Met Office issues thunderstorm weather warning for Northern Ireland

The Met Office has issued a weather warning for thunderstorms and heavy rain for Northern Ireland, with hail also forecast, according to advice published by nidirect on 30 August 2026¹. nidirect, the Northern Ireland government information service, said difficult driving conditions, flooding, lightning strikes and power cuts are possible¹.

nidirect stated that the Met Office has sent out the warning and that weather warnings let the public and emergency services know about potentially hazardous conditions¹. It listed the following numbers for use in an emergency¹:

The Flooding Incident Line is available 24 hours a day, every day, and can be used to report flooding problems on roads, burst water mains and blocked drains¹. nidirect said staff will take details and contact the appropriate agency on the caller's behalf, and that it is a non-emergency number, so anyone in danger should call the emergency services on 999¹. Fallen trees or blocked roads can be reported online or by phoning 0300 200 7899¹. Power cuts can be reported to the NIE Networks customer helpline, with latest information available through its Powercheck service¹.

nidirect advised people always to plan their journey and check the latest weather and travel advice, and to ask whether a journey can be delayed until conditions improve¹. It said not to travel in heavy rainstorms unless absolutely necessary, and that anyone who does travel should plan carefully and allow extra time¹. Drivers were told not to enter flood water that is moving or is more than four inches deep, and not to drive through fast-flowing water under any circumstances as the car could be swept away¹. nidirect also warned of hidden dangers under the water, such as missing manhole covers, and said people should not try to walk through flooded areas¹. Anyone stranded in flood water who feels there is a risk to life should dial 999¹.

Why it matters for households

The warning covers Northern Ireland and concerns thunderstorms, heavy rain and hail, with flooding, lightning strikes and power cuts possible¹. Households may lose electricity, and the NIE Networks helpline and Powercheck service are the routes nidirect gives for reporting a loss of supply and getting information¹. Where a home is flooded because of heavy rainfall, nidirect advised contacting the local council and asking about its emergency payments scheme¹.

On preparing for a flood, nidirect advised having sandbags, floodboards or plastic covers ready to block doorways and airbricks, knowing where to turn off electricity and gas, moving valuables to safety, checking that insurance covers flood damage, and keeping a list of useful numbers including the local council, emergency services and insurer¹. It said the risk of becoming ill after contact with flood water is generally low, but that because it is not always clear whether the water is contaminated, people should assume that it is and take precautions, including avoiding direct contact, not letting children play in flood water, using rubber gloves when cleaning up, washing hands, covering cuts and not eating food that has been in contact with flood water¹. It advised contacting a GP if a stomach upset develops after flooding¹.

The Met Office publishes advice on staying safe in thunder and lightning, and further detail on weather warnings is available on its website¹. Households can read more on how to sign up for Met Office weather alerts and on what yellow, amber and red warnings mean, with general guidance in the storms and snow hub and lightning safety advice.

What happens next

No end time or further update for the warning is given in the published advice¹. nidirect directed readers to TrafficwatchNI for road updates, Translink for bus and rail information, and local council websites for any effect on council services¹.