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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December 2004

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1

M1.1
Kp4

2

M1.5
Kp2-

3

B8.0
Kp1

4

B4.9
Kp0

5

B3.1
Kp4+

6

B2.2
Kp4+

7

Kp4-

8

C2.5
Kp3+

9

C1.1
Kp3-

10

B1.2
Kp3

11

B5.8
Kp4+

12

B3.4
G1

13

B3.1
Kp4+

14

B3.0
Kp2+

15

B6.2
Kp2+

16

B3.8
Kp4

17

B3.9
Kp4

18

B4.0
Kp4+

19

C1.8
Kp1+

20

B3.9
Kp2+

21

B9.1
Kp4+

22

C2.3
Kp4+

23

C5.1
Kp2+

24

C1.8
Kp2

25

Kp4

26

B9.9
Kp3

27

B4.7
Kp3-

28

C7.2
G1

29

M2.3
Kp4+

30

M4.2
G1

31

M1.2
Kp3-
  
       

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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
2020149 days (77%)
Current stretch3 days

This day in history*

Solar flares
12004M6.7
22004M6.2
32004M5.4
42005M5.0
52005M3.2
ApG
1200042G3
2201533G2
3200531G1
4200414
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*since 1994

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