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What do the warning colours mean?
Red warning
- Dangerous weather is expected and, if you have not done so already, you should take action now to keep yourself and others safe from the impact of the severe weather.
- It is very likely that there will be a risk to life, with substantial disruption to travel, energy supplies and possibly widespread damage to property and infrastructure.
Amber warning
- There is an increased likelihood of impacts from severe weather, which could potentially disrupt your plans.
- This means there is the possibility of travel delays, road and rail closures, power cuts and the potential risk to life and property.
Yellow warning
- Yellow warnings can be issued for a range of weather situations.
- It is important to read the content of yellow warnings to determine which weather situation is being covered by the warning.
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UK weather warnings
Yellow warning
Fog
Warning Valid From: 18:00 Sun 8 UTC
Warning Valid To: 11:00 Today UTC
Fog leading to difficult travel conditions and possible delays.
What should I expect?
- Slower journey times with delays to bus and train services possible
- There is a chance of delays or cancellations to flights
What should I do?
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.
Further detail
Fog patches will form readily again during Sunday evening and overnight becoming extensive by Monday morning. Some dense patches of fog are expected with visibility down to around 50 metres or less in some places. Fog thinning slowly later on Monday morning.
Why is the warning yellow?
This warning has a high (50-75%) likelihood and a moderate impact.
Issued
Regions and local authorities affected:
East Midlands
East of England
London & South East England
North West England
South West England
Wales
West Midlands
Yorkshire & Humber
Yellow warning
Fog
Warning Valid From: 22:00 Sun 8 UTC
Warning Valid To: 10:00 Today UTC
Fog patches forming overnight and into Monday morning, may lead to disruption to travel
What should I expect?
- Slower journey times with delays to bus and train services possible
- There is a chance of delays or cancellations to flights
What should I do?
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.
Further detail
Areas of fog will continue to develop during tonight and into early Monday. Fog may be dense in places with visibility of less than 100 metres. Fog gradually lifting and clearing during Monday morning.
Why is the warning yellow?
This warning has a high (50-75%) likelihood and a moderate impact.
Issued
Regions and local authorities affected:
Northern Ireland
Warnings are in force for:
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