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Wales Online
Wales Online
National
Jillian MacMath

The weekend weather where you live in Wales as yellow thunderstorm warnings continue

After days of volatile weather across Wales, the Met Office is predicting more thunderstorm action into the weekend.

Storms ignited over the country again on Wednesday, lighting up skies from Wrexham to Cardiff.

While they brought a welcome cooldown to much of the UK overnight, building warmth will cause them to fire up again in time for the weekend.

The Met Office has issued a further two yellow weather warnings for the whole of the country into Monday.

Lightning over Caerphilly Castle during a storm on August 12, 2020 (Steven Gronow)

The first warning for thunderstorms comes into effect at midnight on Friday and lasts until 6am on Saturday.

According to the Met Office: "Areas of showers and thunderstorms associated with a hot and humid air mass stranded across the southern half of the UK are expected to continue through Friday, and not solely during daylight hours."

While many areas included in the warning will miss out on the thunderstorms altogether, where they do fire up, heavy rain, frequent lightning, and large hail are possible.

Yellow weather warnings will cover Wales for much of the weekend (Met Office)

Downpours could yield as much a three-quarters of an inch of rain in the span of an hour, and up to nearly two inches in a two to three hour period.

According to forecasters, the greatest chance for impactful showers is expected to be in the southern half of the warning area, where afternoon storm systems are more likely to be slow moving and prolonged.

Homes and businesses could flood quickly in these conditions, and public transport is likely to face delays and cancellations.

Drivers should prepare for difficult conditions and the possibility of road closures.

Power cuts and disruption to other services is also expected.

Lightning over Barry (Dan Zetterstrom)

Anyone hoping to get outside this weekend will find the best opportunity on Saturday, when there is expected to be a break in the thunderstorm activity.

However, the window of opportunity will be short, with a second thunderstorm warning already in place from midnight on Sunday until 9pm on Monday.

Areas of heavy showers and thunderstorms are expected to develop on Sunday, with some persisting into the late evening, according to the Met office.

A similar situation will play out on Monday, though the thunderstorms will be more likely to clear earlier in the evening.

Anyone heading outdoors or commuting to work will want to bring a brolly as a further 1.5 inches of rain is possible in hardest hit areas. Hail, lightning and gusty winds are also in the offing.

Here's what to expect where you live:

Cardiff

Cardiff weather forecast (Met Office)

Swansea

Swansea weather forecast (Met Office)

Newport

Newport weather forecast (Met Office)

Tenby

Tenby weather forecast (Met Office)

Aberporth

Aberporth weather forecast (Met Office)

Aberystwyth

Aberystwyth weather forecast (Met Office)

Porthmadog

Porthmadog weather forecast (Met Office)

Rhyl

Rhyl weather forecast (Met Office)

Builth Wells

Builth Wells weather forecast (Met Office)
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