Yellow fog warning in force for London as visibility falls below 100 metres

The Met Office has issued a yellow warning for fog across Greater London and south-east England, in force until 11 a.m. on Saturday (November 7). Londoners woke to unusually thick fog this morning, with visibility falling below 100 metres in some places; bus and rail journeys may take longer, and flights could be delayed or cancelled.

Warning in force since 9 p.m. Friday

According to the Met Office, clearing skies over south-east England on Friday evening led to mist and, in places, dense fog; the warning began at 9 p.m. on Friday (November 6) and was still in force when updated at 4:20 a.m. on Saturday. The fog is expected to lift gradually into mist and haze during Saturday morning, persisting longest where visibility is poorest early on, with fog possibly returning in the evening.

Limited disruption; airports running normally for now

The Met Office warned of slower journey times and possible delays to bus and train services, with a chance of flight delays or cancellations; but at the time of writing, schedules at Heathrow and Gatwick airports appeared to be running as normal, all but one London Underground line was in operation, and the Overground had planned part closures. National Rail urged weekend travellers to check their journeys before setting off, and the AA advised drivers to reduce speed and use fog lights correctly.

(Sources: Met Office, London Buzz, BritBrief.)