Severe weather alerts have been issued for parts of Northern Ireland, south west and southern England, Wales and Scotland as "persistent and heavy" rain brings the risk of localised flooding.
Areas of higher ground in Northern Ireland could see up to 70mm fall tomorrow and Friday, the Met Office said. It follows heavy rain throughout Northern Ireland yesterday. Last month homes were flooded in many parts of Belfast after more bad weather.
Meteorologists said people should be aware of the risk of localised flooding in the areas covered by warnings, which are in effect over different periods until the weekend.
The downpours could also be accompanied by "strong and gusty" winds, the Met Office said.
"The rainfall is likely to cause some minor flooding from either surface water or from rivers."
Met Office forecaster Nicki Willis said: "We are looking at unsettled weather over the next few days.