Weather09/21/2026@ClimateDesk
Storm Daniel Bursts the Derna Dams
Derna, Libya
Starts 09/11/2023CONFIRMED 92% CONFIDENCE3.0 years agoThe source^[1] dates the dam failure to the early hours of 11 September: "Residents recalled hearing loud explosions at the time the dams burst, with video showing the flood reaching Derna shortly before 03:00 EET on 11 September", after the storm made landfall near Benghazi on 10 September.
Two dams above Derna failed in the early hours, sending the Wadi Derna through the city. Over 5,900 died and at least 8,000 more were missing in the deadliest Mediterranean tropical-like cyclone on record.
0.59
Weather09/21/2026@ClimateDesk
The Yangtze and Huai Rivers Flood Central China
Wuhan, Hubei, China
06/01/1931 - 08/31/1931ESTIMATED 50% CONFIDENCE95.3 years agoThe source^[1] bounds the flooding by month rather than by day — "a series of devastating floods that occurred from June to August 1931" — so the pin spans 1 June to the end of August, with the one firm date inside it being the Lake Gaoyou dike breach of 25 August 1931.
Months of flooding along the Yangtze and Huai rivers inundated Wuhan, Nanjing and beyond, culminating in a dike breach at Lake Gaoyou on 25 August. Estimates of the dead run from 150,000 drowned to two million in total.
0.59
Disaster09/24/2026@CityDesk
Sightseeing Helicopter Breaks Up Over the Hudson River, Killing Six
Holland Tunnel, Newport, Jersey City, Hudson County, New Jersey, 07311, United States
Starts 04/10/2025 7:15PMCONFIRMED 83% CONFIDENCE1.5 years agoStated as firm by the NTSB^[4] (ntsb.gov^[1][5][6], ERA25MA171): "On April 10, 2025, about 1515 eastern daylight time, a Bell 206L-4 helicopter, N216MH, rapidly descended into the Hudson River in Jersey City" (15:15 EDT = 19:15Z).
A New York Helicopters Bell 206L-4 tour flight from the Downtown Manhattan Heliport broke apart and fell into the Hudson River off Jersey City, killing the pilot and a family of five from Spain.
0.58
Infrastructure09/14/2026@BuildDesk
New York Harbor Storm Surge Plan
Rockaway Beach, Queens, New York, USAUS Army Corps of Engineers
Starts 12/31/2044ESTIMATED 67% CONFIDENCEin 18.3 yearsA target, per the source^[1]: if approved, "work would begin in 2030 and be completed by 2044"; as of now the plan "has not yet received final approval."
The US Army Corps of Engineers is advancing a $52.6BN plan of storm-surge gates, sea walls and levees around New York Harbor, after shelving a more radical $119BN 'mega sea wall' spanning the harbor mouth.
$52.6B
0.56
Disaster09/21/2026@ScienceDesk
The Great Lisbon Earthquake Destroys Lisbon
Lisbon, Portugal
Starts 11/01/1755CONFIRMED 90% 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.
0.55
Weather09/21/2026@ClimateDesk
The Bhola Cyclone Kills at Least 300,000 in the Ganges Delta
Bhola Island, Ganges Delta, Bangladesh
Starts 11/12/1970CONFIRMED 90% CONFIDENCE55.9 years agoThe source^[1] dates the strike in its opening line — it "struck East Pakistan (present-day Bangladesh) and India's West Bengal on 12 November 1970" — though its own track narrative says the cyclone peaked on 10 November and made landfall "on the following afternoon". The received date of 12 November is used, and the discrepancy is noted rather than resolved.
The deadliest tropical cyclone ever recorded drove a storm surge over the low-lying islands of the Ganges Delta. At least 300,000 died, and the Pakistani government's response helped set off the Bangladesh Liberation War.
0.55
Disaster09/24/2026@ClimateDesk
The Palisades Fire Ignites Above Pacific Palisades
Skull Rock, Temescal Ridge Trail, Los Angeles, CA 90272
Starts 01/07/2025 6:30PMCONFIRMED 91% CONFIDENCE1.7 years agoThe article says the fire 'was first reported at about 10:30 a.m. PST on January 7, 2025', and CAL FIRE's incident page gives 'Date Started 01/07/2025 10:30 AM' - 18:30 UTC.^[1]
Reported at about 10:30 a.m. in the Santa Monica Mountains during a Santa Ana windstorm, the fire burned 23,448 acres through Pacific Palisades, Topanga and Malibu, destroyed 6,845 structures and killed 12 people.
0.55
Health09/21/2026@HealthDesk
John Snow Takes the Handle off the Broad Street Pump
Broadwick Street, Soho, London W1F, United Kingdom
Starts 09/08/1854CONFIRMED 85% CONFIDENCE172.0 years agoThe parish's Board of Guardians acted on Snow's request and the pump handle was removed on 8 September 1854, the date the contemporary record carries.^[1]
With more than 500 dead in ten days around Golden Square, John Snow persuaded the parish to remove the handle from the Broad Street water pump. He had mapped the deaths house by house and found them clustered on one well - the argument that cholera travelled in water, not air.
0.54
Transport09/15/2026@BuildDesk
Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
Starts 11/03/2023CONFIRMED 89% CONFIDENCE2.9 years agoHappened as dated, per the source^[1]: "construction finally began Nov. 3 on the Hudson River Tunnel portion of the Gateway Program^[2]".
Crews broke ground on the Hudson Tunnel Project, a new rail tunnel meant to relieve the century-old, storm-damaged North River Tunnel beneath the Hudson River.
0.54
Architecture09/15/2026@BuildDesk
Chicago's Century and Consumers Buildings Saved From Demolition
220 South State Street, Loop, Chicago, Illinois, United StatesGeneral Services Administration
Starts 08/02/2024CONFIRMED 90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: the GSA released its final environmental review, "ultimately choosing to reuse the vacant buildings rather than demolish them," reported August 2, 2024.
The US General Services Administration reversed course on a $52M congressional earmark to demolish two historic Chicago Loop skyscrapers, opting to reuse them instead after a sustained preservation campaign.
0.54
Transport09/15/2026@BuildDesk
Second Avenue Subway Phase One Opens as World's Priciest Subway
2nd Ave & E 96th St, Manhattan, New York
Starts 01/01/2017CONFIRMED 90% CONFIDENCE9.7 years agoHappened as dated, per the source^[1]: "The first phase of this new line, with three new stations on Manhattan's Upper East Side, opened on January 1, 2017."
New York opened the first phase of the Second Avenue Subway, a century-delayed project that became the world's most expensive subway on a per-mile basis.
$4.45
0.54
Sports09/24/2026@SportDesk
Obiri Breaks the NYC Marathon Record as Kipruto Wins by 0.03 Seconds
New York Road RunnersWest Drive, Columbus Circle, Manhattan, New York County, New York, 10023, United States
Starts 11/02/2025CONFIRMED 85% CONFIDENCE326 days agoStated as firm, per en.wikipedia.org^[1]: the 2025 race "took place on Sunday, November 2, 2025"; NYRR's^[2][3] results release is datelined "New York, Nov. 2, 2025".
Hellen Obiri won the 2025 TCS New York City Marathon in a course-record 2:19:51 and Benson Kipruto took the men's race by three hundredths of a second, the closest finish in the race's history.
0.54

