The forecaster said disruption to power and transport was possible, with driving conditions affected by standing water and spray. The warning is in place from 1-9pm today, with heavy rain and thunder expected over much of East Anglia. A spokesman for the Met Office said: "There is a good chance driving conditions will be affected by spray, standing water and\/or hail, leading to longer journey times by car and bus. Delays to train services are possible. "Some short term loss of power and other services is likely. Some flooding of a few homes and businesses likely, leading to some damage to buildings or structures."