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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April 2002

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1

C4.79
Kp4+

2

M1.35
Kp4+

3

C4.6
Kp4

4

M8.82
Kp2

5

C7.08
Kp1+

6

M1.37
Kp1+

7

M1.38
Kp3

8

C8.84
Kp1-

9

M3.12
Kp1

10

X1.17
Kp3-

11

M1.42
Kp4

12

M5.79
Kp4+

13

C5.15
Kp4-

14

M2.07
Kp4+

15

M5.32
Kp2+

16

M3.66
Kp3-

17

M3.79
Kp7+
S1

18

M1.35
Kp7
S1

19

C4.88
Kp7-

20

C5.91
Kp7+

21

X2.2
Kp2+
S3

22

M1.1
Kp4
S3

23

C2.67
Kp6
S2

24

M2.5
Kp3+
S2

25

C4.11
Kp2
S1

26

C3.01
Kp1+
S1

27

C5.84
Kp3+

28

C1.97
Kp5-

29

C6.87
Kp3

30

M1.95
Kp3-
     
       

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

Reykjavik

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

Tórshavn
Oulu, Rovaniemi, Kuopio, Sodankylä, Utsjoki
Kirkenes, Tromsø, Trondheim
Arkhangelsk, Murmansk, Vorkuta
Kiruna, Luleå, Sundsvall, Umeå
The Disturbance Storm Time index predicts moderate storm conditions right now (-61nT)

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Latest alerts

Strong G3 geomagnetic storm watch for 23 March

Yesterday around 16 UTC an M1.2 solar flare took place around sunspot region 4028. The solar flare triggered a filament eruption which erupted from the center of the earth-facing solar disk.

alert

Read more
12:18 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 75GW at 13:10 UTC


03:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 03:35 UTC

alert


03:15 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 02:59 UTC

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01:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:36 UTC

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Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/21M1.2
Last geomagnetic storm2025/03/21Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025140.3 -14.3
Last 30 days141.7 -9.5

This day in history*

Solar flares
12000X1.56
22024M4.3
32000M2.86
42002M2.37
52001M2.28
DstG
11990-104G1
21989-96G2
31958-85G2
41979-81G3
51973-57G2
*since 1994

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