Flash flooding has hit several areas of south Wales, with the situation in one town described as “serious”.
Firefighters said they were extremely busy with multiple 999 calls, including in Cardiff, near Newport and in Port Talbot.
South Wales Police said Talbot Road in Port Talbot was closed in both directions after and thunderstorm rolled through the area on Friday night.
Drains were overwhelmed in Whitchurch, Cardiff earlier, where Merthyr Road was submerged after a torrential downpour.
Gwent Police said officers were dealing with surface water issues on the A449 Newport to Usk trunk route.
There have been dozens of lightning strikes across south Wales between Chepstow and Gower.
A Met Office yellow weather warning for heavy thundery rain is in force until 02:00 BST on Saturday.
Forecasters warned that up to 7cm (2.75in) of rain could fall in just a few hours.
The storms are expected to clear westwards overnight.
