Like ocean waves, Rossby waves can "break" on top of the polar vortex, weakening it and — in extreme cases — reversing the direction of its winds. Last year, a sudden stratospheric warming event hit ...

When that happens, the polar vortex weakens or breaks apart, allowing cold Arctic air to spill into lower latitudes. That’s exactly what happened in early March 2025. A sharp burst of stratospheric ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March. Currently, its remains are traveling eastward across Canada to the United States.

Why has April in Chicago been cold so far? A big factor is the disruptions in the polar vortex, even as the “polar vortex ...

Devastating winter storms that led to deaths and power outages across the UK and Ireland were driven by an intense swirling vortex of winds miles above the Arctic, scientists have revealed. In ...

A significant disruption to the polar vortex over far Northern Canada will keep the pattern’s influence locked in our neck of ...

"The large polar vortex disruption from the second week of March is playing ... "we are going to get a much deserved break" from severe weather as a powerful cold front moves off the East Coast late ...

Scientists say a "swirling polar vortex" miles above the Earth caused three deadly storms in the UK and Ireland, which brought severe flooding and record wind speeds. Four people lost their lives ...

"The large polar vortex disruption from the second week of ... "we are going to get a much deserved break" from severe weather as a powerful cold front moves off the East Coast late Sunday and ...