"Sometimes you get conditions where the North Island fields are at a different rate than the southern fields. Right at the moment it's widespread across the country," he said.
He said it was still safe to ski in designated skifields where the avalanche risk was "actively managed".
But it was not safe to hunt, tramp or climb in the high-risk areas outside the managed skifields.
"If you haven't got the equipment of a shovel, an avalanche probe and a transceiver, as well as the training on how to use that equipment, then you shouldn't be going into the back country regions," he said.
Updated forecasts are online at: http://avalanche.net.nz/Forecasts/