Nor'wester

The north-westerly wind, commonly known as the ‘nor’wester’ brings up to 12 metres of precipitation annually to New Zealand’s Southern Alps. The short documentary on the bottom left (somewhat dated but still accurate) explains how the wind shapes and is in turn shaped by the land, and ultimately creates Canterbury’s braided rivers.

The video at right shows the effects of a nor’wester along the upper reaches of the Rangitata River