Winter weather advisories and winter storm warnings were issued across parts of the country on Monday amid heavy snow.

The National Weather Service has issued winter storm or winter weather warnings to six states, including California and Hawaii.

Under cloudy skies, the Regent Seven Seas Explorer anchored off Prince of Wales Island. The ship had spent the past few days navigating the Alexander Archipelago, with its pine forests, dramatic ...

The polar vortex is a huge area of cold air high up in the atmosphere that usually spins over the North Pole. Its position ...

A powerful burst of solar energy is setting the stage for an aurora lights show across parts of the U.S. tonight. Here's how, when and where to watch this stellar event ...

Elevated geomagnetic activity could allow the northern lights to be seen farther south than usual tonight, according to NOAA.

The Alaska Department of Fish and Game (ADF&G) is forecasting both a strong pink salmon harvest and a strong chum salmon ...

Every day for the past week, data has been hinting at a cold shot and then a warm-up. In the last couple of days the warm-up has trended warmer and longer lasting. The warm-up will come with a storm ...

We break down the longest cold snap to hit southern Ontario in more than a decade. See how current freezing streaks in cities ...