Numerous aerosol trails were seen over Northland on August the 18th, a day prior to heavy rain. This first photo was taken at about 2pm from Woodhill, Whangarei. I was looking in a southerly direction. The second image shows the aerosol cross englarged. As has been reported before, this region is not a main jet traffic route – far from it.
The third image was taken by Toni Anne Smith from Hikurangi, which is north of Whangarei and shows aerosol trails sprayed in parallel.