Full Breakdown
Torrential Rain Paralyzes Istanbul, Triggers Floods and a Fatality
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Istanbul Hit by Record-Scale Torrential Rain
Mid-October 2026, heavy rain swept across Istanbul, inundating streets, underpasses and basements, collapsing sections of road, and forcing authorities to suspend schools for a day. The most severe impacts occurred in Fatih’s Balat neighbourhood, where a 14-year-old boy stepped into a water-filled puddle, received an electric shock and died despite emergency treatment. The governor’s office opened an investigation.
Meteorological Background
The Turkish State Meteorological Service issued warnings on Tuesday evening, forecasting intense precipitation. Acting Mayor Nuri Aslan confirmed that nearly 100 mm of rain fell within 12 hours, with the heaviest measurement of about 194 mm (7.6 inches) recorded in the Omerli area of Beykoz.
Scale of Flooding and Damage
- Incidents: 1,277 flood events, 15 landslides and 47 people stranded.
- Infrastructure: Over 800 homes, 280 businesses and 76 vehicles damaged; road collapses in Eyüp Sultan and Gaziosmanpasa; floodwater entered two hospitals and the Haciosman metro station.
- Traffic: Congestion peaked at roughly 90 % during the evening rush hour, with major bridges—including the Fatih Sultan Mehmet and July 15 Martyrs bridges—experiencing severe slowdowns.
- Personnel: About 8,000 emergency responders, supported by 2,000 vehicles and construction machines, were deployed.
Official Responses and Measures
- Governor Davut Gül ordered residents to stay home unless travel was essential, urged basement occupants to relocate, and banned motorcycles from road use starting Wednesday night.
- Acting Mayor Nuri Aslan suspended in-person classes for Thursday, placed state employees with disabilities and mothers of young children on leave, and warned of continued heavy precipitation, especially on the Asian side.
- Ministry of Transport and Infrastructure reported 43 aircraft diverted from Istanbul Airport to domestic airports such as Ankara’s Esenboga and Istanbul’s Sabiha Gökçen, and to international destinations including Tehran, Burgas and Athens.
- Public Transport Operators suspended several metro, tram and cable-car lines, leading to overcrowding at major transfer hubs as commuters shifted to buses and metrobus routes.
On-the-Ground Impacts
Residents described streets turning into lakes, with vehicles swept away or stranded in underpasses. Bystanders rescued a woman in Esenyurt, and firefighters extracted a person trapped in a flooded basement. In Sultangazi, a school’s retaining wall collapsed while students were inside; no injuries were reported. Power outages affected districts such as Küçükçekmece.
Conflicting Reports & Gaps
- Flight Disruptions: Daily Sabah indicated flights continued operating normally, while the Ministry of Transport confirmed multiple diversions and temporary suspensions at Sabiha Gökçen Airport, highlighting gaps in real-time aviation reporting.
What’s Next
The governor’s office indicated rainfall would persist, particularly around the Bosphorus and on the Asian side, with wind speeds potentially reaching 75–80 km/h. Emergency teams remain on standby, and a crisis desk has been established at the AFAD Istanbul Regional Directorate to coordinate relief. Authorities continue to advise residents to avoid non-essential travel and stay away from flood-prone areas until conditions improve.