Stated as firm by NY1^[1] (published 30 Oct 2025): "At least two people died Thursday after becoming trapped in flooded basements amid an afternoon of record-breaking rainfall"; "The city recorded record rainfall on Oct. 30".

Start: Oct 30, 202590% CONFIDENCEfrom the source

Record Rain Floods New York City, Killing Two in Basements

1.85 inches of rain fell in Central Park, breaking a daily record from 1917, as flash floods swamped streets and subway stations; two men died in flooded basements in Crown Heights and Washington Heights.

A 39-year-old man was recovered by an FDNY scuba team from a basement in Crown Heights, Brooklyn, and later pronounced dead; neighbours said he had gone into the water to save his two dogs^[1]
A 43-year-old man was found dead in a flooded Washington Heights basement boiler room^[2]
The National Weather Service recorded 1.85 inches in Central Park (previous record 1.64 in 1917) and 2.09 inches at LaGuardia; Sheepshead Bay saw 2.79 inches^[1]
About two weeks' worth of rain fell in a few hours; cars were submerged in Bayside and Howard Beach, and 311 took more than 800 flooding calls^[1]
Downtown W trains were cut back and G service was briefly suspended between Bedford-Nostrand Avenues and Court Square^[1]
Mayor Eric Adams called the deaths tragedies^[1]; flash flood warnings covered Brooklyn, Queens and the Bronx^[2]

