A yellow weather warning has been issued for rain and thunderstorms for St Albans district, Welwyn Hatfield, north Herts and south Bedfordshire.
The Met Office has warned thunderstorms are expected to move into southern and eastern parts of England during Thursday morning, with further heavy showers and thunderstorms during the afternoon and evening.
There is the potential for 30-40mm of rain to fall in an hour and perhaps as much as 60-80mm in two to three hours.
Lightning and large hail stones are also possible.
If you have dramatic pictures of the weather, send them with some details of where and when the photo was taken to: • news@whtimes.co.uk for Welwyn Hatfield or Potters Bar
• hertsad@archant.co.uk for St Albans district or Radlett
• news@thecomet.net for Stevenage, Hitchin, Letchworth & Baldock, and Biggleswade, Sandy & Potton or the surrounding North Herts and Central Beds villages.
• news@royston-crow.co.uk for Royston or surrounding villages
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