Expect slow-moving showers and thunderstorms to develop on Sunday afternoon. Rainfall amounts will vary within the warning area, with the potential for 20-30 mm of rain to fall in an hour or less where showers consolidate. There could also be frequent lightning and hail, especially in the eastern part of the area.
To prepare for the possible flash flooding, determine if your location is at risk and develop a flood plan along with an emergency flood kit. Secure moveable objects and temporary structures, such as bins, garden furniture, trampolines, tents, gazebos, sheds, and fences before gusty winds arrive.
Stay informed about road conditions, bus and train schedules, and adjust travel plans as needed to avoid delays. Be ready for power outages by gathering torches, batteries, a mobile phone power pack, and other essential items in advance.
If caught outside during a thunderstorm, seek shelter in a safe, enclosed place like a car, avoiding trees or other structures that may attract lightning strikes. Move to lower ground if you are on an elevated area. Stay alert for rapidly changing weather warnings and stay updated with the weather forecast in your area as recommended by the Met Office.