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 2019

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Sun.
  

1

Kp4

2

Kp3+

3

C1.36
Kp3-

4

C2.95
Kp3-

5

C1.34
Kp1+

6

M1.41
Kp2-

7

C1.93
Kp2

8

B1.83
Kp1

9

C9.66
Kp2+

10

B2.29
Kp3

11

Kp5

12

B4.44
Kp2-

13

B4.16
Kp3-

14

Kp6+

15

C2.83
Kp2+

16

B1.17
Kp3

17

Kp2+

18

Kp2

19

Kp2-

20

Kp3+

21

Kp2-

22

Kp2-

23

B1
Kp2-

24

Kp2-

25

Kp2-

26

Kp3

27

Kp3+

28

Kp3

29

Kp4-

30

A1.43
Kp3

31

Kp2-
  
       

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

Nuuk
Tórshavn
Oulu, Rovaniemi, Sodankylä, Utsjoki
Reykjavik
Kirkenes, Tromsø, Trondheim
Murmansk, Vorkuta
Kiruna, Luleå, Umeå
The strength of the interplanetary magnetic field is moderate (11.13nT), the direction is North (6.22nT).
The maximum X-ray flux of the past two hours is:
C5.09

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Latest alerts

X2.0 solar flare from sunspot region 4001

It has been 53 long days but we have finaly seen another X-class solar flare coming from the Sun today. Sunspot region 3947 produced an X1.8 solar flare on 4th of January and since that day... silence... but today departing sunspot region 4001 produced an X2.0 solar flare.

alert

Read more
19:48 UTC - Solar flare

Major X2.03 flare from sunspot region 3991

alert


19:33 UTC - Radio Blackout

Strong R3 radio blackout in progress (≥X1 - current: X2.03)


19:27 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M2.22)


16:54 UTC - Solar flare

Moderate M1.04 flare from sunspot region 3990

alert


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Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/02/23M1.0
Last geomagnetic storm2025/02/19Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
January 2025137 -17.5
February 2025154.3 +17.3
Last 30 days150.6 -11.5

This day in history*

Solar flares
12025X2.0
22025M4.9
32024M2.6
42014M1.62
52025M1.6
DstG
11988-97G2
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31990-82G1
41973-75G2
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*since 1994

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