The speedy solar storm arrived in style, sparking stunning aurora displays as far south as California and New Mexico.

A violent solar eruption on May 31 launched a coronal mass ejection (CME) hurtling toward Earth, triggering a rare G4-level geomagnetic storm alert. Captured in real-time by U.S. Naval Research ...

Northern lights may once again be visible deep into mid latitudes tonight as geomagnetic storm conditions continue to wreak havoc with Earth's magnetic field.

Another day another massive solar storm headed our way, all as the Sun approaches the peak of its 11-year-solar cycle. This is the result of the Sun releasing a coronal mass ejection, sending a ...

Solar Storm Hits ‘Severe’ G4 Level The International Civil Aviation Organization reported severe impacts on high-frequency radio communications at high latitudes, potentially impacting long ...

At a G4, this one is just a single level away from being the most severe solar storm possible, according to NOAA. Storm watches at the G4 level don't come along very often: The last one issued by ...

A "severe" G4 geomagnetic storm is forecast across October 10 and 11 as the plume of solar plasma—known as a coronal mass ejection, or CME—arrives at the Earth.

Conditions in a G4 solar storm can be strong enough to disrupt GPS and satellite systems, or electrical systems on the ground. Any risks to ground systems can be mitigated, NOAA said.

A strong solar storm is currently impacting Earth. The event, triggered by a major solar flare, may cause widespread auroras. Satellite and GPS interference are possible. Power grid instability is ...

Colorful auroras could be visible in many northern states Wednesday due to a severe solar storm. The National Weather Service's Space Weather Prediction Center upgraded the storm to G4 level ...