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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Sun.
  

1

M1.9
Kp4-

2

M2.7
Kp7-

3

X1.6
Kp4

4

M9.13
Kp3

5

X1.32
Kp4+

6

X4.52
Kp5+

7

M8.29
Kp3-

8

X1.02
Kp2

9

X2.2
Kp2+

10

X3.98
Kp9-
S2

11

X5.89
Kp9
S2

12

X1.02
Kp7
S1

13

M6.6
Kp6
S1

14

X8.79
Kp2+
S2

15

X3.48
Kp3
S1

16

M1
Kp6
S1

17

M7.25
Kp6

18

C7.1
Kp4

19

M2.5
Kp3-

20

C6.6
Kp2+

21

M1.9
Kp3-

22

M2.32
Kp2-

23

M4.23
Kp3+

24

M1.4
Kp3

25

C5.8
Kp2+

26

C7.4
Kp3-

27

X2.9
Kp3

28

C8.9
Kp2

29

X1.45
Kp2+

30

M1
Kp3+

31

X1.18
Kp4+
  
       

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

Fairbanks, AK
The solar wind speed is currently moderately high (624.4 km/sec.)

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Latest alerts

Monday, 21 April 2025
20:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:33 UTC

alert


18:57 UTC - Solar flare

Moderate M1.99 flare

alert


18:39 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.93)


14:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 13:52 UTC

alert


12:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 11:42 UTC

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/21M1.9
Last geomagnetic storm2025/04/21Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025120 -14.2
Last 30 days111.9 -31

This day in history*

Solar flares
12001M4.66
22022M3.4
32024M2.81
42011M2.64
52004M1.78
DstG
11970-137G3
21988-109G1
32001-102G2
41979-99G2
51997-93G1
*since 1994

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