The Met Office is telling people to "keep yourself safe", warning that "health effects are likely to be experienced by those vulnerable to extreme heat". The amber warning is in place from 9am until 11.59pm tomorrow, with the warning having a medium likelihood and a medium impact. "Keep yourself safe by following these simple steps to reduce the likelihood of the heat making you feel unwell," the Met Office said. "If you are going out take water with you, stay in the shade, wear sunscreen and a wide brimmed hat. "If using public transport, there are many simple things you can do to keep yourself safe.