Yellow Fog Warning for England and Wales

The Met Office has issued a yellow weather warning for dense fog across large swathes of England and parts of Wales, effective from midnight on Wednesday, December 17, until 10 a.m. the following morning, with potential disruptions to road, rail, and air travel expected, particularly in the southeast and around major airports.

The alert covers regions including the East Midlands, East of England, London, the South East, South West, West Midlands, Yorkshire and the Humber, North West England, and Wales. Forecasters predict that fog patches will develop overnight from Tuesday into Wednesday, starting in the west and spreading eastward. Where dense fog forms, visibility could drop below 100 meters, creating hazardous conditions for drivers and slowing journey times. The fog is anticipated to clear gradually from the west after dawn, though it may persist until midmorning in eastern areas such as the East Midlands and southeast.

Travelers face the greatest risks near key transport hubs. Airports including Heathrow, Gatwick, Stansted, Luton, London City, and Southend could see flight delays or cancellations, especially as the busy pre-Christmas period approaches. Heathrow officials...