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 1999

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1

B4.7
Kp4+

2

M1.1
Kp3+

3

M4.3
Kp4-

4

M5.4
Kp4

5

C3.3
Kp3+

6

C3.5
Kp4

7

C1.3
Kp4-

8

M1.1
Kp4

9

C1.7
Kp2+

10

C1.5
Kp4-

11

C2.7
Kp3

12

C1.2
Kp4-

13

C1.9
Kp1+

14

Kp3

15

C1.1
Kp1+

16

B5.4
G1

17

B6.0
G3

18

B7.6
Kp3-

19

B8.0
Kp4-

20

B9.7
Kp4+

21

C1.7
Kp4+

22

C4.5
Kp2-

23

B6.3
Kp2-

24

B3.4
Kp2+

25

B5.9
Kp2+

26

B3.4
Kp2+

27

C1.3
Kp4+

28

C3.8
G1

29

M1.1
G1

30

C8.2
Kp4+
  
       

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/05/14Kp7 (G3)
Number of spotless days in 2019:76
Current stretch spotless days:3

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