"Thundersnow can be found where there is relatively strong instability and abundant moisture above the surface," says the NSSL.

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

With severe cold hitting much of the country, some unusual phenomena like "exploding trees" could be on the way. Here's what ...

No, it's not an earthquake. The winter phenomenon is a seismic event caused by a sudden cracking in frozen soil or rock saturated with water or ice.

Did you notice the stunning, colorful sight in the sky Monday morning? It wasn’t a rainbow. It’s called a sundog, a weather ...

Australia is experiencing a smorgasbord of wild weather in the lead-up to Christmas, featuring extreme heat, humidity, severe thunderstorms, and tropical storms all on the cards. The locality of ...

Texas is no stranger to a good thunderstorm. But lightning and thunderclaps mixed with sleet? That's a rarity.

A rare winter phenomenon was captured on camera during the winter storm Sunday ...

The city is facing a weather phenomenon 'rarely seen in the UK' at the weekend which will top off a snowy week ...