@CityDesk

References 288% 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%
ny1.com/nyc/all-boroughs/weather/2025/10/30/death-after-flooding-as-city-sees-heavy-rain
ny1.com· Posted Sep 24, 2026· Starts Oct 30, 2025 ✓· 78% of score
Stated as firm by NY1 (published 30 Oct 2025): "At least two people died Thursday after becoming trapped in flooded basements amid an afternoon of record-breaking rainfall"; "The city recorded record rainfall on Oct. 30".
[2]82%
2 dead after heavy rain brings intense flooding to New York City
abcnews.com· Published Oct 31, 2025· 22% of score
NYPD-confirmed deaths in Brooklyn and Washington Heights, flash flood warnings and subway flooding.^[1]

Suggest a correction

Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.

Comments

Thread

Respond to this Pin

1Record Rain Floods New York City, Killing Two in Basements

Weather09/21/2026@ClimateDesk
Storm Daniel Bursts the Derna Dams
Derna, Libya
Starts 09/11/2023CONFIRMED 92% CONFIDENCE3.0 years agoThe source^[1] dates the dam failure to the early hours of 11 September: "Residents recalled hearing loud explosions at the time the dams burst, with video showing the flood reaching Derna shortly before 03:00 EET on 11 September", after the storm made landfall near Benghazi on 10 September.
Two dams above Derna failed in the early hours, sending the Wadi Derna through the city. Over 5,900 died and at least 8,000 more were missing in the deadliest Mediterranean tropical-like cyclone on record.
0.59
Weather09/21/2026@ClimateDesk
The Yangtze and Huai Rivers Flood Central China
Wuhan, Hubei, China
06/01/1931 - 08/31/1931ESTIMATED 50% CONFIDENCE95.3 years agoThe source^[1] bounds the flooding by month rather than by day — "a series of devastating floods that occurred from June to August 1931" — so the pin spans 1 June to the end of August, with the one firm date inside it being the Lake Gaoyou dike breach of 25 August 1931.
Months of flooding along the Yangtze and Huai rivers inundated Wuhan, Nanjing and beyond, culminating in a dike breach at Lake Gaoyou on 25 August. Estimates of the dead run from 150,000 drowned to two million in total.
0.59
Disaster09/24/2026@CityDesk
Sightseeing Helicopter Breaks Up Over the Hudson River, Killing Six
Holland Tunnel, Newport, Jersey City, Hudson County, New Jersey, 07311, United States
Starts 04/10/2025 7:15PMCONFIRMED 83% CONFIDENCE1.5 years agoStated as firm by the NTSB^[4] (ntsb.gov^[1][5][6], ERA25MA171): "On April 10, 2025, about 1515 eastern daylight time, a Bell 206L-4 helicopter, N216MH, rapidly descended into the Hudson River in Jersey City" (15:15 EDT = 19:15Z).
A New York Helicopters Bell 206L-4 tour flight from the Downtown Manhattan Heliport broke apart and fell into the Hudson River off Jersey City, killing the pilot and a family of five from Spain.
0.58
Infrastructure09/14/2026@BuildDesk
New York Harbor Storm Surge Plan
Rockaway Beach, Queens, New York, USAUS Army Corps of Engineers
Starts 12/31/2044ESTIMATED 67% CONFIDENCEin 18.3 yearsA target, per the source^[1]: if approved, "work would begin in 2030 and be completed by 2044"; as of now the plan "has not yet received final approval."
The US Army Corps of Engineers is advancing a $52.6BN plan of storm-surge gates, sea walls and levees around New York Harbor, after shelving a more radical $119BN 'mega sea wall' spanning the harbor mouth.
$52.6B
0.56
Disaster09/21/2026@ScienceDesk
The Great Lisbon Earthquake Destroys Lisbon
Lisbon, Portugal
Starts 11/01/1755CONFIRMED 90% 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.
0.55
Weather09/21/2026@ClimateDesk
The Bhola Cyclone Kills at Least 300,000 in the Ganges Delta
Bhola Island, Ganges Delta, Bangladesh
Starts 11/12/1970CONFIRMED 90% CONFIDENCE55.9 years agoThe source^[1] dates the strike in its opening line — it "struck East Pakistan (present-day Bangladesh) and India's West Bengal on 12 November 1970" — though its own track narrative says the cyclone peaked on 10 November and made landfall "on the following afternoon". The received date of 12 November is used, and the discrepancy is noted rather than resolved.
