North Wales imminent thunderstorm and flood warning

Thunderstorm yellow alert (Tuesday July 9 2024)
-Credit: (Image: Met Office)

A thunderstorm warning has been issued for North Wales. It comes into force at 2pm this afternoon and lasts until midnight tonight. The yellow alert covers Wrexham, Flintshire, Denbighshire, Conwy and Gwynedd, with heavy rain also forecast in parts.

People have been warned to expect possible flooding, potential building damage from lightning strikes and travel disruption from the bad weather.

A Met Office forecast said: "Heavy showers and thunderstorms are likely to break out this afternoon and move northwards, slowly dying out during the evening and first part of the night.

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"Many places will miss these, but where they do occur, there is the chance of some localised impacts from heavy rain, as well as damage from lightning strikes. 10-20 mm of rain is possible in an hour or so, with some places potentially seeing 30 mm in a few hours."

The Met Office urged people to avoid delays by checking road conditions if driving, or bus and train timetables; and prepare for power cuts with torches, batteries and mobile phone power packs.

"If you find yourself outside and hear thunder, protect yourself by finding a safe enclosed shelter (such as a car). Do not shelter under or near trees, or other structures which may be struck by lightning. If you are on an elevated area move to lower ground," a Met Office spokesperson said.

Here is the weather forecast for Wales:


Damp with spells of rain and drizzle. Perhaps turning a little brighter in the afternoon but remaining fairly cloudy. Feeling a little warmer but also humid. Maximum temperature 20 °C.


A fairly cloudy evening, then a chance of heavy showers overnight. Largely dry by morning. Breezy to start, winds generally easing though remaining fairly breezy around northern coasts. Mild. Minimum temperature 12 °C.


A cloudy start but brightening up during the afternoon. A risk of showers through the day and turning breezy once again. Feeling pleasant in the sunshine. Maximum temperature 21 °C.

Outlook for Thursday to Saturday:

Largely dry though the occasional shower possible on Friday and Saturday. Lighter winds and temperatures improving so feeling pleasant in brighter spells.

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