A forecast Watch has been issued. G1 (minor) geomagnetic storms are forecast to begin on 14 February, and G2 (moderate) Storms are forecast for 15 February. This activity is anticipated due to the combined effects of three coronal mass ejections (CMEs); two of which were associated with R1 (minor) solar flares from Region 1974. All three CMEs left the Sun separately at low to moderate speeds over the past 36 hours, and all had trajectories with at least a partial component moving towards the magnetosphere protecting Earth. It is the interaction between CMEs and Earth’s magnetosphere which can cause geomagnetic storms – as well as possibly producing fantastic auroras farther south than usual. Stay tuned for more details.
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