The Met Office has issued a yellow weather warning for St Albans due to the torrential rain, thunder and lightning.
The weather warning is in place between 2am today (Tuesday, May 29) and 6am tomorrow (Wednesday, May 30). The spells of rain and thunder are expected to be particularly heavy this evening and tonight.
According to the Met Office, there is a chance that homes and businesses could be flooded or struck by lightning, causing damage to buildings.
Where flooding occurs, there is also a chance of delays to trains and bus services, as well as difficult driving conditions and some road closures.
There is a also a chance that flooding or lightning strikes could cause power cuts.
Residents are advised to drive carefully and use dipped headlights if visibility is reduced.
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