Thunder + lightning + snow = thundersnow. It’s not an equation, but it did all add up for the South Island on Wednesday afternoon when the rare weather event struck. MetService duty forecaster Heath Gullery​ said it was unusual to get snow and thunderstorms at the same time. MetService Lightning strikes as the polar blast hit the South Island. Snow down to 200m is expected in Wellington overnight on Wednesday, and showers and southerly winds will strengthen in the evening.

Source: Stuff October 05, 2022 08:24 UTC