The Met Office has issued a yellow alert for rain on Sunday January 26 in East Sussex,
It said a spell of wet and windy weather will cross the UK from the west during Sunday.
Heavy rain and strong winds are likely to affect many parts for a time, with further flooding anticipated, either as a result of surface water flooding or exacerbation of existing flooding issues.
The public should be aware of the potential for disruption.
Rainfall accumulations of 15 to 25 mm are expected quite widely, much of this falling in 6 to 9 hours.
Gales will be an additional hazard, with gusts of 50 to 60 mph in places.