ATC supervisors only became aware of the deteriorating conditions at about 2330Z
So why at least are the ATC supervisors not aware that the weather at one of the airports in their area of responsibility has gone bad? They don't tune in to the AWIS. Surely they don't just wait for amended TAFs to land on their desks? What is the point of SPECIs being issued to ATC if no one takes any notice of them? Does anybody actually carry the "big picture"?
It's 2016, and we have to wait for old mate in his airport ute to put two and two together and phone ATC about the weather?
20 years ago, this incident would never have happened. Ain't progress grand!