Heavy fog sparks UK travel warnings and flight disruption

Thick fog settling over large swathes of the United Kingdom has prompted yellow weather warnings and is causing disruption across road, rail and air networks, with forecasters highlighting the risk of slower journeys, reduced visibility and delays to flights on Monday 9 November 2026.

Yellow fog warnings stretch across England and eastern Wales

Publicly available information from the Met Office shows a yellow fog warning in force from the evening of Monday 9 November until late Tuesday morning, covering much of central, eastern and south east England, together with parts of eastern Wales. The warning area runs from North Wales and the Midlands through to East Anglia and the Thames Valley, taking in cities such as Birmingham, Manchester on the southern fringe of the zone, Oxford and Norwich.

The alert, issued on Monday morning, indicates a high likelihood of moderate impacts, with visibility expected to fall below 100 metres in many locations and down to around 50 metres in the worst-affected spots. The warning notes that dense fog is redeveloping after dusk and may persist into the morning commute before gradually thinning through late morning as temperatures rise.

According to the Met Office guidance, yellow warnings signal that transport services are at risk of disruption, though not on the scale associated with amber or red alerts. For this event, official material highlights the potential for slower road journeys, local delays to bus and train services and an increased chance of flight delays or cancellations where visibility on approach and departure is severely restricted.

Satellite imagery and surface observations collated by weather services show extensive low cloud and fog trapped under a temperature inversion, with light winds preventing the fog from dispersing quickly. This pattern is described in meteorological commentary as an ideal set-up for prolonged fog episodes that can significantly affect everyday travel.

Airports report delays as low visibility affects flight schedules

Major airports in southern and central England have experienced disruption as the fog bank has thickened. Coverage from UK news outlets indicates that London Heathrow saw a number of arrivals subject to low-visibility procedures on Monday morning, with some services held or diverted while conditions fluctuated. Reports also point to delays at London City and other airports in the warning zone as air traffic controllers reduced landing rates to maintain safety margins in the fog.

Live flight data referenced in media coverage suggests that more than one in ten flights at some UK airports were running late during the busiest morning period, with a small number of cancellations where aircraft or crews were out of position. One outlet cited figures indicating around 14 percent of scheduled services affected at a regional airport, highlighting how relatively modest visibility reductions can quickly ripple through tightly timed schedules.

Airlines have been updating online departure boards and apps throughout the day, advising passengers to check the latest status of their flights before travelling to the airport. Airport travel advice reviewed for this report stresses that flight times may change at short notice when low-visibility operations are in force, as spacing between aircraft on approach and departure is increased and crews must meet additional operating criteria.

Operational plans published by UK airports for adverse weather, including fog, underline that safety margins take precedence when visibility drops below specified thresholds on runways and taxiways. These documents explain that even where modern landing systems are in place, not all aircraft and crews are certified for the lowest visibility categories, which can lead to selective delays and diversions during dense fog events.

Commuters face slower road and rail journeys

Commuters travelling by road on Monday morning encountered difficult driving conditions in parts of eastern Wales, the Midlands, East Anglia and the South East. Travel bulletins cited by national broadcasters reported significantly reduced speeds on motorways and key A-roads, with drivers urged to allow additional time, use appropriate lights and maintain greater distances in thick fog patches.

Information shared by national and regional traffic agencies indicates that visibility at times dropped below 50 metres on exposed routes, particularly on higher ground and in river valleys. While no widespread motorway closures were reported by early afternoon, there were local collisions and breakdowns linked to poor visibility and damp road surfaces, which compounded congestion at peak times.

On the rail network, train operators serving London and the Midlands reported minor delays on some early services, primarily where speed restrictions were introduced in foggy sections. According to updated service information, most routes continued to run but with warnings of potential knock-on effects as the day progressed if fog lingered longer than forecast or redeveloped in the evening.

Bus operators in towns and cities within the warning area also signalled possible disruption. Public-facing updates noted that services might run late where drivers needed to reduce speed in thick fog, particularly on inter-urban routes and rural stretches into commuter hubs.

Weekend incidents highlight safety risks in dense fog

The latest disruption follows a weekend of hazardous conditions in parts of southern England and eastern Wales. Coverage in national newspapers describes several serious incidents linked to the fog, including a multi-vehicle collision that closed a major route in Kent on Saturday evening after visibility deteriorated rapidly.

Reports indicate that emergency responders dealt with a series of minor collisions and stranded vehicles as dense fog patches formed overnight into Sunday. While traffic levels are typically lower at weekends, the combination of poor visibility, damp surfaces and occasional icy spots in rural areas contributed to challenging conditions for drivers returning from evening events or early-morning shifts.

Weather summaries compiled by broadcasters and online outlets note that fog also disrupted travel around several regional airports over the weekend, with some flights delayed, diverted or cancelled. This earlier disruption set the stage for Monday’s problems, as aircraft and crews were left out of position and knock-on effects carried into the working week.

Meteorological assessments referenced across broadcast and print coverage suggest that the current fog episode ranks among the more significant for the 2026 autumn season so far, both in terms of geographical spread and the duration of reduced visibility in key population centres across England and Wales.

What travellers need to know in the coming 24 hours

With yellow warnings extending into Tuesday morning, travel information services are advising passengers and motorists to plan ahead. For air travel, airline and airport channels reviewed on Monday recommend checking flight status repeatedly before departure and being prepared for gate changes, longer queues and possible rebooking if conditions fail to improve when expected.

Regular commuters by rail and coach are being encouraged, through operator updates, to allow extra time for journeys, particularly on early-morning services while the fog remains dense. For those travelling by car, official road safety campaigns referenced in media coverage stress the importance of using dipped headlights and rear fog lights where visibility is severely reduced, while avoiding full-beam lights that can reflect off the fog and further obscure the view.

Met Office guidance notes that fog can clear very unevenly, lifting quickly in some corridors while remaining stubborn in valleys and urban basins. This means conditions may vary significantly over short distances, and travellers are being urged to stay alert to rapidly changing visibility on longer journeys.

Forecasts issued on Monday afternoon indicate that the worst of the fog-related disruption should ease later on Tuesday 10 November as a change in air mass and slightly stronger winds help to disperse the low cloud. However, forecasters and transport providers are continuing to monitor developments, and additional advisories remain possible if dense patches reform overnight or if the warning area is updated.