Thunderstorm risk starts to increase

[Updated 07:40 10/08/2020]

Distant storms. Posted by toppiker60

The heatwave continues in southern areas today but changes are beginning to take place. The risk of thunderstorms is increasing with areas to the west of London most likely to catch one today as they move northwards. Through tonight and tomorrow storms are possible in much of the UK. They will be hit and miss but there is the potential for flash flooding and disruption.

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Distant storms. Posted by toppiker60 View the full size picture.

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Monday starts dry in most of the UK but there scattered showers. This morning they become heavier and more  widespread in central and western England and Wales. Some will be heavy and thundery with downpours in places. This afternoon it may become drier in the south west but the risk of thunderstorms spreads into Northern Ireland. Other parts of the UK have sunny periods and a lower risk of catching a thunderstorm. 

Temperatures range from 19C (66F) in the far north west to 34C (93F) in the south east and East Anglia. See the rain and lightning radar for the latest view.

Arpege forecast chart 1

Meteo France Arpege, rain, 16:00 BST Mon 10th August

Tonight thunderstorms affect much of the UK. They will be hit and miss with parts of eastern Britain most likely to avoid  them. Very muggy and warm in the south with temperatures in places not falling below 21C (70F).

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Tomorrow thunderstorms continue in much of the country. There will be sunny periods too, particularly in central and eastern England. It remains very hot in the south east.

Arpege forecast chart 2

Meteo France Arpege, rain, 16:00 BST Tue 11th August

Heat easing later this week

During Wednesday and Thursday the risk of thunderstorms continues in much of the country. There will be sunny periods too and in the south east it stays very hot. By Thursday temperatures should be starting to ease, although 30C (86F) could still be reached in the south east and East Anglia. 

The rest of the week is likely to bring a mixture of heavy showers and sunny spells. Temperatures will be lower than recently, especially in the south, but in sunny spells it will still feel very warm.  

GFS chart 1

GFS, surface pressure and precipitation, 16:00 BST Thu 13th August

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