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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
Rain
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Thundery rain may lead to some travel disruption and flooding in places across southern England and south Wales on Friday evening and night

What should I expect?

  • There is a slight chance of power cuts and loss of other services to some homes and businesses
  • There is a small chance that homes and businesses could be flooded, causing damage to some buildings
  • Where flooding occurs, there is a slight chance of delays or cancellations to train and bus services
  • Spray and flooding could lead to difficult driving conditions and some road closures
  • There is a slight chance of damage from lightning strikes
  • There is a small chance that some communities will become cut off by flooded roads
  • There is a small chance of fast flowing or deep floodwater causing danger to life

What should I do?

Further detail

Whilst rain has largely eased across the warning area during early Friday afternoon, a spell of heavy and thundery rain is expected to redevelop on Friday evening. A further 10-20 mm of rain is expected to fall quite widely across the area, but there there is a chance a few places could see 50-70 mm of rain in 3-6 hours; these higher accumulations more likely across south Wales mid-late evening. Whilst thundery rain will clear westwards overnight, there is the potential for further spells of heavy rain across parts of southern UK over the weekend. What should I do? Check if your property could be at risk of flooding. If so, consider preparing a flood plan and an emergency flood kit. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. Be prepared for weather warnings to change quickly: 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 very low likelihood and a medium impact.

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Last updated

Reason: Warning has been removed from a large part of southeast England where any further heavy showers and thunderstorms are unlikely to cause impacts. The focus for further impacts are expected to be across southwest England and particularly south Wales where the warning has been extended until the early hours of Saturday morning.

Regions and local authorities affected:

London & South East England

  • Hampshire
  • Oxfordshire
  • West Berkshire

South West England

  • Bath and North East Somerset
  • Bristol
  • Devon
  • Gloucestershire
  • North Somerset
  • Somerset
  • South Gloucestershire
  • Swindon
  • Wiltshire

Wales

  • Blaenau Gwent
  • Bridgend
  • Caerphilly
  • Cardiff
  • Carmarthenshire
  • Ceredigion
  • Merthyr Tydfil
  • Monmouthshire
  • Neath Port Talbot
  • Newport
  • Pembrokeshire
  • Powys
  • Rhondda Cynon Taf
  • Swansea
  • Torfaen
  • Vale of Glamorgan

West Midlands

  • Herefordshire
Warnings are in force for:

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