Firefighters across Wales are launching "Project Wildfire" to help tackle deliberate grass and mountain fires.
Firefighters were called to a street in Swansea yesterday after a grass fire spread across two properties.
There was a rise in grass fires this weekend as temperatures increased across Wales.
North Wales Fire and Rescue are tackling three separate mountain fires on the edge of Snowdonia. Appliances from Llanberis, Bangor and Menai Bridge are trying to bring the fire at Moel y Ci, near Bethesda under control.
Fire engines from Caernarfon and Porthmadog have also been dealing with a gorse fire at Ceunant, near Caernarfon. An area of around 100 square metres of gorse and bracken has also caught fire at Rachub in Gwynedd. North Wales fire service had already dealt with 52 similar fires since last Thursday.
Welsh fire services say they have been called out to hundreds of grass fires since the beginning of the recent dry spell. They are warning people to take extra care as the weather is forecast to remain dry.
- South Wales Fire and Rescue - 102 fires since Sunday
- Mid and West Wales Fire and Rescue - 340 calls to fires since Saturday
- North Wales Fire and Rescue - 52 fires since Thursday
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30 firefighters were called to a property in Ystalyfera, near Swansea, at 1710 hrs yesterday evening after a grass fire spread to two properties.
The fire in Woodmans Terrace is said to have severely damaged a single storey property as well as a detached two storey building. No one was injured.
30 firefighters were called to a property in Woodmans Terrace, Ystalyfera near Swansea after a grass fire spread to a house and garage.
Mid and West Wales fire service feared there were gas canisters stored in the garage and the electricity board was called to cut off the power supply to the street.
Fire services are continuing to tackle grass fires across Wales. This one broke out in the village of Cwm-y-Glo, four miles east of Caernarfon. Crews have received hundreds of calls over the last 24 hours.
A blaze has broken out on the mountain overlooking Treorchy. Fire services are at the scene, reports Rob Osborne.
Earlier today, firefighters tackled a fire across eight hectares on the Bryn Arw mountain near Abergavenny.