There are warnings of life-threatening floods in place along the east coast of Britain as heavy rain, high winds and snow batter the UK.
The Environment Agency has upped its warning as local police forces get ready to evacuate thousands of residents from Essex to Skegness on the Lincolnshire coast.
Yesterday, Scotland and the north of England were covered in a blanket of snow - and this same weather pattern is likely to create a storm surge around lunchtime today (Friday).
Communities and towns along the coasts of Lincolnshire, Norfolk, Suffolk and Essex have been told to prepare for large waves and possible flooding, while emergency services were putting together evacuation plans as a last resort.
The Environment Agency's chief executive, Sir James Bevan, appeared on the BBC to warn of "potentially significant effects".
He told BBC Radio 4's Today programme: "It's important to note there are two high tides today coming down the east coast, north to south.
"The first is coming in slightly under the height we expected, the second - expected this evening - may come out slightly higher than anticipated. And so we will stay very active throughout the day on the ground, we will continue to warn and inform the communities that are at risk.
" I would like to urge everybody to remain vigilant and to continue to follow our flood warnings."