The Met Office has issued a yellow weather warning for the risk of heavy rain on Bank Holiday Monday.
The warning has now been extended to cover all of the Anglia region.
The Met Office Chief Forecaster says: "Rainfall amounts are likely to exceed 15 mm quite widely, while a few places could see more than 30 mm.."
The warning is valid from 6.00am on Monday 25 August 2014 until 11.50pm.
"Heavy rain will spread from the southwest on Bank Holiday Monday. A complex area of low pressure will bring an unpleasant day's weather to much of England and Wales on Monday. The public should be aware that there may be some impacts to holiday traffic and outdoor activities."
It will be a fine and bright start to the day but it will turn cloudy from the west with outbreaks of rain arriving during the afternoon.
More funnel clouds have been spotted spinning down from thunderstorm clouds across the Anglia region as the June summer soaking continues.
Daily torrential downpours have given the Anglia region its wettest week since the autumn of 2015.