Ian in Tauranga kindly sent us these photos and wrote:
Friday 6th Aug 11.30am. The trail lies W to E across the suburbs of Matua and Otumoetai….or possibly a bit further out along the coast line. These suburbs are to the West of the main downtown area. Nice fine day with little wind but lots of large wispy, unusual clouds. The pics join up to cover the length of the trail. The 1st pic is the left-hand-side. Ten minutes later they had widened a bit and appeared to have disappeared half-an-hour later. I don’t know how long it had been there before I saw it.