The Met Office has issued a yellow weather warning for further heavy rain in Cambridgeshire, Essex, Norfolk, Suffolk and Lincolnshire.
The warning is in force from noon on Sunday 13 July until 7pm
The Met Office says: "Heavy showers and isolated thunderstorms are likely to develop across some eastern parts of England during Sunday afternoon.
"The public should be aware that localised downpours could lead to temporary surface water flooding, such impacts perhaps most likely where heavy thundery showers have occurred during the previous 24 hours."
The Chief Forecaster's assessment: "Rain will clear from the east this morning, but as the cloud thins and breaks to allow some sunshine, so heavy showers and isolated thunderstorms are likely to develop for the afternoon.
"Some of the showers may be slow-moving with the potential for a few places to see around 20 mm of rain within an hour. Showers should die out more rapidly this evening than on Saturday evening."