Drone footage from South Wales Fire and Rescue service shows the spread of the blazeFirefighters tackling a forest blaze in Rhondda Cynon Taf have declared a 'major incident' and have warned people to avoid the area and not to fly drones. South Wales Fire and Rescue service (SWFRS) is responding to the wildfire in the Blaenllechau and Ferndale area. The fire service has declared the blaze a 'major incident' after changing wind conditions has meant an increase in their resources on the ground. "We have declared it a major incident as requires a greater demand on our resource and as such more coordination. Advertisement AdvertisementAdvertisement AdvertisementNatural Resources Wales (NRW) manage land affected by the fire.