THUNDERSTORMS are expected to hit the region at the end of the week.
A yellow weather warning for thunderstorms has been issued for the region on Friday.
The latest update says the storms could now continue until Saturday.
MORE - Heavy rain warning for North Wales today
Storms are expected to hit North Wales and Mid Wales, as well as parts of Shropshire and Cheshire, from 10am on Friday, the Met Office says.
The warning has been extended until 9am on Saturday, saying that "slow moving thundery downpours may cause localised surface water impacts".
A spokesperson for the Met Office said: "Heavy showers are expected across much of the UK on Friday.
"Within the warning area these showers and thunderstorms will be slow moving and may cause localised surface water impacts.
"Rainfall totals will vary considerably and not all locations will be affected by the heaviest showers.
"However, where the showers do occur there is potential for 20-30mm of rain in a short space of time and during the course of the day there is a chance that some places could see as much as 80-100mm build up."
What to expect:
- There is a small chance that homes and businesses could be flooded quickly, with damage to some buildings from floodwater.
- Spray and sudden flooding could lead to difficult driving conditions and some road closures
- Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
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