Solar Flare M4
Taken by Rob Stammes on April 30, 2022 @
Polarlightcenter observatory Norway
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Details:
Today a very good visible M4 Solar flare on my radio instruments.Radio noise variation on the VHF and a signal strength (negative)variation on VLF.
A sudden ionospheric disturbance or SID.
Photographer's website:
https://polarlightcenter.com
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