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 2016

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1

C2.5
Kp4

2

C3.5
G2

3

B7.5
Kp3+

4

C1.7
Kp2-

5

B4.1
Kp2+

6

B5.3
Kp4+

7

C1.9
Kp4-

8

B5.3
G2

9

B9.4
G2

10

Kp4-

11

B8.2
Kp3-

12

B5.3
Kp1

13

B7.4
Kp2+

14

C7.4
Kp3+

15

C4.9
Kp4-

16

C1.8
Kp3+

17

C1.2
Kp3+

18

B5.1
Kp3-

19

Kp3-

20

B4.4
Kp2+

21

C1.0
G1

22

B5.9
Kp3-

23

B6.9
Kp2-

24

C1.3
Kp2+

25

B9.3
Kp1

26

C1.1
Kp1+

27

B4.6
Kp3

28

B3.3
Kp4

29

B7.2
Kp3

30

C1.4
Kp4

31

B2.9
Kp4-
     

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Space weather facts

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 2019:240
Current stretch spotless days:14

This day in history*

Solar flares
12014M5.7
21999M3.8
31999M3.0
41999M2.3
51999M2.0
ApG
1200341G1
2201420
3201714
4199914
5201512
*since 1994

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