This week will feature the most impactful weather we have had in months. A strong line of potentially severe thunderstorms roll through Sunday afternoon, bringing the coldest air of the season that doesn’t relent through the rest of the upcoming week.

The storm will usher in frigid temperatures and spread heavy snow and ice across a 2,000-mile stretch of the country.

Sunday is a First Warning Impact Day because of heavy soaking rain and the chance of some ice accumulation in northern Alabama.

The US Atlantic Coast is currently grappling with a severe winter storm that has led to widespread power outages and grounded thousands of flights.

The sudden blast may come as a shock to many Americans after a mostly mild start to winter, but that warmth may be partly contributing to the ferocity of this storm.

Add Yahoo as a preferred source to see more of our stories on Google. A pair of storms sweeping from Texas to the Great Lakes over the weekend could bring travel problems due to snow, flooding rain and severe weather and threaten lives and property.

Earth's magnetic field was struck by a "severe" solar storm Monday (Jan. 19), triggering vibrant auroras in the U.S. and large parts of Europe. The storm broke a record that had stood for more than two decades.

Earth just experienced a rare S4 solar radiation storm, the most intense since 2003 — powerful for satellites and astronauts, but harmless on the ground.