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.
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.