A poster who lives in Christchurch called Maria, sent these photos of what looks like man-made cloud-matter that were taken on the 5th of September between 17:34 and 17:36.
She wrote: “On 5 Sept. at around 5:35 pm I noticed some strange colours on the sky from my window in Beckenham. I took some pictures. I was alarmed because I had seen the videos people had posted before the earthquakes in China and Chile. I felt that another big one was on the way.
I do not know how long it takes but this morning (8th Sept) we had another big one. They said it was an aftershock, initially 6.1 but then they said 5.1. I do not believe them. It was definitely at least 6 and having so may aftershocks and my Greek experience, I know!
I think it was a new attack and I would welcome your opinions.
I also heard that in July they sent a new seismologist in Christchurch from the USA!”