Flood alerts return for counties hit by major flooding
Six flood alerts have been issued across Wales, including for areas hit by severe flooding earlier this month.
Alerts are in place on rivers such as the Mawddach and the Dysynni in Gwynedd, the Rheidol in Ceredigion, and parts of the Teifi in Carmarthenshire.
Meanwhile, up to 70mm (3in) of rain is expected in Snowdonia.
The forecourt of a petrol station at Llandre near Bow Street, Ceredigion, was pumped out by Mid and West Wales Fire Service on Thursday night.
A fallen tree closed the B4340 between Aberystwyth and nearby New Cross.
End Quote Sue Charles BBC Wales weather forecaster
There are concerns about localised flooding, because of the cumulative effect of this rain falling on saturated ground and into swollen rivers”
Diversions are in place between Southgate, Aberystwyth, and Trawsgoed bridge.
Extreme localised flooding caused devastating floods in parts of mid and north Wales earlier in June.
Intermittent heavy rain over the past three days has left many rivers running unseasonably high.
A Met Office heavy rain warning remains in place for north and west Wales.
There were three flood alerts in place earlier on Friday, but Environment Agency Wales increased the number to six later in the day.
Its flood alerts include areas around the River Dyfi, from Dinas Mawddwy and Llanbrynmair to the estuary, including Machynlleth.
There are also alerts for areas around the rivers Mawddach and Wnion, from Fairbourne to Ganllwyd and Rhydymain and for areas around the river Dysynni from Tywyn to Minffordd.
The agency said there was also a flood alert on the upper Towy catchment, upstream of Llandeilo but excluding the Bran at Llandovery.
The upper Teifi catchment, upstream of Llanybydder including Llanybydder, is also on alert.
Rivers in north Ceredigion including the Clarach, Rheidol and Ystwyth are also affected.'Cumulative effect'
BBC Wales weather presenter Sue Charles said: "We're experiencing heavy rain on and off for the best part of three days.
"There are concerns about localised flooding, because of the cumulative effect of this rain falling on saturated ground and into swollen rivers, particularly through parts of Ceredigion and Gwynedd."
This month has seen floods in parts of mid and north Wales.
Aberystwyth and nearby villages such as Talybont, Dol-y-Bont and Llandre were badly affected, while parts of Ceredigion were hit by 5ft (1.5m) of flood water.
Some families say they may be out of their homes for up to nine months while the damage is repaired.
Environment Agency Wales has urged people to keep up to date with the latest flooding information, through news broadcasts, its dedicated Floodline on 0845 988 1188 or through its website.