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May 2024 solar storms: X1.2(X1.3)-class flares [93] and X4.5-class flare. [94] The flares with a magnitude of 6–7 occurred between 30 April and 4 May 2024. On 5 May the strength of the solar storm reached 5 points, which is considered strong according to the K-index. The rapidly growing sunspot AR3663 became the most active spot of the 25th ...
The Carrington Event was the most intense geomagnetic storm in recorded history, peaking on 1–2 September 1859 during solar cycle 10.It created strong auroral displays that were reported globally and caused sparking and even fires in telegraph stations. [1]
A solar flare is a relatively intense, localized emission of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other eruptive solar phenomena. The occurrence of solar flares varies with the 11-year solar cycle.
The solar storms of May 2024 (also known as 2024 Mother's Day solar storm [1] or Gannon storm in memory of Jennifer Gannon, [2] a space weather physicist [3]) were a series of powerful solar storms with extreme solar flares and geomagnetic storm components that occurred from 10–13 May 2024 during solar cycle 25.
The solar storms of August 1972 were a historically powerful series of solar storms with intense to extreme solar flare, solar particle event, and geomagnetic storm components in early August 1972, during solar cycle 20. The storm caused widespread electric- and communication-grid disturbances through large portions of North America as well as ...
On 22 February, region 3590 produced a solar flare measuring X6.3. [58] In May, the strongest solar storm in 20 years produced aurorae at far lower latitudes than usual. A few days later, on 14 May, region 3664 produced the strongest solar flare up to that point of the solar cycle, measuring X8.7. [59] [60]
Solar Cycles Start (Maximum) Spotless days [10] Solar cycle 10–11 1860 – Feb 406 Solar cycle 11–12 1870 – Aug 1028 Solar cycle 12–13 1883 – Dec 736 Solar cycle 13–14 1894 – Jan 934 Solar cycle 14–15 1906 – Feb 1023 Solar cycle 15–16 1917 – Aug 534 Solar cycle 16–17 1928 – Apr 568 Solar cycle 17–18 1937 – Apr 269
For first time in two years (since December 2010), no X or M-class flares were emitted by the Sun's Earth-facing side (the strongest flare was merely a C4.1). The observed sunspots were 40.8 and the 10.7 cm radio flux value was 108.4, the lowest in ten months. [78] 2012 ended up with 129 M-class and 7 X-class solar flares. [53]