Essex Police have reported that around 16 homes in Colchester have been evacuated because of a burst water main causing serious flooding.
Road closures have been put in place at Southway, Maldon Road, Wellington Street, Balkerne Hill and Maldon Road. An emergency rest centre has been set up for residents who have been affected.
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The A47 Acle Straight in Norfolk is expected to be closed for "a number of hours" following a crash between a lorry and a car.
After a frosty start for many places, with bright or sunny spells, outbreaks of rain will gradually arrive although Norfolk may remain dry.
Further details have emerged over allegedly fatal delays at the East of England Ambulance service over Christmas.