‘Massive disruption’: UK’s worst-case climate crisis scenarios revealed by scientists
18-12-2025
Scientists say government must prepare for unlikely but ‘plausible’ 4C rise in temperature and a 2-metre rise in sea levels
Flooding in Wraysbury, England, last year. Photograph: Daniel Leal/AFP/Getty Images
The worst-case impacts of the climate crisis for the UK have been laid bare by scientists, ranging from a scorching 4C rise in temperatures to a 2-metre rise in sea level. Another scenario sees a plunge of 6C in temperature after the collapse of key Atlantic Ocean currents, massively disrupting farming and energy needs.
The impacts, some of which are linked to climate tipping points, are seen as low probability but plausible. The researchers said the scenarios filled a gap in forecasting that had left the UK unprepared for extreme outcomes.
A second set of worst-case scenarios sets out the potential extent of extreme weather between now and the end of the century. These indicate that temperatures could soar in some months by up to 6C above average, while rainfall could be triple normal levels.
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