A convoluted jet stream plunged Europe into a severe cold snap in late January and early February 2012.
Published Feb 10, 2012
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
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
Much of the Northern Hemisphere experienced cold land surface temperatures in December 2009, but the Arctic was exceptionally warm.
Published Jan 9, 2010
A few weeks before the arrival of winter, some areas of Canada and the western United States were doused with cold rain and snow.
Published Nov 19, 2015
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
While North Americans contended with a blast of Arctic air, Europeans found themselves wondering where winter went.
Published Jan 10, 2014
The culprit is a familiar one: the polar vortex.
Published Jan 29, 2019
What a difference one year has made in the snow cover over North America.
Published Mar 30, 2012
A potent weather system with origins in Manitoba moved south across the Great Lakes on Halloween and blew all the way to Florida, bringing snow and hard frost to regions that don't see either in some winters.
Published Nov 4, 2014
Acquired January 7, 2010, this image shows snow blanketing England, from the east to west coast. The cities of Manchester, Birmingham, and London appear as ghostly gray shapes on the icy surface.
Published Jan 8, 2010Image of the Day Land Severe Storms Human Presence Snow and Ice
Winter is loosening its grip on the Northern Hemisphere, but the seasonal change in Northern Europe is less dramatic than most years.
Published Mar 23, 2020Image of the Day Atmosphere Land Drought Fires Snow and Ice Temperature Extremes
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
Snow cover across North America in April 2010 was the lowest since records began in 1967.
Published May 27, 2010
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
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
