The Met Office has issued a weather warning for heavy thundery showers and the possibility of flooding across Derbyshire tomorrow.
The alert is in place from 10am until 8pm.
A spokesman for the Met Office said: "A warm, unstable air mass will affect the area, leading to heavy, slow moving showers and a risk of hail and thunderstorms. Rainfall of 20-30mm is likely locally, but could exceed 50mm."
