Historical solar cycles

The chart on this page shows the sunspot numbers since 1749. That's when the extensive recording of solar sunspot activity began. You can zoom in on this plot by selecting a time period that you wish to view. Every dataset can be toggled on or off by clicking on the corresponding description under each graph and it can be exported as a JPG, PNG, PDF or SVG file.

Current data suggest that it is not possible to see aurora now at middle latitudes
The density of the solar wind is moderate (20.06 p/cm3)

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/09/22Kp5 (G1)
Number of spotless days in 2018:152
Current stretch spotless days:13

This day in history*

Solar flares
12001M7.6
22011M7.4
32011M4.4
42011M3.7
52000M3.4
ApG
11998117G4
2200133G3
3200328
4201622
5200019
*since 1994

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