Much of it will boil down to what the polar vortex does, and how its shape and intensity evolve to affect the weather in ...

Butler wrote in NOAA's polar vortex blog. Historical records show that SSW events are more likely to occur during El Niño or ...

The intense cold snap about to settle over most of Canada and the U.S. has been dubbed a “polar vortex’, but Environment ...

For example, during the CP (Central Pacific) La Niña phase, reduced stratospheric ozone weakens vertical heat fluxes, stabilizing the polar vortex (PV ... looks at teleconnections around the world ...

Evanston residents should brace for the coldest weather of the year next week, with temperatures dipping below zero for days ...

A natural weather event known as El Niño has begun in the Pacific Ocean, likely adding heat to a planet already warming under climate change. US scientists confirmed that El Niño had started.

Ongoing emissions of warming gases in addition to the El Niño weather event are driving the heat, experts believe. Some scientists said they were shocked by the scale of the increase. They say ...

Minot residents have been experiencing temperature whiplash with relatively warm temperatures dropping precipitously below ...

These cold weather snaps featuring arctic air leaving its usual polar confines can be the result of a weakening of the polar vortex ... climate phenomenon, the El Niño/Southern Oscillation ...

For example, during the CP (Central Pacific) La Niña phase, reduced stratospheric ozone weakens vertical heat fluxes, stabilizing the polar vortex (PV ... the world from El Niño/La Niña ...