A G4 geomagnetic storm is considered "severe" and may have the following effects, as listed by the NOAA Space Weather Scales: Power systems: Possible widespread voltage control problems and some ...

"G4 storm conditions reached! We are still in the early part of the CME and the ongoing geomagnetic storm, more to come. 12 hours to go for Europe," aurora chaser Jure Atanackov wrote in a post on X .

The geomagnetic storm is expected to be a G4 class, according to the scale used by the U.S. National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center (SWPC).

Keep reading to learn when the G4 geomagnetic storm is expected to hit Earth, and where you need to be to get a glimpse at the magnificent auroras it will undoubtably produce.

A “severe” G4 geomagnetic storm could buffet the Earth from Friday evening, ... “G4 storms are relatively rare, with about 100 over the course of an 11-year solar cycle,” Rob Steenburgh, ...

A G4 (Severe) geomagnetic storm has reached Earth as of Friday morning. Graphic provided by NOAA. NOAA. The SWPC reports that geomagnetic storms are caused when the sun ejects plasma and parts of ...

Massive geomagnetic storm could make Northern Lights visible Thursday The storm was upgraded to a G4 classification Thursday afternoon By NBC Chicago Staff • Published October 10, 2024 ...

Only three “severe” geomagnetic storms have been observed since the current solar cycle began in Dec. 2019. The last G4 storm hit Earth in March, and the last G5 storm hit in Oct. 2003 ...

A "severe" G4 geomagnetic storm could make auroras visible across the country Thursday, according to forecasters with National Oceanic and Atmospheric Administration.Here's what we know about the ...

BOULDER, CO (WBNG) -- For the first time since 2005, a G4 geomagnetic storm watch has been issued by NOAA’s Space Weather Prediction Center. Geomagnetic storms are very common, these storms are ...

The last G4 (severe) was spotted on March 23, 2024, this triggered a geomagnetic storm alert. The last G5 (extreme) caused the Halloween storms in October 2003.