The aurora and solar activity archive

Searching for historical solar and auroral activity data? The archive is filled with data between the year 1996 and yesterday. You can choose a viewing mode to quickly look for days with interesting space weather and pick a day to view the archived data for that day with more detailed space weather data.

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October 2011

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1

M1.83
Kp5-

2

M5.64
Kp4-

3

M1.09
Kp2

4

M1.05
Kp2+

5

M1.33
Kp4+

6

C2.75
Kp3-

7

C3.81
Kp2

8

C1.6
Kp4-

9

C2.43
Kp3+

10

C6.44
Kp2-

11

C1.57
Kp2-

12

C7.7
Kp2+

13

C3.23
Kp2+

14

C2.2
Kp1-

15

C7.25
Kp3+

16

C9.07
Kp3-

17

C3.07
Kp3-

18

C2.86
Kp2-

19

C7.88
Kp2+

20

M2.35
Kp2+

21

M1.87
Kp2+

22

M1.89
Kp1-

23

C3.62
Kp1
S1

24

Kp7

25

C2.56
Kp7+

26

C1.71
Kp1+

27

C3.71
Kp2

28

C2.45
Kp0+

29

C4.36
Kp0+

30

C3.53
Kp3

31

M2.04
Kp4-
      

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Space weather facts

Last X-flare2025/12/01X1.9
Last M-flare2025/12/04M6.0
Last geomagnetic storm2025/12/04Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 202591.8 -22.8
December 2025186 +94.2
Last 30 days106.3 +12.6

This day in history*

Solar flares
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32024M2.5
42014M2.22
52023M1.5
DstG
11958-176G3
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*since 1994

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