London residents are being warned to prepare for icy weather and freezing temperatures this winter as the strongest El Niño event in a millennium develops.
The same weather phenomenon was linked to the capital's hottest summer on record, which was marked by wildfires and drought.
Experts now warn of a wet and stormy winter ahead, with the possibility of a polar vortex influencing weather patterns.
Government officials are urging residents to stockpile essentials such as food, water, and cash in case of emergencies.
Defence Secretary Wes Streeting advised that homes maintain supplies to be prepared for potential disasters.
What El Niño and the Polar Vortex Mean for London
El Niño occurs when sea temperatures rise above average, affecting air circulation.
This year's event has been nicknamed "Godzilla" because of its exceptional strength and impact.
The Met Office forecasts rainy, gusty, and stormy weather could affect London as early as this week, with an increased chance of rain and strong winds compared to average seasons.
A Met Office spokesperson explained that a stronger polar vortex can strengthen the jet stream, leading to mild, wet, and windy conditions, while a weaker vortex might increase the likelihood of colder weather in the UK.
Dan Holley, deputy chief forecaster at the Met Office, told the Independent, "A deep area of low pressure could pass close to the UK this week."
He added that this may bring some wet and windy weather for some, which coupled with high spring tides, could bring impacts to some coastal areas in the west.
Forecasters noted there is currently no clear indication of how the polar vortex will specifically affect London, as it is only one factor in assessing upcoming weather patterns.