A severe geomagnetic storm could bring the northern lights and possible technological effects to the U.S. to start the week, NOAA’s Space Weather Prediction Center has warned. Story continues below On ...

April 1843: a small flotilla of ships are cruising along the coast of the Yucatán Peninsula, which has seceded from Mexico.

The aurora's are back! And may be visible throughout the weekend. The University of Alaska and NOAA track auroras using the Kp-index, a global auroral activity indicator which has ...

By Liz Kimbrough In the twilight depths of the Gulf of Mexico, about as deep down as a football field is long, U.S. Navy ...

Tropical Storm Alvin is expected to form in the Pacific Ocean on Wednesday. Here's a look at the storm's projected path and ...

Tropical Storm Alvin formed in the the eastern Pacific Ocean on Thursday, May 29, becoming the first named storm anywhere in ...

Here's the latest as Tropical Storm Alvin forms and forecasters watch tropical disturbances in the Atlantic and Caribbean.

The first tropical storm of the season is likely to form as early as Wednesday, but it's not our coast and not our season.