Then there was the example of why some always choose to carry that bit extra. Back in the mid 71 there was a F28 Skipper that was renowned for always putting on an extra 1000lb for Mum and the kids. Well one night/early morning the F28 was northbound for Broome and the fog that was forecast indeed turned up forcing a diversion to Derby. Well would you believe that the (unforecast) fog rolled in at Derby not long after he diverted and it was unsuitable for a landing. His only option then was to Fitzroy Crossing so he headed off there at around 3am. The manual phone exchange there was night switched to the hospital and the FSO at Derby tried a number of times to get thru. It was answered by a staff member at last and the problem was passed on with the result that a small team headed out to the airport and gathered the flares and started to lay them. They laid one side of the runway and the F28 made its first approach only to find they were lined up on the wrong side of the single flare path which caused a go-round. The second approach was successful only to find as the story goes that one engine stopped due lack of fuel at the end of the landing run. Thank goodness for that extra bit of fuel.
There was a thread on this incident back in 2011 and can be found here:
Forty years ago today ...
A Google search will also bring up some various reports.
I was in Derby for two years about that time and never saw fog once!!