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Police in central Chile have airlifted a number of residents to safety after rapidly rising floodwaters trapped them inside their homes, emergency officials confirmed.
The dramatic rescues unfolded in Talagante, a city located roughly 35km (22 miles) south-west of the capital, Santiago, after the Mapocho river broke its banks following a sustained period of torrential rain. Helicopters were deployed to pluck people and their pets from rooftops and patches of high ground along the riverbanks, where dirt roads had been transformed into fast-flowing channels of muddy water.
Authorities said residents in the riverside community were caught off guard by the speed at which the waters rose overnight. Unlike during severe storms that struck the same region in July, no evacuation order had been issued ahead of this latest bout of heavy downpours, leaving many families stranded as the floodwaters closed in.
The scale of the rainfall has alarmed meteorologists. Santiago recorded 74mm of rain during the first seven days of October alone, a total that makes this the wettest October the area has experienced in 76 years of record-keeping. The intensity and duration of the downpours have overwhelmed drainage systems and pushed rivers well beyond their normal channels.
Officials also reported that one person was found dead in a flooded underpass in San Bernardo, a city south of Santiago. Authorities have not yet confirmed the cause of death, and investigations into the circumstances surrounding the fatality are understood to be ongoing.
The human toll of the flooding has been compounded by the suddenness of the event. In Talagante, residents described being surprised by water that arrived with little warning, sweeping through low-lying communities built close to the river. Helicopter crews worked through difficult conditions to reach those cut off, winching people and animals to safety as the floodwaters continued to rise.
Climate experts have pointed to this year's unusually strong El Niño climate phenomenon as a key driver of the extreme weather. They warn that the pattern is likely to continue bringing unusually wet conditions, powerful winds and storms to the region throughout the southern hemisphere's spring, raising the prospect of further flooding in the weeks ahead.
The 2026-2027 El Niño event has been described by forecasters as one of the most intense in living memory, with the potential to cause major shifts in weather patterns around the globe. While some regions are expected to face intensifying droughts, others—central Chile among them—are anticipated to receive above-average rainfall, a forecast that has now been borne out by the events of the past week.
El Niño is a recurring climate pattern characterised by warmer-than-average sea surface temperatures in the central and eastern Pacific Ocean. It typically alters atmospheric circulation in ways that can amplify rainfall in parts of South America while suppressing it elsewhere, and its effects often extend far beyond the Pacific basin.
For Chile, the consequences are felt most acutely in the central valley, where the Mapocho and other rivers drain densely populated areas including Santiago and its surrounding metropolitan region. The combination of steep terrain, urban development on floodplains and increasingly erratic rainfall patterns leaves communities along these waterways particularly exposed.
The flooding in Talagante follows a pattern of extreme weather that has affected multiple parts of the world in recent months. Scientists have noted that August was the joint-hottest month on record, with climate change and El Niño combining to drive global temperatures higher. That background warming trend is widely understood to increase the amount of moisture the atmosphere can hold, potentially making individual rainfall events more intense.
Local authorities in Chile now face questions about preparedness, particularly given that the July storms had already demonstrated the vulnerability of riverside settlements. The absence of a pre-emptive evacuation in Talagante has drawn attention to the challenges of forecasting localised flash flooding, even when broader weather warnings are in place.
For the families rescued by helicopter, the immediate priority is safety and shelter, with many homes left uninhabitable by mud, debris and standing water. Recovery efforts are expected to continue as water levels recede, though forecasters caution that further rain could arrive in the coming days.
The coming spring season will be closely watched by emergency planners across the region. With El Niño expected to remain strong, meteorologists say the risk of additional storms, landslides and river flooding remains elevated, and communities along Chile's central waterways are being urged to remain vigilant.
The events in Talagante serve as a stark illustration of how quickly extreme rainfall can translate into life-threatening conditions—and of the difficult choices facing authorities as they balance the costs of evacuation against the unpredictable behaviour of a changing climate.
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