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UK weather warnings
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Yellow weather warning
Warning details for UK
Heavy showers, torrential downpours and thunderstorms may cause travel disruption and some flooding.
What to expect
- There is a small chance that homes and businesses could be flooded quickly, with damage to some buildings from floodwater, lightning strikes, hail or strong winds
- Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
- Spray and sudden flooding could lead to difficult driving conditions and some road closures
- There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost
Heavy showers already affecting the south and east of the Isle of Wight will become more widespread across the warning area through the afternoon, with some thunderstorms also developing. These may be quite slow-moving and last for an hour or two. Some torrential downpours are possible with a few places seeing 50 mm of rain or more within a few hours. Lightning and hail are also additional hazards.
Warning impact matrix
Regions and local authorities affected:
- Bracknell Forest
- Brighton and Hove
- Greater London
- Isle of Wight
- West Berkshire
- West Sussex
- Windsor and Maidenhead
- Bath and North East Somerset
- Bournemouth Christchurch and Poole
- North Somerset
- South Gloucestershire
- Blaenau Gwent
- Merthyr Tydfil
- Rhondda Cynon Taf
- Vale of Glamorgan
What do the warning colours mean?
- 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.
- 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 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.