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 2018

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1

B9.0
Kp1+

2

Kp2-

3

B2.1
Kp2

4

Kp2-

5

Kp3

6

A1.1
Kp2-

7

Kp2

8

Kp2+

9

Kp4+

10

Kp4

11

Kp4+

12

A9.5
Kp3

13

Kp4-

14

B2.4
Kp2

15

B3.5
Kp2+

16

Kp1

17

Kp1

18

B4.0
Kp2

19

Kp1

20

B5.3
G2

21

B2.0
Kp3+

22

Kp2-

23

B1.0
Kp3

24

B2.1
Kp2

25

Kp2

26

Kp2-

27

Kp3-

28

B1.5
Kp2-

29

Kp1+

30

B1.1
Kp2+
      

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/06/08Kp5 (G1)
Number of spotless days in 2019:110
Last spotless day:2019/06/23

This day in history*

Solar flares
12015M7.9
22000M2.5
32000M1.9
42000C7.7
51998C6.5
ApG
1201532G2
2200316
3199516G1
4201812G1
5200511
*since 1994

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