(NEXSTAR) — 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.

Early Sunday morning, G4 geomagnetic storm conditions had been reached. Such strong conditions have been known to bring the northern lights as far south as Alabama and northern California.

Tropical Storm Alvin 2025 maps, models The National Hurricane Center has released this map, showing where the tropical formation is located several hundred miles off the coast of southern Mexico.

“Yesterday was the first significant storm that we’ve had here in Southern California the entire winter,” Alex Tardy from National Weather Service San Diego said.

Areas charred by last month's wildfires in Southern California now face a new threat from a powerful, but fast-moving Pacific storm. Here's what you need to know about this threat.

The strongest storm in a year is set to pound Southern California this week, with forecasters warning of potential widespread roadway flooding and the chance of landslides throughout the region ...

Record-breaking rain lashes California, with two people killed during storm in Sonoma County A pedestrian crosses the street by the 6th Street Viaduct in Los Angeles on Wednesday.

An incoming winter storm is the first of several snow-laden storms expected to hit California up until Christmas.