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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
Thunderstorm
08:00
Tomorrow
UTC+1
21:00
Tomorrow

While some places miss them, heavy rain and thunderstorms are likely again on Tuesday, potentially bringing disruption and flooding

What to Expect

  • Spray and sudden flooding could lead to difficult driving conditions and some road closures
  • Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
  • There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost
  • 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
  • There is a small chance of fast flowing or deep floodwater

What should I do?

Further Details

Areas of rain, perhaps heavy, are likely to develop quite early on Tuesday, probably breaking down into slow-moving heavy showers and thunderstorms during the late-morning and the afternoon. Showers and storms should ease into the evening. In some areas 20-30 mm could fall in just an hour or two, with the wettest spots perhaps seeing as much as 50-60 mm. Impacts might be more likely for any places that catch (or caught) Monday's downpours. Hail and lightning may be secondary hazards in places. What should I do? Consider if your location is at risk of flash flooding. If so, consider preparing a flood plan and an emergency flood kit. Prepare to protect your property and people from injury. Before gusty winds arrive, check to ensure moveable objects or temporary structures are well secured. Items include; bins, garden furniture, trampolines, tents, gazebos, sheds, and fences. 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. If you find yourself outside and hear thunder, protect yourself by finding a safe enclosed shelter (such as a car). Do not shelter under or near trees, or other structures which may be struck by lightning. If you are on an elevated area move to lower ground. 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.


Warning impact matrix

This warning has a very low likelihood and a medium impact.

Very
likely
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
to
Unlikely
Very low
impact
to High
impact

Regions and local authorities affected:

Northern Ireland

  • County Antrim
  • County Armagh
  • County Down
  • County Fermanagh
  • County Londonderry
  • County Tyrone
Yellow warning
Thunderstorm
12:00
Tomorrow
UTC+1
21:00
Tomorrow

Thunderstorms are likely to develop in places on Tuesday afternoon leading to some travel disruption and surface water flooding.

What to Expect

  • Spray and sudden flooding could lead to difficult driving conditions and some road closures
  • Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
  • There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost
  • 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

What should I do?

Further Details

Heavy showers and thunderstorms are expected to develop during the afternoon across parts of southwest England before slowly dying out during the evening. Many places will miss the worst, but where they do develop, some slow-moving and intense downpours are possible, giving accumulations of 20-30 mm in around 1 hour, and a lower likelihood of 40-50 mm in 2-3 hours in a few locations. Frequent lightning strikes and hail are also possible. What should I do? Consider if your location is at risk of flash flooding. If so, consider preparing a flood plan and an emergency flood kit. Prepare to protect your property and people from injury. Before gusty winds arrive, check to ensure moveable objects or temporary structures are well secured. Items include; bins, garden furniture, trampolines, tents, gazebos, sheds, and fences. 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. If you find yourself outside and hear thunder, protect yourself by finding a safe enclosed shelter (such as a car). Do not shelter under or near trees, or other structures which may be struck by lightning. If you are on an elevated area move to lower ground. 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.


Warning impact matrix

This warning has a very low likelihood and a medium impact.

Very
likely
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
to
Unlikely
Very low
impact
to High
impact

Regions and local authorities affected:

South West England

  • Cornwall
  • Devon
  • Dorset
  • Plymouth
  • Somerset
  • Torbay
Warnings are in force for:

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