Astronomical is based on the position of the sun in relation to the Earth ... the National Centers for Environmental Information. It's what most people think of when they talk about seasons.

The definition: An atmospheric river (AR) is a long plume of moisture that stretches from the tropics or subtropics into ...

Southern California is facing fierce fires fueled by the Santa Ana winds, which threaten homes and put firefighters to the ...

California has just experienced one of its worst wildfire seasons in years, despite the Golden State's ample resources to ...

Groundhog Day is Sunday, and just as he’s done for well over a century, Punxsutawney Phil will make his weather prediction at the crack of dawn. If the famous marmot sees his shadow when he emerges ...

As your snowmen contort into icy gargoyles, I’m sure you have many questions about what on earth you just experienced ... However, the National Weather Service has reports of up to 3.3 ...

The storm system is moving across the U.S. quickly, with freezing rain and sleet forecast to change over to all rain by Thursday afternoon, he says. And while upper parts of the country will see ...

Thousands of dry lightning strikes have sparked multiple bushfires, some within remote national parks and wilderness areas, ...

Related: Wild solar weather is causing satellites ... well as information on how many are currently in service, inactive or have burned up in Earth's atmosphere. Related: How to photograph ...

Lightning can be used to probe Earth’s dynamic Van Allen radiation belts, directly connecting terrestrial weather and space ...

According to recent observations, early signs of spring have already begun in the southern United States. In the Southeast, ...

Weather Advisory has been issued by the National Weather Service for Chicagoland, starting Wednesday evening and lasting overnight, ahead of a system that will bring a wintry mix of precipitation, ...