A weather warning for thunderstorms, covering all of Norfolk, has been issued. The Met Office yellow alert stretches from 12pm until midnight on Thursday. It covers most of England, and experts are warning of heavy rain and lightning. A Met Office spokesman said: “Spray and sudden flooding could lead to difficult driving conditions and some road closures. “Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services. “There is also a slight chance that power cuts could occur and other services to some homes and businesses could be lost…