Three helicopters and fire crews from as far as Horowhenua are battling a vegetation fire near Bulls.
The fire started at about 9:30am on Santoft Rd near the Knottingly Rd.
Police have blocked Santoft Rd from Knottingly Rd at one end and Lake Alice Rd at the other.
Conditions are dry and a strong Westerly wind is proving challenging for fire crews.
Smoke from the fire could be smelled in nearby Bulls.