Severe geomagnetic storm watch issued for first time in nearly 20 years amid 'unusual' solar event

National Oceanic And Atmospheric Administration News

Severe geomagnetic storm watch issued for first time in nearly 20 years amid 'unusual' solar event
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For the first time since 2005, NOAA says an 'unusual event' has led to a severe G4 geomagnetic storm watch for Friday.

A severe G4 geomagnetic storm could emerge on Friday, triggering a watch for a storm of this magnitude from NOAA officials for the first time in nearly 20 years. The watch comes after days of solar activity that seemingly sent several explosions of plasma and magnetic fields toward Earth. G4s are the second-strongest form of geomagnetic storms and are known to potentially cause widespread voltage control problems.

There has also been a series of coronal mass ejections , which are explosions of plasma and magnetic fields that come out of the sun's corona, the outermost part of the sun's atmosphere. At least five CMEs appear directed toward Earth and could arrive as early as midday on Friday and persist through Sunday, the agency said. 'This is an unusual event,' NOAA said.

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