Firefighters are tackling a blaze in around a hundred tons of wood in Newport.
They were called out to a building site at Llanwern shortly after nine last night.
There are no reports of any injuries.
Update Llanwern: crews and the mechanical digger remain at site currently
Update Llanwern: Approx 300 tonne of wooden debris rubber matting and tyres involved 3 jets now extinguished, fire deliberately started
More than twenty firefighters tackled a blaze last night at a block of flats in Cardiff.
It started in a derelict flat in the five storey building at Braunton Crescent in Llanrumney at around 18.30pm.
There are no reports of injuries.
South Wales Fire and Rescue Service have sent firefighters to several flooding incidents to help deal with the bad weather.
Firefighters are currently in attendance in the Cathays area of Cardiff and Mill Parade and Commercial Road in Newport.
Update International food market Newport: crews using 2 ejector pumps to remove Approx 1m of water from the stock room
Update Mill Parade Newport: Crews are using 2 light portable pumps and the water is now starting to recede. council gully sucker also in use
An elderly woman has died at a house fire in Pontllanfraith. South Wales Fire and Rescue service says it received a call around 2pm yesterday afternoon having received a report of a fire in the living room of a house on Commercial St. Investigations into the cause will start today.
South Wales Fire and Rescue Service says that a tyre fire in Ystrad Mynach has now been extinguished - and that firefighters believe it was deliberately started.
Update Ystrad Mynach: Fire is now extinguished and the cause determined as deliberate
The large amount of smoke caused by a fire in Dyffryn Business Park has caused Police to close the northbound carriageway between Caerphilly and Ystrad Mynach.
People who live near the area are being advised to keep their windows and doors closed as fire crews try to tackle the blaze.
South Wales Fire and Rescue Service has been called to a large fire at Dyffryn Business Park in Ystrad Mynach.
The fire involving tyres is creating large amounts of smoke in the area, causing Police to close the northbound carriageway from Caerphilly to Ystrad Mynach.
Update Ystrad Mynach: The fire which is creating large amounts of smoke in the area is involving quantity of tyres which has spread to cars
Update Ystrad Mynach: due to large volumes of smoke from the fire the Police closed Northbound Carriageway from Caerphilly to Ystrad Mynach
Update Ystrad Mynach:fire involving 1industrial skip 2motor vehicles 1large caravan+quantity of tyres attempting to stop spread to building
There are reports of multiple crashes on the roads of south Wales this afternoon. Among them, incidents on the A449 and A40.
Update Trelewis: Flooding outside homes due to blocked culvert, crews currently pumping water and requesting sandbags from Local Authority
Treharris crew are enroute to assess flooding reported to 3 homes in Bontnewydd Terrace Trelewis 08:17
South Wales Fire and Rescue Service are currently dealing with three homes that are flooded in Bontnewydd Terrace in Trelewis.
Fire crews are currently pumping water and have requested sandbags from the local authority.
The fire burning at the Vale Business Park in Llandow is now out.
It began on November 26. A spokesperson for South Wales Fire & Rescue Service says efforts to tackle the blaze were hampered by the construction of the building - a former aircraft hangar built to withstand bombardment.