These charts on this page resemble the progress of the solar cycle. The charts are updated every month by the SWPC with the latest ISES predictions. Observed values are initially temporary values that are replaced with the final data once it is available. All the graphs on this page can be exported as JPG, PNG, PDF or SVG files. Every dataset can be toggled on or off by clicking on the corresponding description under each graph.
The graph below shows us the number of C, M and X-class solar flares that occur for any given year. It gives us a nice idea of the amount of solar flares in relation to the sunspot number. It is thus another way of seeing how a solar cycle evolved over time. This data comes from the NOAA SWPC and is updated daily.
The graph below shows you the number of C, M and X-class solar flares that were produced during past month together with the sunspot number of each day. This gives you an idea of the solar activity during the past month. This data comes from the NOAA SWPC and is updated daily.
During periods of low solar activity, the Sun can be devoid of any sunspots and thus be spotless. This is a frequent occurrence in the years around and during solar minimum. The graph below shows how many days during a specific year that the earth-facing side of the Sun had no sunspots.
The graph below shows the number of days with a geomagnetic storm per year and how strong those storms were. This will give you an idea in which years there were a lot of geomagnetic storms.
|Predicted Kp max||3|
|M-class solar flare||1%|
|X-class solar flare||1%|
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|Last geomagnetic storm:||2017/11/21||Kp5 (G1)|
|Number of spotless days in 2017:||85|
|Current stretch spotless days:||6|