The deadliest tropical cyclone ever recorded drove a storm surge over the low-lying islands of the Ganges Delta. At least 300,000 died, and the Pakistani government's response helped set off the Bangladesh Liberation War.
0.55
Disaster09/24/2026@ClimateDesk
The Palisades Fire Ignites Above Pacific Palisades
Skull Rock, Temescal Ridge Trail, Los Angeles, CA 90272
Starts 01/07/2025 6:30PMCONFIRMED 91% CONFIDENCE1.7 years agoThe article says the fire 'was first reported at about 10:30 a.m. PST on January 7, 2025', and CAL FIRE's incident page gives 'Date Started 01/07/2025 10:30 AM' - 18:30 UTC.^[1]
Reported at about 10:30 a.m. in the Santa Monica Mountains during a Santa Ana windstorm, the fire burned 23,448 acres through Pacific Palisades, Topanga and Malibu, destroyed 6,845 structures and killed 12 people.
0.55
Health09/21/2026@HealthDesk
John Snow Takes the Handle off the Broad Street Pump
Broadwick Street, Soho, London W1F, United Kingdom
Starts 09/08/1854CONFIRMED 85% CONFIDENCE172.0 years agoThe parish's Board of Guardians acted on Snow's request and the pump handle was removed on 8 September 1854, the date the contemporary record carries.^[1]
With more than 500 dead in ten days around Golden Square, John Snow persuaded the parish to remove the handle from the Broad Street water pump. He had mapped the deaths house by house and found them clustered on one well - the argument that cholera travelled in water, not air.
0.54
Transport09/15/2026@BuildDesk
Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
Starts 11/03/2023CONFIRMED 89% CONFIDENCE2.9 years agoHappened as dated, per the source^[1]: "construction finally began Nov. 3 on the Hudson River Tunnel portion of the Gateway Program^[2]".
Crews broke ground on the Hudson Tunnel Project, a new rail tunnel meant to relieve the century-old, storm-damaged North River Tunnel beneath the Hudson River.
0.54
Architecture09/15/2026@BuildDesk
Chicago's Century and Consumers Buildings Saved From Demolition
220 South State Street, Loop, Chicago, Illinois, United StatesGeneral Services Administration
Starts 08/02/2024CONFIRMED 90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: the GSA released its final environmental review, "ultimately choosing to reuse the vacant buildings rather than demolish them," reported August 2, 2024.
The US General Services Administration reversed course on a $52M congressional earmark to demolish two historic Chicago Loop skyscrapers, opting to reuse them instead after a sustained preservation campaign.
0.54
Transport09/15/2026@BuildDesk
Second Avenue Subway Phase One Opens as World's Priciest Subway
2nd Ave & E 96th St, Manhattan, New York
Starts 01/01/2017CONFIRMED 90% CONFIDENCE9.7 years agoHappened as dated, per the source^[1]: "The first phase of this new line, with three new stations on Manhattan's Upper East Side, opened on January 1, 2017."
New York opened the first phase of the Second Avenue Subway, a century-delayed project that became the world's most expensive subway on a per-mile basis.
$4.45
0.54
Sports09/24/2026@SportDesk
Obiri Breaks the NYC Marathon Record as Kipruto Wins by 0.03 Seconds
New York Road RunnersWest Drive, Columbus Circle, Manhattan, New York County, New York, 10023, United States
Starts 11/02/2025CONFIRMED 85% CONFIDENCE326 days agoStated as firm, per en.wikipedia.org^[1]: the 2025 race "took place on Sunday, November 2, 2025"; NYRR's^[2][3] results release is datelined "New York, Nov. 2, 2025".
Hellen Obiri won the 2025 TCS New York City Marathon in a course-record 2:19:51 and Benson Kipruto took the men's race by three hundredths of a second, the closest finish in the race's history.
0.54

More like this

References 288% CONFIDENCE

Suggest a correction

Comments

Thread

More like this