The agency expects a minor or greater geomagnetic storm—a disturbance of Earth’s magnetic field—on Saturday, which increases ...

A La Niña winter just started, but it isn't expected to last long. National forecasters are already looking ahead to the ...

The aurora borealis is back and is expected to be visible in more than 10 states. See which states will have the best views.

Another display of the northern lights could be visible this weekend in several U.S. states following a severe solar storm.

The arctic blast is expected to affect millions of people across the United States with brisk winds, and dangerously cold ...