Issued by the Met Office at 08:12 on Thursday, 22nd July 2010
Isolated torrential downpours could give more than 20 mm of rain in one hour locally, with overall totals perhaps exceeding 50 mm.
The public are advised to take extra care and refer to the Highways Agency for further advice on traffic disruption on motorways and trunk roads.
Valid from 10:15 on Thursday, 22nd July 2010 until 21:00 on Thursday, 22nd July 2010