Flood risk yellow warning for Wales as heavy rain due
Torrential rain is expected across much of Wales before the end of Thursday prompting the Met Office to issue a localised flooding "be aware" warning.
Downpours overnight are expected ease by the morning but torrential rain is set to sweep in from the south with up to 50mm (2in) of rain in a few hours.
The yellow warning for rain and thunder is in place until midnight on Thursday.
Natural Resources Wales (NRW) says drains, ditches and small streams may be unable to cope with the run off.
It is warning drivers that conditions may be hazardous the road and it is also urging people to be alert for flooding.
The rain and thunder will affect all areas of Wales but the south of the country is expected to be worst hit.
A yellow warning is the lowest level of severe weather warning issued, and asks members of the public to "be prepared" for adverse weather.
The Met Office warning for the whole of Wales was issued at 6pm on Wednesday.
It warns that "heavy, thundery, rain will spread from the south during Wednesday evening and Thursday, with the potential for some torrential downpours in places".
A Met Office spokesman said: "Wales is in the firing line for some very heavy rain in the next 24 hours. It looks the south will be worst affected by the downpours.'Hazardous'
"Drains blocked by leaves and small streams may be unable to cope with the torrential rain. There is a risk of flooding.
"Despite the heavy rain, it will still feel mild and muggy, with temperatures above average at 17C to 20C."
NRW said: "People travelling to and from work are advised to take extra care as driving conditions may be hazardous.
"People should also avoid walking or driving through any flood waters as they could become trapped or swept away."
The Met Office said its yellow warning will be kept under review, with the possibility that it may need to be extended into Friday.