Fog meant visibility was bad and they couldn't find the hut and camped overnight in a cave.
The weather only got worst and in the early morning, unable to light a fire and having had no breakfast, they made a call to return to Putara Hut.
According to later reports they reached Mt Ruapae but took a wrong spur.
It was then the three young scouts separated from Mr Balfour who went looking for a way down.
That was the last time anyone saw Mr Balfour.
With young Andrew Larsen showing signs of exposure, darkness closing in and with no sign of their scout leader the three boys headed back along Dundas Ridge.
The boys bivouacked on the Friday night and then made their way out of the ranges along Harris Creek to Mangahao, near Shannon, emerging from the bush on the Sunday.
A major search for Mr Balfour was mounted but from the start ran into severe weather problems.
The ranges were being swept with hail showers, snow flurries and biting winds which made ground searches and air surveillance extremely difficult.
It was also ascertained Mr Balfour had no tent or primus stove, had only been carrying enough food for two days and had been suffering from cramp.
The searchers soldiered on until September 17 when the search for the hapless scoutmaster was officially called off.
Putara Hut later burned down and the Schorman Track is no longer used. Nowadays, trampers commonly access the northern Tararua tops from the east via Herepai Hut.