Warning: Yellow

To expect: Fog

Affected areas: East of England

Start time estimate: Wednesday 6am

End time estimate: Wednesday 10am

The Met Office has issued a Yellow fog alert for East of England until Wednesday morning.

A Yellow weather warning is in effect on Wednesday, starting from around 6am and continuing until 10am. Forecasters expect thick fog to significantly reduce visibility in the affected region.

The Yellow alert for fog was issued at 4:35am on Wednesday, March 4.

A Met Office forecast said: “Areas of fog are expected to reduce visibility in places this morning, with a chance of some dense patches reducing visibility to 100m or below. Visibility is likely to be quite variable across this region, with low cloud sitting on modest hills perhaps responsible for the worst visibility. Fog and low cloud should gradually lift during the morning, with visibility steadily improving by mid-morning.”

What to expect

Slower journey times with delays to bus and train services possible; Sudden variations in visibility may make driving difficult in places.

What should you do in dense fog conditions?

Give yourself the best chance of avoiding delays by checking road conditions if driving, leaving extra journey time, or amending plans if necessary. Make sure you know how to switch on your fog lights, and check they are working before setting off on your journey. Bus and train services, as well as flights and ferry travel may also be affected; check for updates from your travel company and follow their advice. Be prepared for weather warnings to change: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area. For further details see Met Office Warnings & Advice.

What is a yellow weather warning?

The Met Office has three categories of weather warning, depending on the likely impact of severe weather and also how likely it is to strike in a particular area.

A yellow warning is issued when weather conditions are expected to disrupt travel and traffic and may impact on daily routines but are not likely to pose a risk to life or property.

An amber warning is more severe and advises people to think about changing their plans to minimise the risk.

A red warning means weather conditions are expected to be dangerous with widespread damage to property and a risk to life, with the public usually advised to avoid travelling.

The Yellow weather alert for fog will remain in place until 10am on Wednesday.