Expect heavy showers and thunderstorms to develop in the southern and western areas early Sunday afternoon, moving northwards and intensifying into larger areas of heavy rain before clearing by late evening. Some areas may experience intense downpours, with the 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. There is also a risk of large hail, frequent lightning strikes, and strong wind gusts in localized areas.
To prepare for the severe weather, assess whether your location is at risk of flash flooding and consider creating a flood plan and emergency kit. Secure moveable objects and temporary structures like bins, garden furniture, and tents before gusty winds arrive. Check road conditions and public transport schedules, and make necessary adjustments to your travel plans to avoid potential delays. Gather essential items such as torches, batteries, and a mobile phone power pack to cope with power cuts in advance.
If caught outside during a thunderstorm, seek shelter in a safe enclosed area like a car, avoiding trees and other structures that may attract lightning strikes. Stay informed about changing weather warnings, as conditions can evolve rapidly. Stay updated with the latest weather forecasts from the Met Office for your area.