Natural Resources Wales issues warning over autumn floods 2026
Natural Resources Wales warns residents in Wales to prepare for severe autumn floods as long-range forecasts predict wetter and windier weather, while only 27% are signed up for alerts.
Stock photo for illustration only, not from the actual event
- Natural Resources Wales (NRW) warns residents to prepare for heightened autumn flood risks.
- Over 274,500 homes and businesses in Wales are currently classed at risk of flooding.
- Only 27% of eligible properties are signed up for phone or email flood warnings.
- Worsening weather extremes are linked to climate change and strong El Niño conditions.
People across Wales are being urged to prepare for what authorities describe as "the unthinkable" as flood response teams warn of a significantly heightened risk of flooding throughout the autumn months. Natural Resources Wales (NRW) stated it is deeply concerned by long-range forecasts indicating an increased likelihood of wetter and windier weather than usual.
According to NRW data, one in seven properties in Wales is currently classified as being at risk of flooding, with more than 274,500 homes and businesses falling into this vulnerable category. This figure is projected to increase substantially by the end of the century. The threats stem from overflowing rivers, tidal sea surges, and surface water flooding when local drainage systems become overwhelmed during intense downpours.
Stock photo for illustration only, not from the actual event
Despite the widespread danger, new figures reveal that just 48,844 out of 181,158 eligible properties—amounting to only 27%—are currently signed up to receive flood alerts via phone or email. Jeremy Parr of NRW admitted that this registration rate is very low, suggesting that some members of the public may be deterred by unfounded myths that signing up could negatively impact their home insurance premiums.
In the town of Monmouth, which remains in the recovery phase following the severe impact of Storm Claudia in November 2025, lifelong residents and friends Malcolm Butcher, Jim Tyler, Brian Churches, and Dave Blake noted they had never witnessed anything comparable to the recent deluge.
"At 2:30 in the morning when it hit it was unbelievable... absolutely raging... If it had happened in the daytime people would have died."
Malcolm Butcher
Recounting the midnight disaster, Malcolm Butcher mentioned that eighteen cars on his street were lost to the floodwaters, including his own vehicle, while houses on the parallel street were completely inundated. He advised that residents can protect themselves by moving valuables to upper floors and keeping sandbags ready ahead of severe weather events.
From an environmental perspective, the increasing frequency of extreme weather events across the UK reflects broader shifts driven by climate change, which intensifies atmospheric moisture cycles. Combined with powerful natural phenomena such as strong El Niño patterns in the Pacific Ocean, autumn and winter seasons are becoming considerably more volatile. Establishing grassroots community flood plans is therefore an essential strategy for mitigating risks and building local resilience against severe meteorological threats.
Sarah Davies from the Met Office added that long-range seasonal forecasts for October, November, and December point toward a greater probability of weather-related disruption, while emphasizing that regional weather patterns can shift rapidly during this period.
Source: BBC Science & Environment
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