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. You can choose a viewing mode to quickly look for days with interesting space weather and pick a day to view the archived data for that day with more detailed space weather data.

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May 2021

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Monday
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Friday
Fri.
Saturday
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Sun.
     

1

B1.7
Kp2

2

Kp3

3

Kp2

4

B1.7
Kp1+

5

B1.2
Kp1-

6

B3.5
Kp1+

7

M3.9
Kp1

8

C8.7
Kp1+

9

C4
Kp1+

10

B1.9
Kp2

11

B3.5
Kp2-

12

C1.5
Kp7

13

B3.5
Kp2

14

B4.9
Kp2

15

Kp3+

16

Kp2-

17

B4.2
Kp2

18

C1
Kp4-

19

B1.3
Kp2+

20

B1.3
Kp5+

21

C4.8
Kp2+

22

M1.4
Kp2

23

M1.2
Kp1+

24

B4.6
Kp1+

25

B5.2
Kp1+

26

C3.9
Kp5-

27

C7.6
Kp4+

28

C9.5
Kp1-

29

C1.7
Kp2+
S1

30

B3.6
Kp2+

31

B7.8
Kp1-
      

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Gillam, MB, Whitehorse, YT, Yellowknife, NT
Fairbanks, AK

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02:09 UTC - Solar flare

Moderate M1.54 flare from sunspot region 4048

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Minor R1 radio blackout in progress (≥M1 - current: M1.24)


Saturday, 29 March 2025
23:21 UTC - Solar flare

Moderate M1.91 flare from sunspot region 4048

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22:51 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.1)


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Moderate M1.45 flare from sunspot region 4048

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/03/30M1.5
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025127.5 -27.1
Last 30 days127.5 -24.7

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