Crews from Fire and Emergency are responding to a fire in a forestry block near Picton Airport, Koromiko.
Three helicopters are fighting the fire south of Picton.
Fire and Emergency has confirmed a blaze in a hilly, pinetree plantation at Korimako, near the Picton airport.
Spokesperson, Lyn Crosson, said on arrival, the fire covered 100m by 30m.
She said four fire crews from the surrounding area were fighting it, as well as helicopters.