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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
15:27
Wed 27
UTC
08:00
Today
Areas of fog on Wednesday evening will become more extensive overnight, resulting in difficult driving conditions.
What should I expect?
- Slower journey times with delays to bus and train services
- Delays to flights are likely, with the possibility of some cancellations too
What should I do?
Further detail
Wednesday's fog is expected to expand and become fairly widespread, with visibilities in some places falling below 100m. This will make for difficult driving conditions and may also lead to disruption of public transport. With temperatures close to, and in places below freezing, icy patches in freezing fog will be an additional hazard.
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.
Why is the warning yellow?
This warning has a high likelihood and a low impact.
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Issued
Regions and local authorities affected:
Northern Ireland
- County Antrim
- County Armagh
- County Down
- County Fermanagh
- County Londonderry
- County Tyrone
Yellow warning
Fog
00:15
Today
UTC
11:00
Today
Patchy fog will result in difficult driving conditions in places during Thursday morning.
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?
Further detail
Patches of fog will continue to form with the visibility in some places falling below 100 metres. With temperatures also below freezing, icy patches will be an additional hazard on untreated surfaces.
Fog will thin and clear from most places later in the morning.
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.
Why is the warning yellow?
This warning has a medium likelihood and a low impact.
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Last updated
Reason: Warning extended into more of south-east England and by an extra hour.
Regions and local authorities affected:
East Midlands
- Northamptonshire
London & South East England
- Bracknell Forest
- Buckinghamshire
- East Sussex
- Hampshire
- Oxfordshire
- Reading
- Slough
- Southampton
- Surrey
- West Berkshire
- West Sussex
- Windsor and Maidenhead
- Wokingham
North West England
- Blackburn with Darwen
- Blackpool
- Cheshire East
- Cheshire West and Chester
- Greater Manchester
- Halton
- Lancashire
- Merseyside
- Warrington
South West England
- Bath and North East Somerset
- Bristol
- Dorset
- Gloucestershire
- North Somerset
- Somerset
- South Gloucestershire
- Swindon
- Wiltshire
Wales
- Flintshire
- Monmouthshire
- Newport
- Wrexham
West Midlands
- Herefordshire
- Shropshire
- Staffordshire
- Stoke-on-Trent
- Telford and Wrekin
- Warwickshire
- West Midlands Conurbation
- Worcestershire
Warnings are in force for:
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