A massive solar eruption is headed toward Earth. It brings the potential for a rare and breathtaking aurora borealis display. This event could occur across much of the northern hemisphere. The National Oceanic and Atmospheric Administration (NOAA) has issued a G4 geomagnetic storm watch. It is one of the highest classifications. The storm is expected to reach Earth by midday on Thursday. This could allow the northern lights to be visible far beyond their usual locations.
NOAA Issues G4 Geomagnetic Storm Watch
NOAA has been monitoring a coronal mass ejection (CME) from the sun since Tuesday. This CME is set to interact with Earth’s magnetic field. This event could lead to disruptions in power grids, GPS signals, and satellite communications. Despite the potential risks, the event may also create a once-in-a-lifetime opportunity for aurora chasers.
NOAA’s Space Weather Prediction Center has issued the rare G4-level storm watch, marking the second such warning this year. Geomagnetic storms are categorized on a five-level scale, with G5 being the most severe. A G4 storm is just one step below the highest intensity.
The last G4 storm, which occurred in May, was the first of its kind since 2005. That storm caused minor disturbances to electrical grids. It also affected navigation systems. However, it resulted in stunning aurora borealis displays in regions where the northern lights are rarely seen.
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