Brief
Experts warn El Niño could weaken polar vortex and bring colder UK autumn
The strongest El Niño on record may disrupt the Arctic vortex, potentially sending colder air to Britain later in the season.
By Felo News Desk · Published
The independent reports that the current "super" El Niño, described as the strongest ever recorded, could weaken the stratospheric polar vortex, a high‑altitude ring of swirling cold winds above the Arctic. Experts say a weakened vortex may allow Arctic air to plunge further south, possibly bringing freezing temperatures to the UK in autumn and later winter, though they caution that the exact impact remains uncertain.
Forecasters note that a disrupted vortex can weaken the jet stream, increasing the likelihood of cold spells in North America and Europe. While some anticipate a wet and stormy autumn, the timing and severity of any frost depend on how the vortex evolves.
Key facts
- The current El Niño is the strongest on record and may weaken the stratospheric polar vortex. (independent.co.uk)
- A weakened vortex could allow Arctic air to move south, potentially bringing freezing temperatures to the UK in autumn and winter. (independent.co.uk)
- Experts say it is too early to determine the exact impact on UK weather. (independent.co.uk)
Sources
- [1] independent.co.uk — originally reported as “What is polar vortex – and will El Niño peak affect the UK this autumn?”
