It has been very dry in Northland since the beginning of 2013. The map below is from the Northland Regional Council site and depicts the rainfall figures for January 2013, which as indicated, have been exceptionally low. View more Rainfall Maps for Northland.
According to NIWA there were record dry conditions in a number of regions in NZ in January 2013, with less than 10mm of rain falling across Auckland, Hamilton and Tauranga.
It has also been uncharacteristically dry in February 2013 in Northland. What is apparent is that rain clouds are still forming over the region, but it appears that as a result of stratospheric aerosol geoengineering, very little rain is falling. The following photos depict this happening. These were taken throughout February the 12th, 2013 and show what appear to be rain clouds over Whangarei. It was cloudy for most of the day and aerosols were visible behind the clouds, as a number of the photos show.
At about 7pm rain fell, however it amounted to very little. I took the last photo shown after the rain had finished falling over Woodhill, Whangarei. As can be seen, the rain was not substantial, it merely dampened the surface.