Met Office deputy chief forecaster Tony Waters said: "We are expecting spells of very heavy and thundery rain across a wide area of the UK in the next few days. Given the saturated ground from the record rainfall in June, this could cause significant disruption."
Already provisional Met Office figures show that double the average amount of rain fell across the UK last month, making it the wettest June since records began in 1910. England, Wales and Northern Ireland fared worse than Scotland.
Have you registered with us yet?
Register now to enjoy more articles and free email bulletinsSign up now