Weather warning issued for heavy rain, thunderstorms and lightning in Flintshire

Forecasters are warning of heavy rain and thunderstorms from the early hours of Wednesday morning.

A yellow weather warning has been issued by the Met Office for Flintshire the wider north Wales and north west regions.

“More extensive thunderstorms may then break out over a larger part of England and Wales from late Wednesday afternoon onwards into Wednesday night, leading to torrential downpours, frequent lightning and a chance of hail” the Met Office says.

The warning comes into force at 3am on Wednesday until 6am on Thursday.

Chief Forecaster’s assessment

Rain over northern England early on Wednesday may locally lead to 20 mm or 30 mm of rain falling in one or two hours.

Thunderstorms developing from late Wednesday afternoon bring a greater threat of severe weather with associated torrential downpours giving as much as 30 mm or even possibly 40 mm in an hour in places.

The threat of heavy rain and thunder is initially confined to parts of northern England before the threat of severe weather becomes more extensive late Wednesday.