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Today 5 years ago: X5.4 solar flare

Blast from the past! Do you remember these solar flares? It is today exactly five years ago that sunspot region 11429 erupted with a X5.4 solar flare. This spectacular blast was closely followed by an X1.3 solar flare from nearby sunspot region 11430.

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Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.4
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
Last 30 days128.1 -22.5

This day in history*

Solar flares
12001M7.89
22017M6.34
32001M5.75
42025M5.6
52024M3.9
DstG
11960-327G4
22001-228G2
31976-218G4
41973-211G4
51989-93G2
*since 1994

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