When the Fire Service called John Weatherley and told him there was a problem at home he thought his house must have burned down.

A wall of thunderstorms the length of New Zealand is about to hit, bringing heavy rain, thunderstorms, strong winds and even snow.

About 100 properties remain without electricity after a weekend storm that lifted roofs, felled trees and left one teenager dead.

Weather analyst Philip Duncan on the recent storm, and why the severe gales never really blasted Auckland.