What happened on the night of 14 October

Rain reached Istanbul on the morning of 13 October 2026, and by the following night it had turned into one of the heaviest downpours the city has seen in decades. The Istanbul Metropolitan Municipality's disaster coordination centre, AKOM, reported 50–95 millimetres across northern and central districts in its 14 October update, with 10–40 millimetres elsewhere; Interior Minister Mustafa Ciftci later said some districts received up to 272 millimetres.

The heaviest rain fell on Wednesday night, flooding homes and businesses, inundating roads and underpasses, and stranding vehicles across Turkey's largest city. Thunderstorm downpours can overwhelm a city's drainage in minutes, and that is what happened across Istanbul's northern districts. Ayazağa, in the Sarıyer district, was among the worst hit: AFAD, firefighters, coast guard personnel and municipal teams used boats and heavy equipment to evacuate people trapped at businesses along Kemerburgaz Street. Flooding on Mustafa Kemal Atatürk Street interrupted electricity to homes and businesses, while teams searched inundated basement areas.

Water also swamped Esenyurt, Sultangazi, Balat in the Fatih district, Maslak, Beykoz, Beşiktaş and Beyoğlu, with roads caving in and traffic grinding to a near standstill. Aerial images showed the shoreline of the Bosphorus turning brown with sediment washed in by the deluge. Operations were under way at 14 locations and 16 roads remained closed, according to the governor's office. At Istanbul Airport, 51 flights were diverted and 19 cancelled. Municipal teams responded to 1,901 reports, deploying 8,392 personnel with 2,246 vehicles and machines. In Sakarya province, about 150 kilometres east of Istanbul, a two-storey house built on a riverbed collapsed in the floods, HaberTurk television reported; it was not immediately known whether anyone was inside.

The confirmed toll so far

On Thursday 15 October, the Istanbul governor's office reported three deaths in the city. One person died of electric shock and two drowned, the interior minister said. A teenager was electrocuted after stepping into accumulated water in Balat; a 34-year-old died after slipping and striking his head while crossing a flooded road in Ayazağa; and a third body was recovered near a stream in Kağıthane on 15 October, with identification work continuing. Three other people were receiving hospital treatment without life-threatening injuries.

Authorities also reported people missing: three as of Thursday afternoon, the governor's office said, while later ministerial briefings put the figure higher. The Istanbul Metropolitan Municipality said some areas had received their heaviest rainfall since 1985.

Interior Minister Ciftci said at least 2,700 people stranded by the floods had been evacuated; a later briefing raised the number of people pulled to safety past 3,000. Officials received 12,372 emergency reports across the provinces under weather warnings, 9,755 of them in Istanbul, with 7,456 confirmed through Istanbul's 112 Emergency Call Center. In Istanbul, 46,597 personnel were deployed, including 8,597 in search, rescue and first-response roles, supported by 2,288 vehicles and 14 boats; AFAD sent 1,000 volunteers to the field. Nationwide, 58,085 personnel were on duty. Large-scale rescue operations like this one depend on the same mix of fire, medical and military teams that responded to other recent disasters.

How officials responded

The governor's office suspended classes across the city for Thursday and then extended the closure through Friday, and some state employees were placed on leave. Motorcycles were barred from traffic from 9pm on Wednesday until further notice. Istanbul Governor Davut Gül urged residents to remain at home unless travel was necessary, advised people living in basement apartments to spend the night on higher floors, and told residents to avoid creek beds, underpasses and other flood-prone areas.

Türkiye's Interior Ministry had warned of flash flooding in several provinces on Wednesday and Thursday. People who asked for shelter were placed in public guesthouses, and the minister said evacuations of residents trapped in the Ayazağa area had been completed. Official alerts only work when people act on them quickly, and the governor's office repeated its guidance throughout the night.

Why the water rose so fast

A city of about 16 million people produces vast areas of concrete and asphalt where rain cannot soak in, so an extreme downpour becomes surface flooding almost immediately. Northern districts such as Sarıyer sit on steeper ground where water gathers speed, and narrow stream beds that normally run dry can become dangerous channels in minutes. The collapsed house in Sakarya — built, according to HaberTurk, on a riverbed — showed how building in the path of water turns a bad storm into a structural disaster. The country's weather agency predicted more showers for Istanbul and the surrounding area in the coming days.

The Istanbul floods: how to stay safe in urban flooding

The deaths in Istanbul show the two hazards that kill most often in city floods: electricity in standing water, and falls in moving water. Keep these rules in mind:

  • Never step into accumulated floodwater. The Balat electrocution happened in an ordinary puddle at a car-park entrance. Floodwater can hide live cables, open manholes and strong currents — assume every flooded street is dangerous.
  • Avoid underpasses, creek beds and basements during warnings. Underpasses flood first and drain last; basement rooms can fill in minutes. Move to an upper floor at the first sign of rising water.
  • Turn around — don't wade or drive through moving water. Emergency agencies warn that fast-moving water can sweep a person off their feet and carry away vehicles; if floodwater rises around your car, abandon it for higher ground.
  • Stay home unless travel is absolutely necessary. That was the governor's central message, and it kept countless people out of the worst-affected areas.
  • Watch for weather warnings and act early. Türkiye's Interior Ministry issued flash-flood warnings before the worst of the rain; in Istanbul, the 112 Emergency Call Center confirmed thousands of incidents. More showers were forecast, so conditions can change quickly. Our thunderstorm and hail safety guide and our cold-weather safety guide cover more of the season's hazards.

Transport systems are often the first casualty of extreme weather, as the Istanbul flight cancellations and road closures showed — check travel advisories before setting out.

What our records show, and what they miss

Our records show the official picture as reported by Turkish authorities: the rainfall figures, the confirmed deaths, the missing-person reports, the scale of the evacuation and rescue deployment, and the emergency measures — school closures, the motorcycle ban, and shelter arrangements. These are the verified numbers, attributed to the officials who released them.

What the records miss is the speed of an urban flash flood. No warning system reaches every resident in time, and the first evidence of damage almost always comes from residents themselves before official figures catch up. Missing-person numbers change as searches progress, and full damage assessments for homes and businesses take days. Treat early figures as floors, not totals, and keep checking official channels.

The short version

  • Rain that began on 13 October intensified on the night of 14 October 2026, flooding homes, roads and underpasses across Istanbul; some districts saw their heaviest rain since 1985.
  • At least three people are confirmed dead, at least three were reported missing, and at least 2,700 people were evacuated, according to the Istanbul governor's office and the interior minister.
  • Schools were ordered closed through Friday, motorcycles were barred from the roads, and residents were told to stay home and avoid basements, underpasses and creek beds.
  • Istanbul Airport diverted 51 flights and cancelled 19; 16 roads remained closed as nearly 46,600 personnel worked on rescue and response.
  • More showers were forecast — if flooding hits: never step into standing water near electrics, move to higher floors, turn around rather than crossing moving water, and call emergency services.