Watches/Warnings/Advisories

Thunderstorm warning   South West England (UK115)Valid: 15/08/2022 10:00  -  23:59
./ajax-images/meteoalarm_3.svg Hit-and-miss thunderstorms likely to develop through Monday, producing some torrential downpours for some spots, and possible disruption.

Already some showers to start the day, but these likely to become more widespread and heavier through the late morning and afternoon, lasting into the evening in places. Some counties are likely to miss the worst of these storms but where they do occur, slow-moving torrential downpours could produce 20-30 mm inside an hour, with 40-50 mm falling in around 2-3 hours in a few spots. Hail and frequent lightning could pose additional hazards for some. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

What to expect: Spray and sudden flooding could lead to difficult driving conditions and some road closures; 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; There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost.
 
Thunderstorm warning   South West England (UK115)Valid: 16/08/2022 00:00  -  23:59
./ajax-images/meteoalarm_3.svg While some places stay dry, others are likely to see thunderstorms with torrential rain bringing some disruption.: UPDATED

Information on update: Warning updated from a very low likelihood to a low likelihood warning. Thunderstorms and areas of heavy rain will develop quite widely across much of England and Wales. The extent of these thunderstorms will be more widespread than on Monday, though some spots will still miss storms and remain dry.

20-30 mm of rain is possible within an hour, but where areas of thundery rain become slow-moving, some places could see 50 mm in less than three hours. There is a chance that higher totals could occur in a few spots over the course of the day. Hail and frequent lightning are likely additional hazards for some places. There remains some uncertainty at this stage in regional and county level focus. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

What to expect: Flooding of homes and businesses could happen quickly, with damage to some buildings from floodwater, lightning strikes, hail or strong winds; Fast flowing or deep floodwater is possible, causing a danger to life; 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; Some communities might become cut off if roads flood; Power cuts might occur and other services to some homes and businesses could be lost.
 
Thunderstorm warning   South West England (UK115)Valid: 17/08/2022 09:00  -  23:59
./ajax-images/meteoalarm_3.svg While some places stay dry, others are likely to see thunderstorms with torrential rain during Wednesday, bringing possible disruption.

Whilst some places will miss them, thunderstorms and areas of heavy rain will develop quite widely on Wednesday across the southern England.

20-30 mm of rain is possible within an hour, but where areas of thundery rain become slow-moving, some places could see 60 mm in less than three hours. A few spots could see more rainfall than this still, whilst hail and lightning may be additional hazards. . For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

What to expect: Spray and sudden flooding could lead to difficult driving conditions and some road closures; 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 slight chance that power cuts could occur and other services to some homes and businesses could be lost; There is a small chance that some communities become cut off by flooded roads; Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services; There is a small chance of fast flowing or deep floodwater causing danger to life.
 

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