Thundersnow – a thunderstorm that produces snow instead of rain – is sometimes reported during winter storms. Made famous by Weather Channel meteorologist Jim Cantore, whose excitement at ...

Swap out the rain, and replace it with snow, and you have what the National Oceanic and Atmospheric Administration (NOAA) describes as the “rare weather phenomenon” known as thundersnow.

“Thundersnow” rolled into the GTA Friday night with a winter storm that was expected to dump up to 30 centimetres of heavy, wet snow on the city by Saturday morning. Thundersnow is a rare ...