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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April 2004

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1

C1.4
Kp2-

2

B4.6
Kp2-

3

B7.2
G2

4

C3.0
G2

5

M1.7
G2

6

M2.4
G1

7

Kp3+

8

C7.4
Kp4-

9

C2.8
G1

10

B4.5
Kp4-

11

C9.6
Kp4-

12

C2.3
Kp4-

13

B2.1
Kp2+

14

B9.1
Kp2+

15

M1.2
Kp3+

16

B8.6
Kp4-

17

C1.8
Kp3-

18

B9.1
Kp3-

19

C4.7
Kp3-

20

B5.8
Kp2

21

C2.1
Kp3

22

M1.2
Kp2-

23

M1.5
Kp4

24

C2.9
Kp4+

25

M2.2
Kp4-

26

C2.4
Kp2+

27

C3.1
Kp2-

28

B4.1
Kp4-

29

B1.9
Kp2

30

C1.7
G1
  
       

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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 2019:241
Current stretch spotless days:14

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*since 1994

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