Tarkastellaan maanantaina, 18. tammikuuta 2021 arkistoa

Valitse haluamasi arkistokohde

Coronal hole faces Earth, Sunspot region 2797

The northern hemisphere polar coronal hole which has an extension southwards has been facing Earth the past few days. A solar wind stream flowing from this coronal hole is expected to influence our planet in the coming three days. Geomagnetic conditions up to a maximum of Kp4 (active geomagnetic conditions) are possible starting today up till Wednesday (20 January). Solar wind speeds of well over 500km/s were observed last month when this same coronal hole faced our planet.

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