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

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 ...

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

"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 ...

"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 ...

When the polar vortex begins to wobble and allows arctic ... though the area still has yet to break any daily high or low records this year. Feeling out of the loop? We'll catch you up on the ...

over the Arctic. When these winds weaken, as has been happening recently, filaments of the vortex can break off, and meander south into the U.S., Europe and parts of Asia. Last month, parts of the ...