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.

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December 1999

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1

C1.0
Kp2+

2

C5.3
Kp2+

3

C6.3
Kp4

4

C4.3
G1

5

C3.3
Kp4+

6

C8.4
Kp4+

7

M1.0
Kp4-

8

C4.3
Kp4-

9

C2.2
Kp4-

10

C3.7
Kp3+

11

C2.8
Kp3+

12

B8.3
Kp4-

13

C1.1
G2

14

C1.1
Kp1+

15

C2.5
Kp3

16

C3.5
Kp2

17

M1.0
Kp3-

18

M1.5
Kp3-

19

C5.6
Kp2

20

C4.8
Kp2-

21

M1.1
Kp1

22

M5.3
Kp0+

23

C3.7
Kp2-

24

C8.4
Kp4

25

C6.2
Kp3+

26

C3.3
Kp2-

27

M2.0
Kp3+

28

M4.5
Kp3+

29

C8.8
Kp3+

30

C2.4
Kp4+

31

C2.7
G2
  
       

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:245
Current stretch spotless days:18

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*since 1994

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