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 2015

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1

C2.3
Kp2

2

B8.8
Kp3

3

C2.2
Kp3

4

C8.0
Kp3-

5

X2.7
Kp2+

6

M1.9
G1

7

C5.0
Kp2+

8

C5.5
Kp3-

9

C7.4
Kp3-

10

C2.4
Kp4-

11

C2.5
Kp4-

12

C3.0
Kp3+

13

C9.2
G2

14

C4.8
Kp3

15

C2.5
Kp2+

16

Kp2-

17

B9.1
Kp2

18

C1.1
G1

19

C2.3
G1

20

C1.6
Kp3-

21

C1.1
Kp1

22

C2.0
Kp1+

23

C2.3
Kp1+

24

Kp2-

25

B7.4
Kp1-

26

B5.2
Kp2+

27

C1.3
Kp2+

28

B3.4
Kp2+

29

Kp2

30

B6.5
Kp2

31

B3.9
Kp2-
       

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/07/10Kp5 (G1)
Number of spotless days in 2019:130
Current stretch spotless days:12

This day in history*

Solar flares
12012M7.7
22000M6.4
31999M5.8
42001M1.8
52000C6.7
ApG
1200330G2
2201315
3201115
4200014
5199411
*since 1994

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