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Negative polarity CH HSS sparks G2 – Moderate geomagnetic storm

Negative polarity CH HSS sparks G2 – Moderate geomagnetic storm

detected-coronal-holes-march-13-2018.jpg

A persistent negative polarity coronal hole high speed stream (CH HSS) sparked G2 – Moderate geomagnetic storm on March 18, 2018. A gradual return to background levels is expected on March 19 as CH HSS influence subsides. However, enhanced solar wind parameters are…… Read more »

 
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Source: Negative polarity CH HSS sparks G2 – Moderate geomagnetic storm