Update #81,291 on the weakening atmosphere... These geomagnetic storms are nothing more than coronal holes and solar wind. Not from flares.
We should NEVER hit kp4 from a coronal hole, much less kp6.
Just crazy...
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As you can see, no flares of any kind...
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If your emp / solar flare preps aren't in order, I'd get them in order with a target date of no later than next spring. As solar cycle 25 increases, we're almost certain to have x-class flares impact the earth at some point. In spite of the fact that cycle 25 is going to be weak, even weak cycles throw occasional x-class flares.