Earth’s Magnetic Field just Struggled with a Weak CME: Sign of the Times
May 14, 2021 Cap Allon
On May 12, a weak Coronal Mass Ejection (CME) released from the Sun hit Earth. The event was supposed to pass by uneventfully — it would perhaps spark a few auroras, but nothing more. So how did a strong G3 geomagnetic storm ensue?
Nobody was expecting a level 3 event from this CME.
Nobody saw the KP Index hitting 7.
[spaceweathernews.com]
And when I say nobody, I mean nobody predicted this: not NASA, NOAA, ESA or IPS in Australia.
The CME’s speed peaked at just 500 km/s (purple line below).
This is a little stronger than your standard solar wind, but weak in terms of a Coronal Mass Ejection.
https://electroverse.net/earths-magnetic-field-just-struggled-with-a-weak-cme/
