Solar Flare Browser

Solar flares are large (10-100 time the size of Earth) magnetic explosions on the Sun’s surface. They are categorized by their size. C-class is 10 times as powerful as B-class, M-class is 10x the size of C-class and X-class is 10 times the size of M-class. Flares are measured by the amount of x-rays arriving at the GOES satellite. With the solar flare browser, you can see the current x-ray count, and you can look at the profile of previous flares.

  • Date: May 5, 2015
  • Start Time: 22:04 PM UTC
  • Time at Peak: 22:11 PM UTC
  • End Time: 22:14 PM UTC
  • Duration: 10 Minutes
  • Flare Class: X-Class
  • Max Flux: X2.74
  • Background Flux: C1.18
  • End Flare Flux Threshold: X1.3759
  • Start To Peak Growth: 232.2x
  • Flux Growth Rate: 117.762
  • Flux Decay Rate: 13.882

Hint: look at the decay rate, the lower it is, the more likely it is that the flare produced a CME – which is what will bring aurora to Earth when it arrives.

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