Jedolby

  Aurora on October 10, 2024 Last night was the second night in 2024 when an aurora reached as far south as Tucson, Arizona. At least, as far as I know. The first one, last May, caught me by surprise. I had seen some nice sunspot groups and I know that solar flares and coronal mass ejections (CMEs) can give beautiful auroral displays in the far north. A few days later, I got a notification on my phone from, of all places, the MyRadar app. It said, "Aurora visible now!" I was skeptical that we'd see anything this far south. But I went outside to look anyway. As I expected, I didn't see anything unusual in the evening sky. Then my daughter used her iPhone to take a picture and there it was! Spectacular red color and vertical bands! Astonishing!  Tonight's aurora was a wee bit more visible to the unaided eye than that one. But it was still much better and plainly obvious in pictures. And MyRadar hadn't said a word. My sister in Pennsylvania alerted me to the auro...