The Met Office has issued a weather warning for intense downpours across Lincolnshire later this week, along the possibility of thunderstorms and even hail.
Forecasters have said that heavy rain will move north through England and Wales in the early hours of Wednesday morning.
Severe storms may break out again in the afternoon.
Many places will miss the thunderstorms, but those affected could see some localised flooding of homes and roads.
Power networks could also be disrupted by lightning and hail could be an additional hazard.
The warning is in place from just after midnight until 10pm.