The Polar Vortex in the upper atmosphere has disintegrated after the intense warming of the stratosphere in mid-March.

Overnight low temperatures in the upper 50s are normal for February, not April, but we may see them this weekend in South ...

Related Already stung by reduced crop estimate, Florida citrus industry now faces polar vortex California declares public health emergency as bird flu spreads in cows Tokyo struggling to deal with ...

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation ...

An April cold snap is expected to bring unusually cold temperatures to the eastern half of the US next week. The cold snap could impact new spring vegetation and lead to frost in some areas.

Don't put away those winter coats just yet. An April cold snap is forecast for much of the eastern half of the U.S. early next week, forecasters said, with freezes likely across portions of the ...

Warm conditions across much of Europe are forecast to give way to periods of unseasonably cool temperatures and stormy ...