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 2017

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1

M4.4
Kp4+

2

M5.7
Kp3

3

M5.8
Kp2

4

C4.9
G1

5

C1.1
Kp3+

6

C5.5
Kp3

7

C4.3
Kp3+

8

C1.2
Kp4+

9

B1.8
G1

10

B4.8
Kp2+

11

B3.9
Kp4-

12

B2.1
Kp3

13

Kp2+

14

B1.2
Kp3+

15

Kp3+

16

B4.0
Kp1+

17

C2.0
Kp1+

18

C5.5
Kp3

19

B7.2
Kp4+

20

B8.0
G2

21

B6.2
G1

22

B9.6
G2

23

B3.7
G1

24

B2.6
Kp4

25

B7.2
Kp3

26

B4.5
Kp3-

27

Kp2+

28

B1.3
Kp2+

29

Kp2

30

B3.0
Kp2
       

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64%

Space weather facts

Last X-flare2017/09/10X8.2
Last M-flare2020/05/29M1.1
Last geomagnetic storm2020/04/20Kp5 (G1)
Spotless days
Last 365 days308 days
2020151 days (77%)
Current stretch5 days

This day in history*

Solar flares
12002X3.0
22004X1.8
32004X1.6
42002M1.8
52000M1.3
ApG
12000164G5
2201278G3
3200328G1
4201324G1
5199421G1
*since 1994

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