It was cold across the eastern part of North America, but the opposite was true in other parts of the world.
Published Dec 6, 2018
While North Americans contended with a blast of Arctic air, Europeans found themselves wondering where winter went.
Published Jan 10, 2014
Blasts of Arctic air spilling into the Midwest and Northeast are poised to make New Year’s Eve frigid for many Americans.
Published Dec 29, 2017
The culprit is a familiar one: the polar vortex.
Published Jan 29, 2019
The Arctic Oscillation, La Niña, and North Atlantic Oscillation combine to steer winter's cold, snowy weather away from the United States.
Published Feb 8, 2012
Large waves in the atmosphere mean that a cold snap in one area is often accompanied by unusual warmth in another.
Published Jan 3, 2018
People in eastern North America shivered through February 2015, while those in the western part of the continent experienced unusually warm weather.
Published Mar 10, 2015
If you live in the northern hemisphere, the past few weeks have been strange. In places where it should be seasonably hot, it’s just warm. In places where weather is usually mild in the summer, it has been ridiculously hot.
Published Aug 8, 2014
Though the talk in much of the United States was about polar vortices and wicked cold snaps, the wider world was actually warmer than normal.
Published Mar 20, 2014
Winter turned fierce in the opening weeks of 2009, and part of the reason for the cold snaps and winter storms came from big changes in the atmosphere about 20 kilometers above the Earth.
Published Feb 7, 2009
This map of the land surface temperature shows that the first week of December was exceptionally cold in northern Europe and the eastern United States.
Published Dec 17, 2010
Land surface temperatures across Europe and Russia were far below the 2000–2008 average in mid-December 2009.
Published Dec 25, 2009
Circulation around a jet streak—a fast-moving pocket of air within the jet stream—formed this distinctive arc of clouds.
Published Dec 4, 2019
The bitter cold of winter settled ferociously over the interior of Asia during the first week of 2006.
Published Jan 14, 2006Image of the Day Heat Land Life Snow and Ice Temperature Extremes
In December 2013, the same kink in the jet stream brought frigid cold to the continental U.S. and record heat to Alaska.
Published Dec 14, 2013
In March 2013, the same meteorological phenomenon brought warm weather to the Arctic and cool air spilling into the North America, Europe, and Asia.
Published Apr 3, 2013
Ireland got a coating of snow and ice this week, the latest expression of an unusually early and brisk start to winter.
Published Dec 4, 2010
