Expect heavy showers and thunderstorms to develop in the southern and western parts of the area on Sunday afternoon, gradually moving north and expanding into larger areas of heavy rain before clearing by late evening. There is a possibility of intense downpours in some areas, with potential for up to 30 mm of rain in less than an hour and possibly 50 mm over 2 to 3 hours, leading to surface water flooding. Localised hazards may include large hail, frequent lightning strikes, and strong wind gusts.
To stay safe, assess if your location is prone to flash flooding and consider creating a flood plan and emergency flood kit. Secure moveable objects and temporary structures such as bins, garden furniture, trampolines, tents, gazebos, sheds, and fences to prevent damage before strong winds arrive. Check road conditions, bus and train timetables, and amend travel plans if needed to avoid delays. Prepare for power cuts by gathering essential items like torches, batteries, a mobile phone power pack, and other necessities.
If caught outside during a thunderstorm, seek shelter in a safe enclosed area like a car. Avoid standing near trees or structures that could attract lightning strikes. Move to lower ground if you are in an elevated area. Stay updated on weather warnings as they may change rapidly. The Met Office advises keeping abreast of weather forecasts for your specific area.