"A lot of stuff was closed down. The street I ran down, I just saw on tv, a crane collapsed," Mr O'Connor told the Greymouth Star by phone this morning.
But he said things were not yet too bad, and he had seen heavier rain on the West Coast.
Mr O'Connor was meant to catch a train tomorrow to Washington to meet with Fonterra and trade representatives, but again that had been cancelled. He still hopes to be back in New Zealand later this week.
Power remained on this morning, and Mr O'Connor had stocked up on provisions.
"There has been a rush on the mini markets, which are all around the city."
Mr O'Connor said he was "not panicking yet but working on a plan to get out".