Why Aurora Substorms Matter More Than the 3-Hour Kp Average (September 2026)
I have stood in frozen fields at 2 AM, staring at an empty sky while my aurora app proudly displayed Kp 5. I have also watched the most spectacular aurora display of my life when the same app showed Kp 2. After years of chasing the northern lights across Iceland, Norway, and Canada, I learned … Read more