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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May 1999

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1

C3.0
Kp4

2

C7.5
Kp3+

3

M4.4
Kp3

4

C2.8
Kp1+

5

C1.4
Kp3

6

C3.3
Kp3-

7

M3.2
Kp3-

8

M4.6
Kp2-

9

M7.6
Kp2-

10

M2.5
Kp2

11

C4.7
Kp0+

12

C2.2
Kp3+

13

B8.2
G1

14

C1.6
Kp3

15

B6.8
Kp2

16

M1.2
Kp1+

17

M2.3
Kp1

18

C9.0
G1

19

C1.2
Kp3

20

C2.3
Kp3-

21

C2.4
Kp3-

22

C1.4
Kp1+

23

C3.4
Kp3+

24

C3.3
Kp4

25

C2.5
Kp4

26

M1.2
Kp2+

27

C7.4
Kp3

28

C2.3
Kp2+

29

M1.6
Kp2-

30

C8.7
Kp2+

31

C4.8
Kp1+
      

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:38
Current stretch spotless days:24

This day in history*

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*since 1994

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