Solar Cycle 24 - Top Solar Radiation Storms Help

On this page you will find an overview of the strongest solar radiation storms from Solar Cycle 24 together with links to more information in our archive.

S-scale Peak intensity
12012/03/08S3 - Strong6529.8
22012/01/24S3 - Strong6314.1
32012/01/23S3 - Strong3626.7
42012/03/07S3 - Strong1735.5
52017/09/11S3 - Strong1490
62012/03/09S3 - Strong1489.5
72013/05/23S3 - Strong1196.9
82015/06/22S3 - Strong1070
92017/09/10S3 - Strong1040
102014/01/09S3 - Strong1026.1
112014/01/08S3 - Strong1019.9
122012/01/25S2 - Moderate949.65
132017/09/08S2 - Moderate844
142017/09/12S2 - Moderate800
152012/01/28S2 - Moderate795.55
162017/09/07S2 - Moderate657
172012/01/27S2 - Moderate605.78
182013/05/22S2 - Moderate513.58
192012/03/13S2 - Moderate468.77
202012/03/14S2 - Moderate277.16
212012/05/17S2 - Moderate255.44
222012/01/29S2 - Moderate250.38
232012/03/10S2 - Moderate233.65
242014/01/07S2 - Moderate218.85
252017/09/05S2 - Moderate210
Currently there's no noteworthy space weather

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Active geomagnetic conditions (Kp4) Threshold Reached: 05:32 UTC

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Tuesday, 7 October 2025
22:00 UTC - Type II Radio Emission

Begin Time: 07/10/2025 20:07 UTC Estimated Velocity: 755km/sec.


15:00 UTC - Geomagnetic activity

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Space weather facts

Last X-flare2025/06/19X1.9
Last M-flare2025/10/03M1.2
Last geomagnetic storm2025/10/03Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
September 2025129.8 -3.7
October 2025140.1 +10.3
Last 30 days132.5 +1.1

This day in history*

Solar flares
12012M3.35
22024M1.2
31999C9.19
42024C8.0
52023C6.6
DstG
12024-153G3
21960-112G1
32002-108G2
42012-99G2
52015-97G2
*since 1994

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