Extreme weather is sweeping across the United States. Last week, the polar vortex peaked, bringing freezing temperatures to ...

The annual explosion of cherry blossoms along the Tidal Basin frames the Washington Monument in the distance, Thursday, April ...

March marks the start of meteorological spring and all of its weather complications. After D.C.'s relatively cold and snowy ...

We predict cherry blossoms will reach peak bloom about five days early.

Organizers of Monday’s protests, which were focused on state capitals and major cities including Washington, D.C.; Orlando, ...

Scientists say it’s being caused by a misbehaving polar vortex combining with a key weather pattern that seems to be stuck in place. Some scientists say these factors and this winter could be ...

The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a normal pattern that is stronger in the winter and keeps some of the ...

The polar vortex is a persistent area of low pressure dozens of miles above the earth's poles (both northern and southern). Because the vortex is so high up in the atmosphere, and because it's ...

The purpose is to see if the cold spell that send much of the U.S. shivering was due to the "polar vortex." NOAA concluded that there wasn't sufficient evidence to link this most recent cold blast ...

Everyone 14 and older in the U.S. illegally must register, give fingerprints and provide an address, the Department of ...

After almost three consecutive weeks of below-zero temperatures, North Dakota is now seeing "unseasonably warm weather," ...