Maybe this is why.
THE RADIATION STORM IS SUBSIDING: Yesterday's solar radiation storm is subsiding. It is now a minor S1-class event, which poses no threat to astronauts or air travelers. Only Earth's polar regions are feeling a lingering effect of the storm. Shortwave radio transmissions inside the Arctic and Antarctic Circles are still being absorbed. Solar flare alerts: SMS Text
GEOMAGNETIC STORM WATCH (G1): A coronal mass ejection (CME) might graze Earth this week. It left the sun yesterday following a strong solar flare (M6.8-class) from departing sunspot AR3559.
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