Some areas may remain dry, but heavy rain and thunderstorms are expected to develop from mid-morning. In the southern part of the warning area, there is a possibility of slow-moving heavy showers and thunderstorms with hail and lightning, which should gradually ease by Tuesday evening. In the northern part of the warning area, early showers may turn into heavy and thundery rain persisting into Wednesday. There is a risk of 20-30mm of rain in 1 hour, with some areas possibly receiving 40-50mm in 2-3 hours.
To prepare, consider the risk of flash flooding and create a flood plan. Secure moveable objects and temporary structures like bins, garden furniture, and sheds before gusty winds arrive. Check road conditions and transport timetables for any necessary amendments to travel plans. Gather essentials like torches, batteries, and a mobile phone power pack in case of power cuts. Seek shelter in a safe enclosed space during thunderstorms and avoid trees or structures that can be struck by lightning. Keep updated on weather warnings as they can change quickly.