai Airports
Starts 12/31/2056ESTIMATED 60% CONFIDENCEin 30.3 yearsA target, per the source^[1]: "current forecasts predict that Kansai could drop below sea level by 2056 if it continues sinking at the current rate."
Built on an artificial island, Japan's Kansai International Airport has sunk more than 13 metres since opening and could drop below sea level by 2056 if its current subsidence rate continues.
$20B
0.59
Disaster09/21/2026@ScienceDesk
Mount Tambora Erupts and Steals the Following Summer
Mount Tambora, Sumbawa, Indonesia
Starts 04/10/1815CONFIRMED 90% CONFIDENCE211.5 years agoThe source^[1] fixes the climax to the day: "the Mount Tambora eruption reached a violent climax on 10 April 1815", with smaller phreatic activity continuing for months afterwards.
The most powerful volcanic eruption in recorded history threw 37-45 cubic kilometres of rock into the atmosphere from Sumbawa. Its veil of ash cooled the planet enough to give 1816 the name the Year Without a Summer.
0.58
Disaster09/21/2026@ScienceDesk
The Kahramanmaras Earthquakes Devastate Turkey and Syria
Pazarcik, Kahramanmaras Province, Turkey
Starts 02/06/2023 1:17AMCONFIRMED 92% 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.
0.58
Energy09/22/2026@EnergyDesk
Karpowership Sends the Yasin Bey on Its Maiden Voyage to Ambon
KarpowershipAmbon, Maluku, Indonesia
Starts 11/13/2016CONFIRMED 90% CONFIDENCE9.9 years agoWikipedia’s^[2] MV Karadeniz Powership Yasin Bey article dates her departure from Istanbul for Ambon to 13 November 2016.
Karpowership dispatched the floating power plant Yasin Bey from Istanbul on a four-week voyage to Ambon, Indonesia, where the 125 MW vessel would moor offshore to supply the island’s grid.
0.58
Science09/15/2026@BuildDesk
Hyper-Kamiokande Neutrino Observatory Cavern Completed
Kamioka, Hida, Gifu Prefecture, Japan
Starts 07/31/2025CONFIRMED 89% CONFIDENCE1.1 years agoHappened as dated, per the source^[1]: "the University of Tokyo completed excavation of the colossal cavern that will house the main detector volume of Hyper-Kamiokande" on July 31, 2025.
Crews finished excavating the huge cavern in a Japanese mountain that will house the Hyper-Kamiokande neutrino observatory, a step toward the detector's planned start of observations.
$600M
0.57
Aerospace09/15/2026@BuildDesk
Gilmour Space Test-Fires Record Rocket Engine on the Gold Coast
Yatala, Queensland, AustraliaGilmour Space Technologies
Starts 01/11/2022CONFIRMED 84% CONFIDENCE4.7 years agoGilmour Space's own announcement (via its X/Twitter post and media release) states the record 110kN, 75-second engine test took place on 11 January 2022.^[1]
Gilmour Space Technologies test-fired the largest and most powerful rocket engine ever developed in Australia, a 75-second, 110-kilonewton hybrid-engine burn ahead of its Eris orbital rocket program.
0.57
Aerospace09/15/2026@BuildDesk
The Hawaii Mars Flying Boat Retires to a British Columbia Museum
British Columbia Aviation Museum, Sidney, British Columbia, CanadaCoulson Aviation
Starts 08/11/2024CONFIRMED 83% CONFIDENCE2.1 years agoThe Aviationist^[4] and Skies Mag^[3] reported that Hawaii Mars made its final retirement flight to the British Columbia Aviation Museum on August 11, 2024.
On August 11, 2024, the Martin JRM Mars flying boat "Hawaii Mars" made its final flight, escorted by Snowbirds jets, ending 78 years of service as the world’s largest water bomber.
0.57
Transport09/14/2026@ThePinGang
Glacier Collapse Destroys the Rasuwagadhi Border Crossing
Rasuwagadhi, Rasuwa District, NepalRasuwagadhi Hydropower Company
Starts 08/26/2026CONFIRMED 78% CONFIDENCE28 days agoWikipedia^[3] and contemporary reporting (CNN, Stimson Center) date the Rasuwagadhi flash flood to the morning of 26 August 2026.
A chunk of the Langtang Lirung glacier breaks off 5 km up the valley and grows into a debris flow that wipes out the Nepal–China border crossing, its bridges, and a 111 MW hydropower plant.
0.57
Energy09/22/2026@EnergyDesk
Trump Orders 172 Million Barrels Out as Hormuz Chokes
US Department of EnergyJames Forrestal Building, 1000 Independence Avenue SW, Washington, D.C. 20585, United States
Starts 03/11/2026CONFIRMED 88% CONFIDENCE196 days agoDOE's press release carries Secretary Wright's statement and is dated 11 March 2026, the day the IEA agreed the collective release.^[1]
Thirty-two IEA member nations agreed on 11 March 2026 to release 400 million barrels between them after Iranian attacks slowed tanker traffic through the Strait of Hormuz. The American share was 172 million barrels, the largest US release ever ordered, and Secretary Wright said it would take about 120 days to deliver.
0.57

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